Take Assessment - ERouting Chapter 5 - CCNA Exploration: Routing Protocols and Concepts (Version 4.0)
1
Refer to the exhibit. The network that is shown is running RIPv1. The 192.168.10.0/24 network was recently added and will only contain end users. What command or set of commands should be entered on Router1 to prevent RIPv1 updates from being sent to the end user devices on the new network while still allowing this new network to be advertised to other routers?
o Router1(config-router)# no router rip Router1(config-router)# network 192.168.10.0
o Router1(config-router)# no network 192.168.10.0
o Router1(config-router)# passive-interface fastethernet 0/0
o Router1(config-router)# passive-interface serial 0/0/0
2
Refer to the output from the show ip route command. What can be concluded from the output of this router command?
o A preferred route to the destination has not been set.
o There are two equal cost paths to network 1.0.0.0.
o Both interfaces are being used equally to route traffic.
o A variance must be set to load-balance across multiple paths.
3
Refer to the exhibit. The Ethernet interface on Router2 goes down and the administrator notices that the route is still in the Router1 routing table. How much longer will Router1 keep the down network in its routing table before marking it as possibly down?
o 30 seconds
o 90 seconds
o 155 seconds
o 180 seconds
o 255 seconds
4
What is the default update period in seconds for the RIP routing protocol?
o 10
o 12
o 15
o 20
o 30
o 60
5
Which of the following is considered a limitation of RIP v1?
o RIP v1 does not send subnet mask information in its updates.
o RIP v1 is not widely supported by networking hardware vendors.
o RIP v1 consumes excessive bandwidth by multicasting routing updates using a Class D address.
o RIP v1 requires enhanced router processors and extra RAM to function effectively.
o RIP v1 does not support load balancing across equal-cost paths.
o RIP v1 authentication is complicated and time-consuming to configure.
6
Which command will display RIP activity as it occurs on a router?
o debug ip rip
o show ip route
o show ip interface
o show ip protocols
o debug ip rip config
o show ip rip database
7
What are three characteristics of the RIPv1 routing protocol? (Choose three.)
o supports the use of VLSM
o uses hop count as a metric
o considers a metric of 16 as infinity
o has an administrative distance of 110 by default
o includes the destination IP address and subnet mask in routing updates
o calculates metrics using the Bellman Ford algorithm
8
Which of the following would be the correct command sequence to enable RIP on Router B for all connected networks?
o RouterB# router rip
RouterB(router)# network 210.36.7.0
RouterB(router)# network 220.17.29.0
RouterB(router)# network 211.168.74.0
o RouterB(config)# router rip
RouterB(config-router)# network 198.16.4.0
RouterB(config-router)# network 211.168.74.0
RouterB(config-router)# network 199.84.32.0
o RouterB(config)# configure router rip
RouterB(config-router)# network 210.36.7.0
RouterB(config-router)# network 199.84.32.0
RouterB(config-router)# network 211.168.74.0
o RouterB(config)# router rip
RouterB(config-router)# network 198.16.4.0
RouterB(config-router)# network 210.36.7.0
RouterB(config-router)# network 211.168.74.0
o RouterB(config)# router rip
RouterB(config-router)# network 198.16.4.0
RouterB(config-router)# network 210.36.7.0
RouterB(config-router)# network 220.17.29.0
9
Refer to the exhibit. All routers are configured with valid interface addresses in the indicated networks and are running RIPv1. The network is converged. Which routes are present in the routing tables?
o All routers have all routes in their routing table.
o All routers have all /30 routes, but do not have /24 routes in their routing table.
o All routers have all /30 routes. Routers A and E also have some of the /24 routes in their routing table.
o All routers have all /30 routes. Routers B and D also have some of the /24 routes in their routing table.
o Routers A and E have all routes. Routers B and D have only /30 routes in their routing table.
o Routers A and E have only /24 routes. Routers B and D have only /30 routes in their routing table.
10
What will happen if an interface IP address is entered for the address portion of the network command in a RIPv1 configuration instead of a network address?
o The router will reject the command.
o A route to the host address will be added to outgoing RIP updates.
o A route to the host address will be added to the routing table.
o All interfaces in the same classful network as the configured address will be included in the RIPv1 routing process.
11
Refer to the exhibit. Router1 and Router2 are running the RIPv1 protocol. The network administrator configures the command network 10.1.0.0 on Router1. What network will Router1 advertise to Router2?
o 10.1.0.0/16
o 10.1.0.0/8
o 10.0.0.0/16
o 10.0.0.0/8
12
Refer to the exhibit. All routers in the exhibit are running RIP v1. The network administrator issues the show ip route command on router A. What routes would appear in the routing table output if the network is converged? (Choose two).
o R 192.168.2.0/24 [120/1]
o C 192.168.2.0/24 [120/1]
o R 10.10.3.0/24 [120/0]
o C 10.10.3.0/24 [120/1]
o R 10.10.1.0/24 [120/2]
o R 10.10.1.0/24 [120/3]
13
Refer to the exhibit. A network consists of multiple routers. What can be verified when the show ip protocols command is issued on one of the routers in the network?
o whether all routes in the network have been properly added to the routing table
o routing protocol configuration in use for IP on this router
o operational status of routing protocols in use on all routers in the network
o routing metric of each network that is listed in the routing table
14
Refer to the exhibit. What can be concluded from the routing table output of router B?
o A static default route has been configured on B.
o The default-information originate command has been entered on A.
o All traffic that is destined for 192.168.1.1 will be sent to address 0.0.0.0.
o Hosts on the 10.16.1.0/27 network have 192.168.1.1 configured as the default gateway address.
15
The following line was displayed in the output of the show ip route command. R 192.168.3.0/24 [120/3] via 192.168.2.2, 00:00:30, Serial0/0 What is the value of the routing metric?
o 3
o 12
o 20
o 30
o 120
16
Refer to the exhibit. All routers that are shown are running the RIP routing protocol. All unknown IP traffic must be forwarded to the ISP. What router or set of routers are recommended to have both a default route and the default-information originatecommand issued to implement this forwarding policy?
o only Router1
o only the gateway router
o all routers in the network
o only the routers with LANs needing Internet access
17
Refer to the exhibit. Router1 is running RIPv1. What command was entered into Router1 to configure the gateway of last resort?
o no auto-summary
o ip default-network 0.0.0.0
o ip default-gateway 10.0.0.0
o ip route 0.0.0.0 0.0.0.0 S0/0/1
18
Which command or set of commands will stop the RIP routing process?
o RouterB(config)# router rip RouterB(config-router)# shutdown
o RouterB(config)# router rip RouterB(config-router)# network no 192.168.2.0
o RouterB(config)# no router rip
o RouterB(config)# router no rip
19
Which two statements are true regarding the characteristics of RIPv1? (Choose two).
o It is a distance vector routing protocol.
o It advertises the address and subnet mask for routes in routing updates.
o The data portion of a RIP message is encapsulated into a TCP segment.
o The data portion of a RIP message is encapsulated into a UDP segment.
o It broadcasts updates every 15 seconds.
o It allows a maximum of 15 routers in the routing domain.
CCNA 2 Versi 4 Chapter 4
Take Assessment - ERouting Chapter 4 - CCNA Exploration: Routing Protocols and Concepts (Version 4.0)
1
What actions will occur after RouterA loses connectivity to network 114.125.16.0? (Choose two.)
o RouterB will include network 123.92.76.0 and 136.125.85.0 in its update to RouterA.**
o During the next update interval, RouterB will send a RIP update out both ports that includes the inaccessible network.
o During the next update interval, RouterC will send an update to RouterB stating that network 114.125.16.0 is accessible in 2 hops.
o Router C will learn of the loss of connectivity to network 114.125.16.0 from RouterB.**
o RouterB will include network 123.92.76.0 and 136.125.85.0 in its update to RouterC.
