31134087 CCNA Exploration 2 Doc

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Exam Viewer - ERouting Final Exam - CCNA Exploration: Routing Protocols and Concepts

(Version 4.0)

Below you will find the assessment items as presented on the exam as well as the scoring rulesassociated with the item.

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1 What are two functions of a router? (Choose two.)It forwards data packets toward their destination.

It forwards the packet to the destination if the TTL value is 0.

It changes the destination IP address of data packets before forwarding theminterface.

It determines the best path based on the destination MAC address.

It acts as an intersection between multiple IP networks.

Observable DescriptionMax

Value

1correctness of

response

Option 1 and Option 5 are correct.

1 point for each correct option.

0 points if more options are selectedthan required.

2

This item references content from the following areas:CCNA Exploration: Routing Protocols and Concepts

2.1.1 Role of the Router

2
http://opt/scribd/conversion/tmp/scratch2498/


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Refer to the exhibit. A network engineer has run the show version command on R3. Uprebooting, R3 does not load the start-up configuration settings.

What could be the cause of this problem?

There is insufficient NVRAM.

There is insufficient flash memory.

The configuration register is not configured with the default setting.

The system image file is not located in NVRAM.

Observable Description Max Value

1correctness

of response

2 points for Option 3

0 points for any other option2

This item references content from the following areas:

CCNA Exploration: Routing Protocols and Concepts

1.1.4 Router Boot-up Process

3 Which router component contains a scaled-down version of the IOS that can be u

a complete version of the IOS in the event that the IOS becomes damaged or corr

ROM

Flash

SDRAM

NVRAM


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1correctness ofresponse


0 points for any otheroption

2


1.1.2 Router CPU and Memory

4

Refer to the exhibit. A network administrator adds this command to router R1: ip route 192.168.2.0

255.255.255.0 S0/0/0. What is the result of adding this command?

This route is automatically propagated throughout the network.

The traffic for network 172.16.1.0 is forwarded to network 192.168.2.0.

A static route is established.

The traffic for all Class C networks is forwarded to 172.16.1.2.


1correctnessof response

2 points for Option 30 points for any other option

2


2.5.1 Configuring a Static Route with an Exit Interface

5

Refer to the exhibit. How many routes are ultimate routes?


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3

4

5

7


1correctness of

response





8.1.3 Level 1 Routes

6

Refer to the exhibit. Which path will traffic from the 172.16.1.0/24 network take to ge

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 AB


1correctness of

response




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3.3.3 Load Balancing

7

Refer to the exhibit. Packets destined to which two networks will require the router t

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


1correctness of

response



0 points if more options are selectedthan required.

2



2.3.3 Cisco Discovery Protocol (CDP)

8


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Refer to the exhibit. The router receives a packet that is destined for 192.168.5.79. Howrouter handle this packet?

It will forward the packet via the FastEthernet0/0 interface.

It will forward the packet via the Serial0/0/0 interface.

It will forward the packet via the Serial0/0/1 interface.

It will drop the packet.


1correctness

of response





2.6.2 Default Static Route

9

Refer to the exhibit. What is the meaning of the highlighted value 120?

It is the metric that is calculated by the routing protocol.

It is the value that is used by the DUAL algorithm to determine the bandwidth for t

It is the administrative distance of the routing protocol.

It is the hold-down time, measured in seconds, before the next update.


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2


5.3.1 Verifying RIP: show ip route

10 When presented with multiple valid routes to a destination, what criteria does a ro

determine which routes to add to the routing table?The router selects the routes with the best metric. All routes that have the sam

metric are added to the routing table.

The router first selects routes with the lowest administrative distance. The resroutes are then prioritized by metric and the routes with the best metric are ad

routing table.

The router selects the routes with the lowest administrative distance. All routesame lowest administrative distance are added to the routing table.

The router installs all routes in the routing table but uses the route with the be

most when load balancing.


1correctness of

response



2



3.4.1 Purpose of Administrative Distance

11 A router has learned two equal cost paths to a remote network via the EIGRP and

protocols. Both protocols are using their default configurations. Which path to the

network will be installed in the routing table?

the path learned via EIGRP

the path learned via RIPthe path with the highest metric value

both paths with load balancing



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1correctness of

response


0 points for any other

option

2


9.1.8 Administrative Distance

12 Which two statements are true for link-state routing protocols? (Choose two.)

Routers that run a link-state protocol can establish a complete topology of th

Routers in a multipoint network that run a link-state protocol can exchange rtables.

