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Monday, 11 June 2012

CCNA Exploration 2 ERouting Practice Final Exam Answer

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Refer to the exhibit. R1 and R2 are unable to establish an adjacency. What two configuration changes will correct the problem? (Choose two.)
Set a lower priority on R2.
Configure the routers in the same area.
Set a lower cost on R2 compared to R1.
Add a backup designated router to the network.
Match the hello and dead timers on both routers.
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What is the advantage of configuring a static route with an exit interface instead of a next-hop address?
The router will perform a recursive lookup.
This route will automatically be used as the gateway of last resort.
The exit interface configuration consumes less router processing time.
The exit interface configuration has an administrative distance value of 1.
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Which phase of the router boot process involves running diagnostics on the hardware components from ROM?
performing the POST
loading the bootstrap program
locating and loading the Cisco IOS software
locating and loading the startup configuration file
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Refer to the exhibit. All routes are advertised and fully operational on all routers. Which statement is true about the path that the data will take from router A to router B?
If EIGRP is used with default configurations, the data will be equally distributed between two paths — A, D, B and A, C, B.
If RIPv1 is used with default configurations, the data will be load-balanced on all paths.
If EIGRP and OSPF are both used with default configurations, the data will be sent through paths learned by the OSPF protocol.
If RIPv2 is used with default configurations, the data will be equally distributed between two paths — A, D, B and A, C, D.
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Refer to the exhibit. What information can be determined from the highlighted output?
R1 is originating the route 172.30.200.32/28.
Automatic summarization is disabled.
The 172.30.200.16/28 network is one hop away from R1.
A classful routing protocol is being used.
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Refer to the exhibit. Based on the output from the show running-config and debug ip rip commands, what are two of the routes that are added to the routing table of R1? (Choose two.)
R 192.168.1.0/24 [120/1] via 172.16.2.1, 00:00:24, Serial0/0/1R 192.168.100.0/24 [120/1] via 172.16.1.1, 00:00:24, Serial0/0/0S 192.168.1.0/24 [1/0] via FastEthernet0/0R 192.168.9.0/24 [120/1] via 172.16.2.1, 00:00:24, Serial0/0/0R 192.168.2.0/24 [120/1] via 172.16.1.2, 00:00:24, Serial0/0/0

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.

6. 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

Refer to the exhibit. The network has three connected routers: R1, R2, and R3. The routes of all three routers are displayed. All routers are operational and pings are not blocked on this network.

Which ping will fail?
from R1 to 172.16.1.1from R1 to 192.168.3.1from R2 to 192.168.1.1from R2 to 192.168.3.1

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.


Refer to the exhibit. How many routes are child routes?
4

·  Which two situations require the use of a link-state protocol? (Choose two.) Fast convergence of the network is critical. ; The network is very large.

12. Refer to the exhibit. R2 is configured correctly. The network administrator has configured R1 as shown. Which two facts are true about the forwarding of route information by R1? (Choose two.)
ans:
R1 will forward the route information for subnet 192.168.100.0/30.
R1 will forward the route information with an administrative distance set to 50.

What is one function of the bootstrap program during the router boot process?
loading Cisco IOS software

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.

Refer to the exhibit. A network designer is testing a prototype of WAN connections. All of the routers in the exhibit are configured for OSPF routing. The design requires that the path between routers A and D through ISP-A is the primary and the path through ISP-B servers as a backup. The designer notices that router A has two equal-cost paths to the LAN on router D. How can the designer correct this problem?
Use the bandwidth command to change the default bandwidth on the link to router B.

30. A network administrator needs to assign the very last usable IP address in the 172.24.64.0/18 network range to the router interface that serves this LAN. Which IP address should the administrator configure on the interface?
172.16.128.154/18
172.16.255.254/18
172.24.64.254/18
172.24.127.254/18


Which port should a terminal emulator be connected to in order to access a router without network connectivity? Console

Refer to the exhibit. The show cdp neighbors command was run at R1. Which two facts about the newly detected device can be determined from the output? (Choose two.)
ABCD is a router that is connected to R1.
ABCD is a non-CISCO device that is connected to R1.
The device is connected at the Serial0/0/1 interface of R1.
R1 is connected at the S0/0/1 interface of device ABCD.
ABCD does not support switching capability.

Refer to the exhibit. Host A is having problems accessing server A. All routers have the same EIGRP configuration as router RTR_A. What should be done so that host A can access server A?
Add the command no auto-summary on all routers.


Refer to the exhibit. Router R2 is configured properly and all interfaces are functional. Router R1 has been installed recently. Host A is unable to ping host B.
Which procedure can resolve this problem?
Configure a static route on R1 using the IP address of the serial interface on R1.
Configure a default route on R1 with the exit interface Fa0/0 on R1.
Configure a static route on R1 using the IP address of S0/0/0 on R2.
Configure a default route on R1 using the IP address of Fa0/0 on R2.


11. 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?
ans:
The subnetwork configured on the serial link between Router1 and Router2 overlaps with the subnetwork assigned to Ethernet0 of Router3.