2
What does a router running RIP do first with a new route that is received from an advertisement?
o places it immediately in the routing table
o adjusts the metric for the new route to show the added distance for the route**
o advertises this route out all other interfaces except the one that it came in on
o sends a ping packet to verify that the path is a feasible route
3
Refer to the exhibit. If all routers are using RIP, how many rounds of updates will occur before all routers know all networks?
o 1
o 2
o 3**
o 4
o 5
o 6
4
Which of the following methods does split horizon use to reduce incorrect routing information?
o Routing updates are split in half to reduce the update time.
o Information learned from one source is not distributed back to that source.**
o New route information must be learned from multiple sources to be accepted.
o The time between updates is split in half to speed convergence.
o New route information is suppressed until the system has converged.
5
Refer to the exhibit. The routers in this network are running RIP. Router A has not received an update from Router B in over three minutes. How will Router A respond?
o The Holddown timer will wait to remove the route from the table for 60 seconds.
o The Invalid timer will mark the route as unusable if an update has not been received in 180 seconds**.
o The Update timer will request an update for routes that were learned from Router B.
o The Hello timer will expire after 10 seconds and the route will be flushed out of the routing table.
6
The graphic shows a network that is configured to use RIP routing protocol. Router2 detects that the link to Router1 has gone down. It then advertises the network for this link with a hop count metric of 16. Which routing loop prevention mechanism is in effect?
o split horizon
o error condition
o hold-down timer
o route poisoning**
o count to infinity
7
Which two statements describe EIGRP? (Choose two.)
o EIGRP can be used with Cisco and non-Cisco routers.
o EIGRP sends triggered updates whenever there is a change in topology that influences the routing information.**
o EIGRP has an infinite metric of 16.
o EIGRP sends a partial routing table update, which includes just routes that have been changed.
o EIGRP broadcasts its updates to all routers in the network.**
8
Which event will cause a triggered update?
o an update routing timer expires
o a corrupt update message is received
o a route is installed in the routing table**
o the network is converged
9
Which of the following statements are correct about RIP?
o uses a broadcast to update all other routers in the network every 60 seconds
o uses a multicast address to update other routers every 90 seconds
o will send out an update if there is a failure of a link**
o updates only contain information about routes that have changed since last update
10
Which two statements are true regarding the function of the RIPv1 routing updates? (Choose two).
o updates are broadcast only when there are changes to the topology
o updates are broadcast at regular intervals**
o broadcast are sent to 0.0.0.0
o broadcasts are sent to 255.255.255.255**
o updates contain the entire network topology
o only changes are included in the updates
11
A network administrator is evaluating RIP versus EIGRP for a new network. The network will be sensitive to congestion and must respond quickly to topology changes. What are two good reasons to choose EIGRP instead of RIP in this case? (Choose two.)
o EIGRP uses periodic updates.
o EIGRP only updates affected neighbors.**
o EIGRP uses broadcast updates.
o EIGRP updates are partial.**
o EIGRP uses the efficient Bellman-Ford algorithm.
12
Which two conditions are most likely to cause a routing loop? (Choose two.)
o random jitter
o implementation of classful addressing
o inconsistent routing tables**
 |
o a network converging too quickly
13
What metric does the RIP routing protocol consider to be infinity?
o 0
o 15
o 16**
o 224
o 255
14
What does the RIP holddown timer do?
o ensures an invalid route has a metric of 15
o prevents a router from sending any updates after it has introduced a routing loop into the network
o ensures every new route is valid before sending an update
o instructs routers to ignore updates, for a specified time or event, about possible inaccessible routes**
15
Refer to the exhibit. What path will packets from the 192.168.1.0/24 network travel to reach the 10.0.0.0/8 network if RIP is the active routing p
o The path will be router A -> router B -> router C -> router E.
o The path will be router A -> router D -> router E**
o Router A will load balance between the router A -> router D -> router E and router A -> router B -> router C -> router E path
o Packets will alternate paths depending on the order they arrive at router A.
16
Three routers running a distance-vector routing protocol lost all power, including the battery backups. When the routers reload, what will ha
o They will share all routes saved in NVRAM prior to the power loss with their directly connected neighbors.
o They will multicast hello packets to all other routers in the network to establish neighbor adjacencie
o They will send updates that include only directly connected routes to their directly connected neighbor**
o They will broadcast their full routing table to all routers in the networ
17
What is a routing loop
o a packet bouncing back and forth between two loopback interfaces on a route
o a condition where a return path from a destination is different from the outbound path forming a "loop
o a condition where a packet is constantly transmitted within a series of routers without ever reaching its intended destinatio**
o the distribution of routes from one routing protocol into anoth
18
Which statement is true regarding cisco’s RIP_JITTER variable
o It prevents the synchronization of routing updates by buffering the updates as they leave the router interface
o It prevents the synchronization of routing updates by subtracting a random length of time ranging from 0% to 15% of the specified interval time from the next routing upda**
o It prevents the synchronization of routing updates by causing the router to skip every other scheduled update tim
o It prevents the synchronization of routing updates by forcing the router to listen when its time for other updates on the lines before sending it
19
Which three routing protocols are distance vector routing protocols? (Choose three)
o RIPv**
o EIGR**
o OSP
o IS-I
o RIPv**
20
Which of the following can exist in a distance vector network that has not converged? (Choose three)
o routing loop**
o inconsistent traffic forwarding**
o no traffic forwarding until system converge
o inconsistent routing table entrie**
o routing table updates sent to wrong destination
21
What is the purpose of the TTL field in the IP header
o used to mark routes as unreachable in updates sent to other route
o prevents regular update messages from reinstating a route that may have gone ba
o prevents a router from advertising a network through the interface from which the update cam
o limits the time or hops that a packet can traverse through the network before it should be discarde**
o defines a maximum metric value for each distance vector routing protocol by setting a maximum hop cou
Rabu, 2008 Juli 02
CCNA 2 Versi 4 Final Type 2
CCNA2 - Final Exam (Version 2)
1
Refer to the exhibit. The network administrator issues the command no ip classless on Router1. What forwarding action will take place on a packet that is received by Router1 and is destined for host 192.168.0.26?
.****The packet will be dropped
The packet will be forwarded to the gateway of last resort.
The packet will match the 192.168.0.0 network and be forwarded out Serial 0/0.
The packet will most closely match the 192.168.0.8 subnet and be forwarded out Serial 0/1.
2
Which three statements are true of holddown timers? (Choose three.)
used by link state routing protocols to prevent routing loops
***prevent update messages from reinstating a route that may have gone bad
***allow routers to still forward packets to destination networks that are in holddown
limit the number of hops a packet can traverse through the network before it is discarded
prevent a router advertising a network through the same interface from which the network was learned
***permit lower metric updates received from any neighboring router to reinstate the route to a possibly down Network
3
What command would the network administrator apply to a router that is running OSPF to advertise the entire range of addresses included in 172.16.0.0/19 in area 0?