Routers use only hop count for routing decisions.

The shortest path first algorithm is used.

Split horizon is used to avoid routing loops.


Value

1correctness of

response

Option 1 and Option 4 are correct.1 point for each correct option.

0 points if more options are selected

than required.

2



10.1.1 Link-State Routing Protocols

13

Refer to the exhibit. Which three statements are true of the routing table for Router1? (C

three.)

The route to network 172.16.0.0 has an AD of 156160.


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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 defa

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.



Option 3, Option 4, and Option 6 are correct.

1 point for each correct option.0 points if more options are selected than

required.

3



8.1.2 Routing Table Entries

14

Refer to the exhibit. A device is required to complete the connection between router R1

WAN. Which two devices can be used for this? (Choose two.)

a CSU/DSU device

a modem

an Ethernet switch

a hub

a bridge


1 correctnessof response


1 point for each correct option.0 points if more options are selected thanrequired.

2




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the Cisco001 password and the Cisco123 passwords


1

correctness of

response


0 points for any other option 2



1.2.2 Basic Router Configuration

17 When connecting two devices, which situation would normally require the use of cable?

connecting a host to a switch

connecting a switch to a router

connecting a switch to a switch

connecting a host to a router console port


1correctness of

response



option

2


2.1.3 Examining the Connections of the Router

18


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Refer to exhibit. A company network engineer enters the following commands in the ro

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 no

static route to the 10.1.1.0 network. All R1 and R2 interfaces are correctly addressed pe

graphic. What is a logical next step that the engineer could take in order to make the stadisplay 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 configuratio


1correctness

of response




1.5.1 Cabling a Network and Basic Router Configuration

19


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Refer to the exhibit. The show cdp neighbors command was run on one of the devices

Based on this information, which two facts can be determined? (Choose two.)

The command was run on the router.

ABCD is a non- CISCO device.

Layer 3 connectivity between two devices exists.

ABCD supports routing capability.

ABCD is connected to the Fa0/0 interface of the neighboring device.


1correctness

of response



0 points if more options are selected than required.

2



2.3.4 Using CDP for Network Discovery

20

Refer to the exhibit. The network administrator has run the following command on R1.

R1(config)# ip route 192.168.2.0 255.255.255.0 172.16.1.2

What is the result of running this command?

Traffic for network 192.168.2.0 is forwarded to 172.16.1.2.

This route is automatically propagated throughout the entire network.

Traffic for all networks is forwarded to 172.16.1.2.

The command invokes a dynamic routing protocol for 192.168.2.0.


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2


11.2.3 The network Command

21 The network administrator configures the router with the ip route 172.16.1.0 255

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


1correctness of

response



option

2



1.5.2 Basic Router Configuration

22

Refer to the exhibit. The command ip route 0.0.0.0 0.0.0.0 S0/0/0 is run on router R2. W

two results of this command? (Choose two.)

A static route will be updated in the routing table.The traffic from the Internet will be directed to R2.

The traffic from the source network 172.16.0.0/22 will be blocked.

The route will be specified as the default route for all networks not defined in the ro

All the broadcasts will be forwarded via the S0/0/0 interface of R2.


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1 point for each correct option.0 points if more options are selected than required.

2


2.7.3 Solving the Missing Route

23

Refer to the exhibit. Hosts on the 192.168.1.0 network cannot communicate with hosts 172.16.1.1 network. The network administrator has run the show ip route command on

What could be the cause of this problem?

The FastEthernet interface on R1 is disabled.Autosummarization is enabled on R1.

The serial interface S0/0/0 of R1 is administratively down.

No static route or routing protocol is configured.




2


2.6.2 Default Static Route

24 A company is using static routes that are configured with an administrative distan

all routers in the network. The network administrator decides to introduce a dynamprotocol to reduce the manual configurations for the static routes. Which option id


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correct procedure for the dynamic routing to take place in the network?

The static routes and the dynamic routes will have the traffic alternate betwee

The static routes will be automatically removed once the dynamic routing is c

The static routes will be automatically updated with the next hop IP address o

dynamic routing is configured.

The static routes must be manually removed from all routers in order for the droutes to be installed in the routing table.


1correctness of

response



option

2



2.5.2 Modifying Static Routes

25

Refer to the exhibit. An administrator is adding a new subnet of 50 hosts to R3. Which

address should be used for the new subnet that provides enough addresses while wasti

minimum of addresses?