7. Refer to the exhibit. Routers R1 and R3 use different routing protocols with default administrative distance values. All devices are properly configured and the destination network is advertised by both protocols.
Which path will be used to transmit the data packets between PC1 and PC2?
The packets will travel via R2-R1.
The packets will travel via R2-R3.
The traffic will be load-balanced between two paths — via R2-R1 and via R2-R3.
The packets will travel via R2-R3, and the other path via R2-R1 will be retained as the backup path

Refer to the exhibit. The network administrator is planning IP addressing of a new network. What part of this addressing scheme must be changed to allow communication between host A and the server?  the IP address of the server

38. A router has EIGRP configured as the only routing protocol. In what way might EIGRP respond if there is no feasible successor route to a destination network and the successor route fails?
It broadcasts hello packets to all routers in the network to re-establish neighbor adjacencies.
It sends queries to adjacent neighbors until a new successor route is found.
It immediately sends its entire routing table to its neighbors.
It will set the metric for the failed route to infinity.


Refer to the exhibit. What information can be determined from the displayed output?
EIGRP packets are waiting to be sent to the neighbors.
The adjacencies between the routers are yet to be established.
The IP address 192.168.10.10 is configured at serial interface S0/0/1 of router R2.
Router R2 is receiving hello packets from a neighbor with the IP address 192.168.10.10 via the R2 S0/0/1 interface.


10. Refer to the exhibit. A network administrator has run the show interface command. The output of this command is displayed. What is the first step that is required to make this interface operational?
ans:
Issue the no shutdown command on the interface.

3. Refer to the exhibit. Two routers are unable to establish an adjacency. What is the possible cause for this?
ans:
The hello and dead intervals are different on the two routers.

40. Refer to the exhibit. All routers are running RIPv1. The two networks 10.1.1.0/29 and 10.1.1.16/29 are unable to access each other. What can be the cause of this problem?
ans:
RIPv1 does not support discontiguous networks.

Refer to the exhibit. R1 and R2 are adjacent routers both running RIP. All interfaces on both routers are correctly configured and operational. Both routers are configured to include all connected interfaces in routing updates. R2 is not showing any routes from R1 in the routing table. What is the likely cause?
The adjacent interfaces are passive.
The distance of 120 exceeds 15 hops.
R2 will not accept version 1 updates from R1.
Routes are being summarized by R1 but not by R2.


42. A network is configured with the IP, IPX, and AppleTalk protocols. Which routing protocol is recommended for this network?
RIPv1
RIPv2
EIGRP
OSPF


7. 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?
ans:
split horizon

Refer to the exhibit. A network administrator has configured OSPF using the following command:
network 192.168.1.32 0.0.0.31 area 0
Which router interface will participate in OSPF?
FastEthernet0/0
FastEthernet0/1
Serial0/0/0
Serial0/0/1


6. Refer to the exhibit. What is the meaning of the highlighted value 2?
ans:
It is the number of hops between R2 and the 192.168.8.0/24 network.


31. Refer to the exhibit. A ping between host A and host B is successful, but pings from host A to operational hosts on the Internet fail. What is the reason for this problem?
ans:
One of the default routes is configured incorrectly.


Refer to the exhibit. What destination address will RTB use to advertise LSAs?
224.0.0.5

9. Refer to the exhibit. The routers are properly configured using a dynamic routing protocol with default settings, and the network is fully converged. Router A is forwarding data to router E. Which statement is true about the routing path?
ans:
If the network uses the RIP protocol, router A will determine that all paths have equal cost.


21. Refer to the exhibit. To implement the RIPv2 protocol, the network administrator runs the commands as displayed. However, the show ip protocol command fails to display any output. How can the administrator solve the problem that is indicated by the lack of output from this command?
ans:
Specify the network for which RIP routing has to be enabled.


30. 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?
ans:
192.168.10.31 is the broadcast address for this subnet.


14. Refer to the exhibit. A network administrator has configured R1 as shown, and all interfaces are functioning correctly. A ping from R1 to 172.16.1.1 fails. What could be the cause of this problem?
ans:
The default route is configured incorrectly.


7. What is the function of the OSPF LSR packet?
ans:
It is used by the receiving routers to request more information about any entry in the DBD.


Refer to the exhibit. What happens to a packet that has 172.16.0.0/16 as the best match in the routing table that is shown? The packet is discarded.

57. Refer to the exhibit. What summarization should R2 use to advertise its LAN networks to R1?
• 172.16.0.0/24
• 172.16.4.0/22
• 172.16.4.0/23
• 172.16.4.0/24

40 A sniffer program has captured a packet with a destination IP address of 224.0.0.10. Which protocol uses this IP address?

RIP
RIPv2
OSPF
EIGRP

A network technician must reduce the amount of broadcast traffic on the network while maintaining full connectivity between all different network segments. Which device should the administrator deploy?
hub

Refer to the exhibit. What needs to be done to allow these two routers to connect successfully?
Add a clock rate to S0/0/0 on R1.

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