R1(config-router)# network 172.16.0.0 0.0.0.255 area 0
R1(config-router)# network 172.16.0.0 0.0.3.255 area 0
R1(config-router)# network 172.16.0.0 0.0.15.255 area 0
****R1(config-router)# network 172.16.0.0 0.0.31.255 area 0
4
Refer to the exhibit. Hosts on the BOS Fa0/0 LAN are able to ping the Fa0/1 interface on the JAX router and all interfaces on the BOS and ORL routers. Why would hosts from the 10.0.0.0/24 network not be able to ping hosts on the Fa0/0 LAN of the JAX router?
The JAX router has the wrong process ID.
The JAX router needs the network 10.0.0.0 0.0.0.255 area 0 command.
***The JAX router needs the network 192.168.3.0 0.0.0.255 area 0 command.
The BOS router needs the network 192.168.3.0 0.0.0.255 area 0 command.
5
Refer to the exhibit. Which path will traffic from the 172.16.1.0/24 network take to get to the 10.0.0.0/24 network?
ADC
ABC
***It will load balance the traffic between ADC and ABC
It will send the traffic via ABC, and will use ADC as a backup path only when ABC fails.
6
Refer to the exhibit. Pings are failing between HostA and HostB. The network administrator discovers that Router1 does not have a route to the 172.16.0.0 network. Assuming Router2 is configured correctly, which two static routes could be configured on Router1 to enable Host A to reach network 172.16.0.0? (Choose two.)
****ip route 172.16.0.0 255.255.0.0 S0/0
ip route 172.16.0.0 255.255.0.0 S0/1
ip route 172.16.0.0 255.255.0.0 192.168.0.1
****ip route 172.16.0.0 255.255.0.0 192.168.0.2
ip route 192.168.0.1 172.16.0.0 255.255.0.0 S0/0
ip route 192.168.0.1 172.16.0.0 255.255.0.0 S0/1
7
What can be determined from the output shown in the exhibit? (Choose two.)
Annapolis is a 2611 router that is connected to the S0/0 interface of the Montgomery router.
All of the routers are connected to Montgomery through an Ethernet switch.
***Montgomery has Layer 2 connectivity with Cumberland.
Layer 3 connectivity is operational for all of the devices listed in the Device ID column.
An administrator consoled into the Waldorf router can ping the Brant router.
***Brant, Fisherman, and Potomac are directly connected to Montgomery.
8
Refer to the exhibit. R1 knows two routes, Path A and Path B, to the Ethernet network attached to R3. R1 learned Path A to network 10.2.0.0/16 from a static route and Path B to network 10.2.0.0/16 from EIGRP. Which route will R1 install in its routing table?
Both routes are installed and load balancing occurs across both paths.
The route via Path B is installed because the EIGRP route has the best metric to network 10.2.0.0/16.
***The route via Path A is installed because the static route has the best metric to network 10.2.0.0/16.
The route via Path B is installed because the EIGRP route has the lowest administrative distance to network 10.2.0.0/16.
The route via Path A is installed because the static route has the lowest administrative distance to network 10.2.0.0/16.
9
Which two statements are true regarding link-state routing protocols? (Choose two.)
They do not work well in networks that require special heirarchical designs.
***They are aware of the complete network topology.
They pass their entire routing tables to their directly connected neighbors only.
***They offer rapid convergence times in large networks.
They rely on decreasing hop counts to determine the best path.
They do not include subnet masks in their routing updates.
10
A network administrator has configured a default route on Router_A but it is not being shared with adjacent Router_B and the other routers in the OSPF area. Which command will save the administrator the time and trouble of configuring this default route on Router_B and all of the other routers in the OSPF area?
Router_A(config-router)# ospf redistribute default-route
Router_B(config-router)# ospf redistribute default-route
***Router_A(config-router)# default-information originate
Router_B(config-router)# default-information originate
Router_A(config-router)# ip ospf update-default
Router_B(config-router)# ip ospf update-default
11
Refer to the exhibit. What are the effects of the exhibited commands on the router?
All passwords are encrypted.
***Only Telnet sessions are encrypted.
Only the enable password is encrypted.
Only the enable password and Telnet session are encrypted.
Enable and console passwords are encrypted.
12
When presented with multiple valid routes to a destination, what criteria does a router use to determine which routes to add to the routing table?
The router selects the routes with the best metric. All routes that have the same best metric are added to the routing table.
***The router first selects routes with the lowest administrative distance. The resulting routes are then prioritized by metric and the routes with the best metric are added to the routing table.
The router selects the routes with the lowest administrative distance. All routes with the same lowest administrative
The router installs all routes in the routing table but uses the route with the best metric most when load balancing.
13
Which statement is true regarding routing metrics?
All routing protocols use the same metrics.
EIGRP uses bandwidth as its only metric.
***Routers compare metrics to determine the best route.
The larger metric generally represents the better path.
14
A router has learned about a network through static and dynamic routing processes. Which route will be used to reach network 192.168.168.0?
D 192.168.168.0/24 [90/2195456] via 192.168.200.1, 00:00:09, Ethernet0
O 192.168.168.0/24 [110/1012] via 192.168.200.1, 00:00:22, Ethernet0
R 192.168.168.0/24 [120/1] via 192.168.200.1, 00:00:17, Ethernet0
***S 192.168.168.0/24 [1/0] via 192.168.200.1
15
Which three statements are true regarding the encapsulation and de-encapsulation of packets when traveling through a router? (Choose three.)
***The router modifies the TTL field, decrementing it by one.
The router changes the source IP to the IP of the exit interface.
***The router maintains the same source and destination IP.
***The router changes the source physical address to the physical address of the exit interface.
The router changes the destination IP to the IP of the exit interface.
The router sends the packet out all other interfaces, besides the one it entered the router on.
16
When the show cdp neighbors command is issued from Router C, which devices will be displayed in the output?
D, SWH-2
A, B, D
SWH-1, SWH-2
***B, D
SWH-1, A, B
A, B, D, SWH-1, SWH-2
17
Refer to the exhibit. A network administrator is trying to determine why router JAX has no OSPF routes in its routing table. All routers are configured for OSPF area 0. From the JAX router, the administrator is able to ping its connected interfaces and the Fa0/1 interface of the ORL router but no other router interfaces. What is a logical step that the network administrator should take to troubleshoot the problem?
Reboot the routers.
Change the OSPF process ID on all of the routers to 0.
Check to see if the cable is loose between ORL and JAX.
Check to see if CDP packets are passing between the routers.
***Use show and debug commands to determine if hellos are propagating.
18
Using default settings, what is the next step in the router boot sequence after the IOS loads from flash?
Perform the POST routine.
Search for a backup IOS in ROM.
Load the bootstrap program from ROM.
Load the running-config file from RAM.
***Locate and load the startup-config file from NVRAM.
19
Refer to the exhibit. What summary address can Router2 advertise to Router1 to reach the three networks on Routers 3, 4, and 5 without advertising any public address space or overlapping the networks on Router1?
172.16.0.0/8
172.16.0.0/10
***172.16.0.0/13
172.16.0.0/20
172.16.0.0/24
20
The network shown in the diagram is having problems routing traffic. It is suspected that the problem is with the addressing scheme. What is the problem with the addressing used in the topology?
The address assigned to the Ethernet0 interface of Router1 is a broadcast address for that subnetwork.
***The subnetwork configured on the serial link between Router1 and Router2 overlaps with the subnetwork
assigned to Ethernet0 of Router3.
The subnetwork assigned to the Serial0 interface of Router1 is on a different subnetwork from the address for
Serial0 of Router2.
The subnetwork assigned to Ethernet0 of Router2 overlaps with the subnetwork assigned to Ethernet0 of Router3.