192.168.1.0/24

192.168.1.48 /28

192.168.1.32/27

192.168.1.64/26


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1correctness of

response





6.1.1 Classful IP Addressing

26

Refer to the exhibit. What summarization should R2 use to advertise its LAN networks

172.16.0.0/24

172.16.4.0/22

172.16.4.0/23

172.16.4.0/24


1correctness

of response




6.3.2 Calculating Route Summarization

27


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Refer to the exhibit. Host A is unable to access the Internet. What is the reason for this?

The IP address of host A is incorrect.

The default gateway of host A is incorrect.The Fa0/1 interfaces of the two routers are configured for different subnets.

The subnet mask for the Fa0/0 interface of R1 is incorrect.


1correctness

of response





1.2.1 Implementing Basic Addressing Schemes

28

Refer to the exhibit. Which host has a combination of IP address and subnet mask on t


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network as Fa0/0 of Router1?

host A

host B

host C

host D


1correctness of

response





1.2.1 Implementing Basic Addressing Schemes29 A network administrator must use the subnet 172.16.128.0/18 to create 6 addition

each containing up to 2000 hosts for local LANs. Which subnet mask should the

administrator use to create the new subnets?

255.255.224.0

255.255.240.0

255.255.248.0

255.255.252.0


1correctness of

response

2 points for Option 30 points for any other

option

2



6.2.2 VLSM and IP Addresses

30 How will a router that is configured with a classless routing protocol determine th

mask that should be assigned to routes that are learned from neighboring classlessThe subnet mask that is included in the routing updates will be used.

The subnet mask of the interface that receives the update will be used.

The subnet mask that is specified in the networkcommand will be used.

The class of the network in the update will determine the subnet mask that is


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2


6.1.4 Classless Routing Protocol

31

Refer to the exhibit. When troubleshooting a network, it is important to interpret the ou

various router commands. On the basis of the exhibit, which three statements are true?

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.



Option 1, Option 4, and Option 6 are correct.1 point for each correct option.0 points if more options are selected than required.

3



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3.5.1 Identifying Elements of the Routing Table

32 Which statement correctly describes a feature of RIP?

RIP is a link-state routing protocol.

RIP uses only one metrichop count for path selection.

Advertised routes with hop counts greater than 10 are unreachable.

Messages are broadcast every 10 seconds.





2


5.1.2 RIPv1 Characteristics and Message Format

33

Refer to the exhibit. The network is using the RIPv2 routing protocol. If network 10.0down, what mechanism will prevent Router1 from advertising false routing informatio

Router2?

triggered updates

poison reverse

holddown timers

split horizon


1correctness of

response





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4.4.5 Split Horizon Rule

34

Refer to the exhibit. While trying to diagnose a routing problem in the network, the net

administrator runs the debug ip rip command. What can be determined from the outpu

command?

The router is broadcasting RIP updates.

The router will be unable to ping 192.168.1.2.

The router is directly connected to network 172.16.1.0 /24.

The router has two interfaces that participate in the RIP process.




2



7.4.1 Verification and Troubleshooting Commands

35


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Refer to the exhibit. R1 and R2 are adjacent routers both running RIP. All interfaces onrouters are correctly configured and operational. Both routers are configured to include

connected interfaces in routing updates. R2 is not showing any routes from R1 in the ro

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.


1correctness

of response


0 points for any other option

2


7.2.1 Enabling and Verifying RIPv2

36


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Refer to the exhibit. When the show cdp neighbors command is issued from router C

devices will be displayed in the output?B, D

A, B, D

D, SWH-2

SWH-1, A, B

SWH-1, SWH-2

A, B, D, SWH-1, SWH-2




2


2.3.4 Using CDP for Network Discovery

37


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Refer to the exhibit. The routers in the exhibit are running the EIGRP routing protocol.

statement is true regarding how packets will travel from the 172.16.1.0/16 network to th

192.168.200.0/24 network?

The router chooses the first path that it learned and installs only that route in the rou

The router chooses the path with the lowest administrative distance and installs onlin the routing table.The router chooses the highest routing ID based on the advertised network IP addre

installs only that route in the routing table.

The router installs all the equal cost paths in the routing table but sends packets outholding 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 c

balancing to send packets out multiple exit interfaces.


1 correctnessof response


2



1.4.2 Best Path and Metric

38 Which three statements describe the operation of routing with EIGRP? (Choose

As new neighbors are discovered, entries are placed in a neighbor table.