21
Refer to the exhibit. A new PC was deployed in the Sales network. It was given the host address of 192.168.10.31 with a default gateway of 192.168.10.17. The PC is not communicating with the network properly. What is the cause?
The address is in the wrong subnet.
192.168.10.31 is the broadcast address for this subnet.
The default gateway is incorrect.
***The host address and default gateway are swapped.
22
Refer to the exhibit. The network is running the RIP routing protocol. Network 10.0.0.0 goes down. Which statement is true regarding how the routers in this topology will respond to this event?
Router4 will learn about the failed route 30 seconds later in the next periodic update.
Split horizon will prevent Router4 from forwarding packets to the 10.0.0.0 network until the holddown
Router5 immediately flushes the unreachable route from its routing table.
***Router5 will send Router4 a triggered update with a metric of 16 for network 10.0.0.0.
23
Refer to the exhibit. Which three statements are true of the routing table for Router1? (Choose three.)
The route to network 172.16.0.0 has an AD of 156160.
Network 192.168.0.16 can best be reached using FastEthernet0/0.
***The AD of EIGRP routes has been manually changed to a value other than the default value.
***Router1 is running both the EIGRP and OSPF routing process.
Network 172.17.0.0 can only be reached using a default route.
***No default route has been configured.
24
Refer to the exhibit. What is the most efficient summarization of the routes attached to router R1?
198.18.0.0/16
***198.18.48.0/21
198.18.32.0/22
198.18.48.0/23
198.18.49.0/23
198.18.52.0/22
25
What is the purpose of the TTL field within an IP packet header?
clears an unreachable route from the routing table after the invalid timer expires
prevents regular update messages from inappropriately reinstating a route that may have gone bad
removes an unreachable route from the routing table after the flush timer expires
***limits the period of time or number of hops a packet can traverse through the network before it should be
discarded
used to mark the route as unreachable in a routing update that is sent to other routers
26
Refer to exhibit. Given the topology shown in the exhibit, what three commands are needed to configure EIGRP on the Paris router? (Choose three.)
***Paris(config)# router eigrp 100
Paris(config)# router eigrp
Paris(config-router)# network 192.168.6.0
***Paris(config-router)# network 192.168.7.0
***Paris(config-router)# network 192.168.8.0
Paris(config-router)# network 192.168.9.0
27
What does RIP use to reduce convergence time in a larger network?
It reduces the update timer to 15 seconds if there are more then 10 routes.
***It uses triggered updates to announce network changes if they happen in between the periodic updates.
It uses random pings to detect if a pathway is down and therefore is preemptive on finding networks that
are down.
It uses multicast instead of broadcast to send routing updates.
28
Refer to the exhibit. What two statements are true based on the output shown? (Choose two.)
the reported distance to network 172.16.1.0 is 2172416
192.168.10.5 and 192.168.10.9 are feasible successors
***neighbors 192.168.10.9 and 192.168.10.5 have auto summary disabled
***router 3 is load balancing traffic to the 172.16.3.0 network across its serial interfaces
all interfaces shown on Router3 are in the passive state and will not send EIGRP advertisements
29
Refer to the exhibit. The network is using the RIPv2 routing protocol. If network 10.0.0.0 goes down, what mechanism will prevent Router1 from advertising false routing information back to Router2?
triggered updates
poison reverse
holddown timers
***split horizon
30
What is the function of the OSPF LSU packet?
used to confirm receipt of certain types of OSPF packets
used to establish and maintain adjacency with other OSPF routers
used to request more information about any entry in the BDR
***used to announce new OSPF information and to reply to certain types of requests
31
Refer to the exhibit. The routers in the exhibit are running the EIGRP routing protocol. What statement is true regarding how packets will travel from the 172.16.1.0/16 network to the 192.168.200.0/24 network?
The router chooses the first path that it learned and installs only that route in the routing table.
The router chooses the path with the lowest administrative distance and installs only that route in the routing table.
The router chooses the highest routing ID based on the advertised network IP addresses and installs only that
route in the routing table.
The router installs all the equal cost paths in the routing table but sends packets out only one, holding the others
in reserve in case the primary route goes down.
***The router installs all the equal cost paths in the routing table and performs equal cost load balancing to send
packets out multiple exit interfaces.
32
Refer to the exhibit. A packet enters Router1 with a destination IP of 172.16.28.121. Which routing table entry will be used to forward this packet to the destination address?
172.16.0.0/16 [1/0] via 192.168.0.1
172.16.0.0/20 [1/0] via 192.168.0.9
***172.16.16.0/20 [1/0] via 192.168.0.17
0.0.0.0/0 is directly connected, Serial0/0/1
33
Refer to the exhibit. Routers 1 and 2 are directly connected over a serial link. Pings are failing between the two routers. What change by the administrator will correct the problem?
Set the encapsulation on both routers to PPP.
Decrease the bandwidth on Serial 0/1/0 on router 2 to 1544.
Change the cable that connects the routers to a crossover cable.
***Change the IP address on Serial 0/1/0 on router 2 to 192.168.0.1/30.
34
Which two router component and operation pair are correctly described? (Choose two.)
DRAM - loads the bootstrap
RAM - stores the operating system
Flash - executes diagnostics at bootup
***NVRAM - stores the configuration file
ROM - stores the backup configuration file
***POST - runs diagnostics on hardware modules
35
The network administrator configures the router with the ip route 172.16.1.0 255.255.255.0 172.16.2.2 command.
How will this route appear in the routing table?
C 172.16.1.0 is directly connected, Serial0/0
S 172.16.1.0 is directly connected, Serial0/0
C 172.16.1.0 [1/0] via 172.16.2.2
***S 172.16.1.0 [1/0] via 172.16.2.2
36
Refer to the exhibit. How many routes are both level 1 and qualify for use as an ultimate route?
1
***2
3
4
5
6
37
Refer to the exhibit. All router interfaces are configured with an IP address and are operational. If no routing protocols
All of the 192.168.x.0 networks will be in the routing table.
Routes to networks 192.168.1.0/24, 192.168.2.0/24, and 192.168.3.0/24 will be in the routing table.
***The routing table will be empty because routes and dynamic routes have not been configured.
A default route is automatically installed in the routing table to allow connectivity between the networks.
38
Which three statements about routing protocols are true? (Choose three.)
***OSPF elects designated routers on multiaccess links.
RIP does not support classless routing.
***EIGRP supports unequal cost load balancing.
EIGRP uses broadcast traffic to establish adjacencies with its neighbors.
***RIP does not advertise a route beyond a hop count of 15.
OSPF can convergence more quickly because it can find a feasible successor in its topology table when a successor route goes down.
39
Refer to the exhibit. What will happen if interface Serial0/0/1 goes down on Router1?
The Dijkstra algorithm will calculate the feasible successor.
***DUAL will query neighbors for a route to network 192.168.1.0.
Neighbor 172.16.3.2 will be promoted to the feasible successor.
Traffic destined to the 192.168.1.0 network will be dropped immediately due to lack of a feasible successor.
40
Refer to the exhibit. Which statement is true concerning the routing configuration?
Using dynamic routing instead of static routing would have required fewer configuration steps.
The 10.1.1.0/24 and 10.1.2.0/24 routes have adjacent boudaries and should be summarized.
The static route will not work correctly.
****Packets routed to the R2 ethernet interface require two routing table lookups.
41
A network administrator has enabled RIP on routers B and C in the network diagram. Which of the following commands will prevent RIP updates from being sent to Router A?
A(config)# router rip
A(config-router)# passive-interface S0/0
B(config)# router rip
B(config-router)# network 192.168.25.48
B(config-router)# network 192.168.25.64
A(config)# router rip
A(config-router)# no network 192.168.25.32
***B(config)# router rip
B(config-router)# passive-interface S0/0
A(config)# no router rip
42
Which of the following could describe the devices labeled "?" in the graphic? (Choose three.)
***DCE
***CSU/DSU
LAN switch
***modem
hub
43
Which of the following are required when adding a network to the OSPF routing process configuration? Choose three.)
***network address
loopback address
autonomous system number
subnet mask
***wildcard mask
***area ID
44
The Suffolk router is directly connected to the networks shown in the graphic and has a default route that points to the Richmond router. All interfaces are active and properly addressed. However, when the workstation on network 172.29.5.0/24 sends a packet to destination address 172.29.198.5, it is discarded by the Suffolk router. What can be a reason for this result?
The ip classless command is not enabled on the Richmond router.
***The route was ignored if the Richmond router did not include the 172.29.198.0/24 network in its routing updates.
The Richmond router is in a different autonomous system than the Suffolk router.
The ip subnet-zero command was not configured on the Suffolk router.
The ip classless command is not enabled on the Suffolk router.
45
Refer to the exhibit. When troubleshooting a network, it is important to interpret the output of various router
commands. On the basis of the exhibit, which three statements are true? (Choose three.)
***The missing information for Blank 1 is the command show ip route.
The missing information for Blank 1 is the command debug ip route.
The missing information for Blank 2 is the number 100.
***The missing information for Blank 2 is the number 120.
The missing information for Blank 3 is the letter R.
***The missing information for Blank 3 is the letter C.
46
Refer to exhibit. A company network engineer enters the following commands in the routers:
R1(config)# ip route 10.1.1.0 255.255.255.0 192.168.0.2
R2(config)# ip route 10.1.2.0 255.255.255.0 192.168.0.1
When the engineer enters the show ip route command on R1, the routing table does not display the static route
to the 10.1.1.0 network. All R1 and R2 interfaces are correctly addressed per the graphic. What is a logical next
step that the engineer could take in order to make the static route display in the routing table in R1?
Enter default routes in R1 and R2.
Enable the R1 and R2 serial interfaces.
***Configure the static route to use an exit interface instead of a next-hop address.
Enter the copy run start command to force the router to recognize the configuration.
47
Refer to the exhibit. The network administrator is testing network connectivity by issuing the tracert command from host A to host B. Given the exhibited output on host A, what are two possible routing table issues on the network? (Choose two.)
Router1 is missing a route to the 172.16.0.0 network
Router1 is missing a route to the 192.168.1.0 network
Router2 is missing a route to the 10.0.0.0 network
***Router2 is missing a route to the 172.16.0.0 network
***Router3 is missing a route to the 10.0.0.0 network
Router3 is missing a route to the 192.168.0.0 network
48
What are two tasks that must be completed before two routers can use OSPF to form a neighbor adjacency?Choose two.)
The routers must elect a designated router.
***The routers must agree on the network type.
***The routers must use the same dead interval.
The routers must exchange link state requests.
The routers must exchange database description packets.
49
Refer to the routing table shown in the exhibit. What is the meaning of the highlighted value 192?
It is the value assigned by the Dijkstra algorithm that designates the number of hops in the network.
It is the value used by the DUAL algorithm to determine the bandwidth for the link.
***It is the metric, which is cost.
It is the administrative distance.
50
Refer to the exhibit. The results of the show ip route command are displayed in the graphic for Router R2. Which route will be selected for a packet with a destination address of 10.1.4.1?
static route to 10.1.0.0/22
RIP route to 10.1.0.0/23
RIP route to 10.1.0.0/24
***0.0.0.0/0 via 192.168.0.1
51
Refer to the exhibit. Packets destined to which two networks will require the router to perform a recursive lookup? (Choose two.)
10.0.0.0/8
64.100.0.0/16
128.107.0.0/16
***172.16.40.0/24
192.168.1.0/24
***192.168.2.0/24
52
Which of the following are primary functions of a router? (Choose two.)
***packet switching
microsegmentation
domain name resolution
***path selection
flow control
53
What are three features of CDP? (Choose three.)
***tests Layer 2 connectivity
provides a layer of security
operates a OSI layers 2 and 3
***enabled by default on each interface
used for debugging Layer 4 connectivity issues
***provides information on directly connected devices that have CDP enabled
54
Refer to the exhibit. All routers in the network are running RIPv2 and EIGRP with default routing protocol settings and have interfaces configured with the bandwidths that are shown in the exhibit. Which protocol will be used and how will traffic between the Router1 LAN and Router5 LAN be routed through the network?
RIPv2 will load balance across both paths between Router1 and Router5.
EIGRP will load balance across both paths between Router1 and Router5.
***RIPv2 traffic will use the path Router1, Router2, Router5 because it has the least hops.
EIGRP traffic will use the path Router1, Router3, Router4, Router5 because it has the best metric.
55
Which three statements describe the operation of routing with EIGRP? (Choose three.)
***As new neighbors are discovered, entries are placed in a neighbor table.
If the feasible successor has a higher advertised cost than the current successor route, then it becomes the primary route.
***If hello packets are not received within the hold time, DUAL must recalculate the topology.
***The reported distance is the distance to a destination as advertised by a neighbor.
EIGRP maintains full knowledge of the network topology in the topology table and exchanges full routing information with neighboring routers in every update.
EIGRP builds one routing table that contains routes for all configured routed protocols.
56
Which of the following should be considered when troubleshooting a problem with the establishment of neighbor relationships between OSPF routers? (Choose three.)
***OSPF interval timers mismatch
gateway of last resort not redistributed
***interface network type mismatch
no loopback interface configured
administrative distance mismatch
***inconsistent authentication configuration
57
What is the first step OSPF and IS-IS routers take in building a shortest path first database?
learn about directly connected networks
***send hello to discover neighbors and form adjacencies
choose successors and feasible successors to populate the topology table
flood LSPs to all neighbors informing them of all known networks and their link states
CCNA 2 Versi 4 Final Type 1
CCNA Exploration Assessments -- Version 4.0 -- Everything I have about CCNA is on this blog and anything new I get will be posted. -- Good luck with your Assessments -- Not all tests are 100% correct --
Which three statements are true regarding the encapsulation and de-encapsulation of packets when traveling through a router? (Choose three.)
- The router modifies the TTL field, decrementing it by one.
- The router maintains the same source and destination IP.
- The router changes the source physical address to the physical address of the exit interface.
2.
Which of the following are primary functions of a router? (Choose two.)
- packet switching
- path selection
3.
Refer to the exhibit. Which statement is true concerning the routing configuration?
- Packets routed to the R2 ethernet interface require two routing table lookups.
4.
Refer to the exhibit. The results of the show ip route command are displayed in the graphic for Router R2. Which route will be selected for a packet with a destination address of 10.1.4.1?
- 0.0.0.0/0 via 192.168.0.1
5.
Refer to the exhibit. Packets destined to which two networks will require the router to perform a recursive lookup? (Choose two.)
- 10.0.0.0/8
- 192.168.2.0/24
6.
Refer to the exhibit. Pings are failing between HostA and HostB. The network administrator discovers that Router1 does not have a route to the 172.16.0.0 network. Assuming Router2 is configured correctly, which two static routes could be configured on Router1 to enable Host A to reach network 172.16.0.0? (Choose two.)