If the feasible successor has a higher advertised cost than the current success

then it becomes the primary route.If hello packets are not received within the hold time, DUAL must recalcula

topology.

The reported distance is the distance to a destination as advertised by a neigh

EIGRP maintains full knowledge of the network topology in the topology ta

exchanges full routing information with neighboring routers in every update

EIGRP builds one routing table that contains routes for all configured routed


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Value

1 correctness ofresponse

Option 1, Option 3, and Option 4 arecorrect.

1 point for each correct option.0 points if more options are selectedthan required.

3



9.1 Introduction to EIGRP

39 Which statement correctly describes a feasible successor in EIGRP?

It is a primary route that is stored in the routing table.

It is a backup route that is stored in the routing table.

It is a primary route that is stored in the topology table.

It is a backup route that is stored in the topology table.


1correctness of

response



2



9.4.4 Topology Table: Successor and Feasible Successor

40


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Refer to the exhibit. Routers R1 and R2 are directly connected via their serial interfacboth running the EIGRP routing protocol. R1 and R2 can ping the directly connected

interface of their neighbor, but they cannot form an EIGRP neighbor adjacency.

What action should be taken to solve this problem?

Enable the serial interfaces of both routers.

Configure EIGRP to send periodic updates.

Configure the same hello interval between the routers.

Configure both routers with the same EIGRP process ID.


1correctness of

response





9.2.2 Autonomous Systems and Process IDs

41

Refer to the exhibit. What information can be determined from the displayed output?


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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 192.168.1

R2 S0/0/1 interface.


1correctness

of response





9.5.1 The Null0 Summary Route

42

Refer to the exhibit. Which two statements are true based on the exhibited output? (Cho

All routes are stable.

Each route has one feasible successor.

The serial interface between the two routers is down.

The administrative distance of EIGRP has been set to 50.

The show ip eigrp topology command has been run on R1.



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1correctness

of response



0 points if more options are selected than required.

2


9.5.2 Disabling Automatic Summarization

43

Refer to the exhibit. R2 is configured correctly. The network administrator has configurshown. Which two facts are true about the forwarding of route information by R1? (Cho

R1 will forward the route information for subnet 192.168.100.0/30.

R1 will not forward route information for subnet 192.168.100.4/30.R1 will forward the route information with an administrative distance set to 50.

R1 will forward the summarized route information for network 192.168.100.0/24.

R1 will forward route information for subnet 10.10.10.0/30 out the serial interface.




1 point for each correct option.0 points if more options are selected than required.

2


9.5.2 Disabling Automatic Summarization

44


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Refer to the exhibit. A network administrator is trying to determine why router JAX h

routes in its routing table. All routers are configured for OSPF area 0. From the JAX r

administrator is able to ping its connected interfaces and the Fa0/1 interface of the ORno other router interfaces. What is a logical step that the network administrator should

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.




2



10.1.6 Building the Link-State Packet

45


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Refer to the exhibit. R1 is configured properly for a single area OSPF, and R2 has been

installed in the network. Which set of commands is required to configure a single area O

the networks that are connected to R2?R2(config)# router ospf 1

R2(config-router)# network 192.168.2.0 0.0.0.255 area 0

R2(config-router)# network 10.1.1.0 0.0.0.3 area 0R2(config)# router ospf 1


R2(config)# router ospf 2R2(config-router)# network 10.1.1.0 0.0.0.3 area 0

R2(config)# router ospf 1


R2(config-router)# network 10.1.1.0 0.0.0.3 area 1R2(config)# router ospf 1






2




46

Refer to the exhibit. A network administrator has configured OSPF using the following

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


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1correctness

of response






47 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 requ


1correctness of

response



2



11.1.3 OSPF Packet Types48 Two routers need to be configured within a single OSPF area. Which two compo

to be configured on both routers to achieve this? (Choose two.)

the same process ID

the same area ID

network addresses and wildcard masks

the same router ID

the same loop back address

Observable Description MaxValue

1correctness of

response

Option 2 and Option 3 are correct.1 point for each correct option.

0 points if more options are selected

than required.

2


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50

Refer to the exhibit. The IP addresses on all interfaces on router R1 were configured be

OSPF protocol had been enabled on the router. No OSPF router ID was manually confiWhich IP address will be selected by the router as an OSPF router ID?

10.10.10.1

172.16.1.1

172.16.2.1

192.168.1.1

192.168.100.1


1correctness

of response





11.2.4 OSPF Router ID

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