- ip route 172.16.0.0 255.255.0.0 S0/0
- ip route 172.16.0.0 255.255.0.0 192.168.0.2
7.
What can be determined from the output shown in the exhibit? (Choose two.)
- Montgomery has Layer 2 connectivity with Cumberland.
- Brant, Fisherman, and Potomac are directly connected to Montgomery.
8.
Refer to the exhibit. Which path will traffic from the 172.16.1.0/24 network take to get to the 10.0.0.0/24 network?
- It will load balance the traffic between ADC and ABC
9.
Which two statements are true regarding link-state routing protocols? (Choose two.)
- They are aware of the complete network topology.
- They offer rapid convergence times in large networks
10.
Refer to the routing table shown in the exhibit. What is the meaning of the highlighted value 192?
- It is the metric, which is cost
11.
A router has learned about a network through static and dynamic routing processes. Which route will be used to reach network 192.168.168.0?
- S 192.168.168.0/24 [1/0] via 192.168.200.1
12.
When presented with multiple valid routes to a destination, what criteria does a router use to determine which routes to add to the routing table?
- The router first selects routes with the lowest administrative distance. The resulting routes are then prioritized by metric and the routes with the best metric are added to the routing table.
13.
What does RIP use to reduce convergence time in a larger network?
- It uses triggered updates to announce network changes if they happen in between the periodic updates.
14.
Which three statements are true of holddown timers? (Choose three.)
- prevent update messages from reinstating a route that may have gone bad
- allow routers to still forward packets to destination networks that are in holddown
- permit lower metric updates received from any neighboring router to reinstate the route to a possibly down network
15.
Refer to the exhibit. The network is using the RIPv2 routing protocol. If network 10.0.0.0 goes down, what mechanism will prevent Router1 from advertising false routing information back to Router2?
- split horizon
16.
Refer to the exhibit. The network is running the RIP routing protocol. Network 10.0.0.0 goes down. Which statement is true regarding how the routers in this topology will respond to this event?
- Router5 will send Router4 a triggered update with a metric of 16 for network 10.0.0.0.
17.
What is the purpose of the TTL field within an IP packet header?
- limits the period of time or number of hops a packet can traverse through the network before it should be discarded
18.
A network administrator has enabled RIP on routers B and C in the network diagram. Which of the following commands will prevent RIP updates from being sent to Router A?
- B(config)# router rip
- B(config-router)# passive-interface S0/0
19.
Which statement is true regarding routing metrics?
- Routers compare metrics to determine the best route
20.
Refer to the exhibit. When troubleshooting a network, it is important to interpret the output of various router commands. On the basis of the exhibit, which three statements are true? (Choose three.)
- The missing information for Blank 1 is the command show ip route
- The missing information for Blank 2 is the number 120
- The missing information for Blank 3 is the letter C
21.
Refer to the exhibit. What is the most efficient summarization of the routes attached to router R1?
- 198.18.48.0/21
22.
The network shown in the diagram is having problems routing traffic. It is suspected that the problem is with the addressing scheme. What is the problem with the addressing used in the topology?
- The subnetwork configured on the serial link between Router1 and Router2 overlaps with the subnetwork assigned to Ethernet0 of Router3
23.
Refer to the exhibit. How many routes are both level 1 and qualify for use as an ultimate route?
- 2
24.
The Suffolk router is directly connected to the networks shown in the graphic and has a default route that points to the Richmond router. All interfaces are active and properly addressed. However, when the workstation on network 172.29.5.0/24 sends a packet to destination address 172.29.198.5, it is discarded by the Suffolk router. What can be a reason for this result?
- The ip classless command is not enabled on the Suffolk router
25.
Which three statements describe the operation of routing with EIGRP? (Choose three.)
- As new neighbors are discovered, entries are placed in a neighbor table.
- If hello packets are not received within the hold time, DUAL must recalculate the topology
- The reported distance is the distance to a destination as advertised by a neighbor
26.
Refer to exhibit. Given the topology shown in the exhibit, what three commands are needed to configure EIGRP on the Paris router? (Choose three.)
- Paris(config)# router eigrp 100
- Paris(config-router)# network 192.168.7.0
- Paris(config-router)# network 192.168.8.0
27.
Refer to the exhibit. What two statements are true based on the output shown? (Choose two.)
- neighbors 192.168.10.9 and 192.168.10.5 have auto summary disabled
- router 3 is load balancing traffic to the 172.16.3.0 network across its serial interfaces
28.
Refer to the exhibit. A new PC was deployed in the Sales network. It was given the host address of 192.168.10.31 with a default gateway of 192.168.10.17. The PC is not communicating with the network properly. What is the cause?
- 192.168.10.31 is the broadcast address for this subnet
29.
Refer to the exhibit. Which three statements are true of the routing table for Router1? (Choose three.)
- The AD of EIGRP routes has been manually changed to a value other than the default value.
- Router1 is running both the EIGRP and OSPF routing process.
- No default route has been configured.
30.
Which of the following could describe the devices labeled "?" in the graphic? (Choose three.)
- DCE
- CSU/DSU
- modem
31.
Using default settings, what is the next step in the router boot sequence after the IOS loads from flash?
- Locate and load the startup-config file from NVRAM
32.
Refer to the exhibit. What are the effects of the exhibited commands on the router?
- Only the enable password is encrypted
33.
When the show cdp neighbors command is issued from Router C, which devices will be displayed in the output?
- B, D
34.
Refer to exhibit. A company network engineer enters the following commands in the routers:
- R1(config)# ip route 10.1.1.0 255.255.255.0 192.168.0.2
R2(config)# ip route 10.1.2.0 255.255.255.0 192.168.0.1
35.
When the engineer enters the show ip route command on R1, the routing table does not display the static route to the 10.1.1.0 network. All R1 and R2 interfaces are correctly addressed per the graphic. What is a logical next step that the engineer could take in order to make the static route display in the routing table in R1?
- Enable the R1 and R2 serial interfaces
36.
Which two router component and operation pair are correctly described? (Choose two.)
- NVRAM - stores the configuration file
- POST - runs diagnostics on hardware modules
37.
What are three features of CDP? (Choose three.)
- tests Layer 2 connectivity
- enabled by default on each interface
- provides information on directly connected devices that have CDP enabled
38.
Refer to the exhibit. R1 knows two routes, Path A and Path B, to the Ethernet network attached to R3. R1 learned Path A to network 10.2.0.0/16 from a static route and Path B to network 10.2.0.0/16 from EIGRP. Which route will R1 install in its routing table?
- The route via Path A is installed because the static route has the lowest administrative distance to network 10.2.0.0/16.
39.
What command would the network administrator apply to a router that is running OSPF to advertise the entire range of addresses included in 172.16.0.0/19 in area 0?
- R1(config-router)# network 172.16.0.0 0.0.31.255 area 0
40.
Refer to the exhibit. What will happen if interface Serial0/0/1 goes down on Router1?
- DUAL will query neighbors for a route to network 192.168.1.0.
41.
What is the function of the OSPF LSU packet?
- used to announce new OSPF information and to reply to certain types of requests
42.
Refer to the exhibit. Hosts on the BOS Fa0/0 LAN are able to ping the Fa0/1 interface on the JAX router and all interfaces on the BOS and ORL routers. Why would hosts from the 10.0.0.0/24 network not be able to ping hosts on the Fa0/0 LAN of the JAX router?
- The JAX router needs the network 192.168.3.0 0.0.0.255 area 0 command.
43.
What are two tasks that must be completed before two routers can use OSPF to form a neighbor adjacency? (Choose two.)
- The routers must agree on the network type.
- The routers must use the same dead interval
44.
Which three statements about routing protocols are true? (Choose three.)
- OSPF elects designated routers on multiaccess links
- EIGRP supports unequal cost load balancing
- RIP does not advertise a route beyond a hop count of 15
45.
A network administrator has configured a default route on Router_A but it is not being shared with adjacent Router_B and the other routers in the OSPF area. Which command will save the administrator the time and trouble of configuring this default route on Router_B and all of the other routers in the OSPF area?
- Router_A(config-router)# default-information originate
46.
Which of the following are required when adding a network to the OSPF routing process configuration? (Choose three.)
- network address
- wildcard mask
- area ID
47.
Which of the following should be considered when troubleshooting a problem with the establishment of neighbor relationships between OSPF routers? (Choose three.)
- OSPF interval timers mismatch
- interface network type mismatch
- inconsistent authentication configuration
48.
Refer to the exhibit. The routers in the exhibit are running the EIGRP routing protocol. What statement is true regarding how packets will travel from the 172.16.1.0/16 network to the 192.168.200.0/24 network?
- The router installs all the equal cost paths in the routing table and performs equal cost load balancing to send packets out multiple exit interfaces
49.
What is the first step OSPF and IS-IS routers take in building a shortest path first database?
- learn about directly connected networks
50.
Refer to the exhibit. Routers 1 and 2 are directly connected over a serial link. Pings are failing between the two routers. What change by the administrator will correct the problem?
- Change the IP address on Serial 0/1/0 on router 2 to 192.168.0.1/30.
51.
Refer to the exhibit. The network administrator issues the command no ip classless on Router1. What forwarding action will take place on a packet that is received by Router1 and is destined for host 192.168.0.26?
- The packet will be dropped.
52.
The network administrator configures the router with the ip route 172.16.1.0 255.255.255.0 172.16.2.2 command. How will this route appear in the routing table?
- S 172.16.1.0 [1/0] via 172.16.2.2
53.
Refer to the exhibit. The network administrator is testing network connectivity by issuing the tracert command from host A to host B. Given the exhibited output on host A, what are two possible routing table issues on the network? (Choose two.)
- Router2 is missing a route to the 172.16.0.0 network
- Router3 is missing a route to the 10.0.0.0 network
54.
Refer to the exhibit. All routers in the network are running RIPv2 and EIGRP with default routing protocol settings and have interfaces configured with the bandwidths that are shown in the exhibit. Which protocol will be used and how will traffic between the Router1 LAN and Router5 LAN be routed through the network?
- EIGRP traffic will use the path Router1, Router3, Router4, Router5 because it has the best metric
55.
Refer to the exhibit. All router interfaces are configured with an IP address and are operational. If no routing protocols or static routes are configured, what information will be included in the show ip route command output for router A?
- Routes to networks 192.168.1.0/24, 192.168.2.0/24, and 192.168.3.0/24 will be in the routing table.
56.
Refer to the exhibit. What summary address can Router2 advertise to Router1 to reach the three networks on Routers 3, 4, and 5 without advertising any public address space or overlapping the networks on Router1?
- 172.16.0.0/13
Selasa, 2008 Juli 01
CCNA 2 Versi 4 Chapter 6
Take Assessment - ERouting Chapter 6 - CCNA Exploration: Routing Protocols and Concepts (Version 4.0)
1 What two advantages does CIDR provide to a network? (Choose two.)
o reduced routing table size
o dynamic address assignment
o automatic route redistribution
o reduced routing update traffic
o automatic summarization at classful boundaries
2
Refer to the exhibit. Which address is a broadcast address for one of the subnets that are shown in the exhibit?
o 192.168.4.3/29
o 192.168.4.15/29
o 192.168.4.65/26
o 192.168.4.255/24
3
In the network shown in the graphic, three bits were borrowed from the host portion of a Class C address.
o 3
o 4
o 12
o 36
o 84
o 180
4 Which of the following are contained in the routing updates of classless routing protocols? (Choose two.)
o 32-bit address
o next hop router interface
o subnet mask
o unicast host address
o Layer 2 address
5
Refer to the exhibit. The network administrator wants to create a subnet for the point-to-point connection
o 255.255.255.192
o 255.255.255.224
o 255.255.255.240
o 255.255.255.248
o 255.255.255.252
6 What does VLSM allow a network administrator to do?
o utilize one subnet mask throughout an autonomous system
o utilize multiple subnet masks in the same IP address space
o utilize IGRP as the routing protocol in an entire autonomous system
o utilize multiple routing protocols within an autonomous system
7 Which three interior routing protocols support VLSM? (Choose three.)
o OSPF
o RIP v1
o RIP v2
o EIGRP
o BGP
o STP
8 Which of the following problems does VLSM help to alleviate?
o the shortage of IP addresses
o the difficulty of assigning static IP addresses to hosts in large enterprises
o the complexity of implementing advanced routing protocols such as OSPF and EIGRP
o the shortage of network administrators qualified in the use of RIP v1 and IGRP
9
Refer to the exhibit. A network technician enters the static route in R1 needed to reach network 10.1.1.0/24.
1. pings from R1 to the S0/0/0 interface on R2....successful
2. pings from R1 to the Fa0/0 interface on R2....successful
3. pings from host B to hosts on the 10.1.1.0/24 network....successful
4. pings from host B to the Fa0/0 interface on R2....successful
5. pings from R2 to host B....successful.
What is the likely cause of the failure of the ping from R1 to host B?
o The default gateway on host B is not correctly set.
o There are no routes back to networks connected to R1 from R2.
o There is a Layer 2 problem between R2 and host B.
o Host B has a defective Ethernet card.
10 A network administrator is tasked with dividing up a class C network among the QA, Sales, and
o 255.255.255.252 for QA
o 255.255.255.224 for Sales
o 255.255.255.240 for QA
o 255.255.255.248 for QA
o 255.255.255.0 for Sales
11
Refer to the exhibit. A network engineer is summarizing the two groups of routes on router R1 shown in
o 192.168.0.0/23
o 192.168.0.0/22
o 192.168.0.0/21
o 192.168.0.0/20
12
A Class C address has been assigned for use in the network shown in the graphic. Using VLSM, which
o /31
o /30
o /29
o /28
o /27
o /26
13
Refer to the exhibit. In the network that is shown, the router interfaces are assigned the first address in
o 192.168.1.5/30
o 192.168.2.17/28
o 192.168.2.63/27
o 192.168.2.130/25
14
Refer to the exhibit. What subnet mask will be applied if Router A sends a RIPv1 update for the network
o none
o 8
o 16
o 24
15
Refer to the exhibit. The number of required host addresses for each subnet in a network is listed in the
o 6
o 14
o 29
o 34
o 40
o 62
16
An additional subnet is required for a new Ethernet link between Router1 and Router2 as shown in the
o 192.1.1.16/26
o 192.1.1.96/28
o 192.1.1.160/28
o 192.1.1.196/27
o 192.1.1.224/28
o 192.1.1.240/28
17 What is a supernet?
o the network for a default route
o a summarization of classful addresses
o a network that contains both private and public addresses
o a set of discontiguous networks that are controlled by an ISP
18
Refer to the exhibit. A network administrator needs to create two subnetworks from 10.0.0.0/8 for a router
o Because RIPv2 does not support VLSM, the subnet masks will not be allowed.
o The subnets will not have enough host addresses for the given network requirements.
o The subnets overlap and will be rejected by the router.
o The router will support the addressing scheme.
19 A router has a summary route to network 192.168.32.0/20 installed in its routing table. What range of
o 192.168.0.0 – 192.168.32.0/24
o 192.168.0.0 – 192.168.47.0/24
o 192.168.32.0 – 192.168.47.0/24
o 192.168.32.0 – 192.168.48.0/24
o 192.168.32.0 – 192.168.63.0/24
20
Refer to the exhibit. The network administrator wants to minimize the number of entries in Router1’s
o VLSM
o CIDR
o private IP addresses
o classful routing
CCNA 2 Versi 4 Chapter 7
Take Assessment - ERouting Chapter 7 - CCNA Exploration: Routing Protocols and Concepts (Version 4.0)
1 A network administrator has been told that the company IP address infrastructure must adhere to RFC 1918.
o 10.0.0.0/8**
o 127.0.0.0/8
o 169.254.0.0/16
o 172.16.0.0/12**
o 192.168.0.0/16**
o 209.165.201.0/27
2
Refer to the exhibit. Routers East and West are configured using RIPv1. Both routers are sending updates about
o A gateway of last resort is required.
o Subnetting is not supported by RIPv1.
o VLSM is not supported by RIPv1.**
o One of the routers needs a clock rate on the serial interface.
3
Refer to the exhibit. What effect will the commands that are shown have on RIP updates for Router1?
o Only version 2 updates are sent to 255.255.255.255.
o Only version 2 updates are sent to 224.0.0.9.**
o Both version 1 and version 2 updates are sent to 224.0.0.9.
o Both version 1 and version 2 updates are sent to 255.255.255.255.
4
Refer to the exhibit. What can be concluded from the output shown in the exhibit?
o The routing table is limited to 2 routes.
o The LAN interfaces are participating in the routing process.
o One update has been sent out of each serial interface and 2 have been received.
o The no auto-summary has not been configured on this router.**
5 What are two reasons to implement RIP version 2 rather than RIP version 1? (Choose two.)
o RIP version 2 supports VLSM.**
o RIP version 2 supports more than 16 routers.
o RIP version 2 supports classful (and not classless) routing
o RIP version 2 supports routing update authentication.**
o RIP version 2 supports multi-areas.
o RIP version 2 uses the Dijkstra algorithm rather than the Bellman-Ford algorithm.
6
Refer to the exhibit. RIPv1 is configured as the routing protocol for the network that is shown. The following
router rip
network 10.0.0.0
network 172.16.0.0
When this configuration is complete, users on the LAN of each router are unable to access the remote LANs.
o The network statements are configured incorrectly.
o A routing loop has been created.
o RIPv1 is unable to route to discontiguous subnets of a major network.**
o RIPv1 is unable to route networks with a /24 subnet mask.
7 A network administrator installed four new routers that are running RIPv2. Router1 is a boundary router in the
o prevents Router1 from forwarding updates about networks that are not directly connected
o causes all routers in the network to synchronize routing updates with Router1
o forces Router1 to become the primary or designated router (DR) for updates
o propagates the default route to all routers in the network**
8
Refer to the exhibit. A technician needs to add a new loopback interface to test routing functionality and network
Sanford(config)# interface loopback1
Sanford(config-if)# ip address 192.168.6.62 255.255.255.252
Why does the router respond with an error?
o The router does not allow loopback interface configurations.
o This mask can not be used with this class of addresses.
o Classless routing must be configured before this address can be added.
o The network address for Loopback1 overlaps with an already configured interface address.**
o The router is over the limit for the maximum paths that can be provided in the routing table.
9 What is the maximum network diameter permitted by the default metric of RIPv2?
o 15 hops**
o 16 hops
o 100 hops
o 120 hops
o 255 hops
10 What are two functions of the network command used when configuring routing protocols? (Choose two.)
o identifies which networks will be included in the routing updates**
o identifies the hosts addresses that can be summarized in the network
o used to list all addresses for remote and local networks
o determines which subnet mask to apply to routing updates
o determines which interfaces can send and receive routing updates**
11
Refer to the exhibit. All routers are running RIPv1. What changes will occur in the routing table of router B if a
o Routes to the 10.16.1.0/27, 10.16.1.64/27, and 10.16.1.128/27 networks are added.
o A connected route to the 10.16.1.128/27 network is added.
o A third route to the 10.0.0.0/8 network with RIPv1 as the source is added.
o The 10.0.0.0/8 route is dropped immediately from the routing table after router B is configured.
12
Refer to the exhibit. If all routers are running RIP version 2, why is there no route for the 192.168.1.32/27
o Rip version 2 does not send subnet masks in its updates.
o Router A is not setup with RIP as a routing protocol.
o Rip version 2 will auto summarize routes by default.**
o Router B is not setup to advertise the 192.168.1.64/30 network.
13 RIPv2 is the configured routing protocol on the routers in a network. The command Router(config-router)# no
o Subnet masks will be added to the routing updates.
o Routing updates will be sent out using multicast address 224.0.0.9.
o Version 1 and 2 updates will be received and the version 2 updates will not be sent.**
o The RIP routing process will be removed from the router and routing updates will not be forwarded.
14 How are RIP v1 and RIP v2 similar to one another? (Choose three.)
o They both use hop count as a metric.**
o They both have the same metric value for infinite distance.**
o They both broadcast their updates to their neighbors.
o They both send subnet mask information in their updates.
o They both provide for authentication of update sources.
o They both use split horizon to prevent routing loops.**
15
Refer to the exhibit. The exhibited network contains a mixture of Cisco and non-Cisco routers. The command
o Enable split horizon in the network.
o Configure RIPv2 on routers.**
o Add network 192.168.1.0 to the RIP configuration on the JAX router.
o Configure JAX Fa0/0 as a passive interface.
o Enable the Serial0/0/0 interface on the JAX router.
o Change the IP address on the Fa0/0 interface of the JAX router to 192.168.1.1/24.
16 What field was added to the RIP message header by RFC 1723 to add support for VLSM and CIDR?
o subnet mask**
o destination port number
o address family identifier
o source and destination IP addresses
17
Refer to the exhibit. Which command on which router will allow Router1 to learn about the 192.168.0.0/20
o Router1(config)# ip classless
o Router1(config-router)# no passive-interface serial 0/1/1
o Router2(config-router)# version 2**
o Router2(config-router)# neighbor 10.0.0.2
18
Refer to the exhibit. Which two statements are true? (Choose two.)
o Router1 will install a route to 192.168.0.0/20**
o Router1 will install a route to 192.168.0.0/24
o Router1 will install a route to 192.168.16.0/24
o Router2 will install a route to 192.168.16.0/24
o Router2 will not install a route to 192.168.16.0/20**
19
Refer to the exhibit. All routers are running RIP version 2. JAX is configured to just advertise the 10.0.0.0/24
o The JAX router will ignore updates for the 172.16.0.0/16 network due to split horizon issues.
o The CHI router will install a route to the 192.168.0.0/16 network in its routing table.**
o The routing table for CHI will have the 192.168.0.0/16 route but it will have an S next to the route.
o The ORL router will apply a 255.255.0.0 subnet mask to all networks in the routing updates it forwards.
20
Refer to the exhibit. Which command will allow Router2 to learn about the 192.168.16.0/28 network?
o Router1(config)# ip classless
o Router1(config-router)# network 192.168.16.0**
o Router1(config-router)# no passive-interface serial 0/1/1
o Router2(config-router)# version 2
