CCNA 2 Chapter 5 V4.0 Answers

1.

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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?

Router1(config-router)# no router rip Router1(config-router)# network 192.168.10.0

Router1(config-router)# no network 192.168.10.0

Router1(config-router)# passive-interface fastethernet 0/0

Router1(config-router)# passive-interface serial 0/0/0

 

2.

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Refer to the output from the show ip route command. What can be concluded from the output of this router command?

A preferred route to the destination has not been set.

There are two equal cost paths to network 1.0.0.0.

Both interfaces are being used equally to route traffic.

A variance must be set to load-balance across multiple paths.

 

 

3.

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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?

30 seconds

90 seconds

155 seconds

180 seconds

255 seconds

 

4. What is the default update period in seconds for the RIP routing protocol?

10

12

15

20

30

60

 

5. Which of the following is considered a limitation of RIP v1?

RIP v1 does not send subnet mask information in its updates.

RIP v1 is not widely supported by networking hardware vendors.

RIP v1 consumes excessive bandwidth by multicasting routing updates using a Class D address.

RIP v1 requires enhanced router processors and extra RAM to function effectively.

RIP v1 does not support load balancing across equal-cost paths.

RIP v1 authentication is complicated and time-consuming to configure.

 

6. Which command will display RIP activity as it occurs on a router?

debug ip rip

show ip route

show ip interface

show ip protocols

debug ip rip config

show ip rip database

 

7. What are three characteristics of the RIPv1 routing protocol? (Choose three.)

supports the use of VLSM

uses hop count as a metric

considers a metric of 16 as infinity

has an administrative distance of 110 by default

includes the destination IP address and subnet mask in routing updates

calculates metrics using the Bellman Ford algorithm

 

8.

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Which of the following would be the correct command sequence to enable RIP on Router B for all connected networks?

RouterB# router rip
RouterB(router)# network 210.36.7.0
RouterB(router)# network 220.17.29.0
RouterB(router)# network 211.168.74.0

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

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

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

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.

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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?

All routers have all routes in their routing table.

All routers have all /30 routes, but do not have /24 routes in their routing table.

All routers have all /30 routes. Routers A and E also have some of the /24 routes in their routing table.

All routers have all /30 routes. Routers B and D also have some of the /24 routes in their routing table.

Routers A and E have all routes. Routers B and D have only /30 routes in their routing table.

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?

The router will reject the command.

A route to the host address will be added to outgoing RIP updates.

A route to the host address will be added to the routing table.

All interfaces in the same classful network as the configured address will be included in the RIPv1 routing process.

 

11.

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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?

10.1.0.0/16

10.1.0.0/8

10.0.0.0/16

10.0.0.0/8

 

12.

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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).

R 192.168.2.0/24 [120/1]

C 192.168.2.0/24 [120/1]

R 10.10.3.0/24 [120/0]

C 10.10.3.0/24 [120/1]

R 10.10.1.0/24 [120/2]

R 10.10.1.0/24 [120/3]

 

13.

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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?

whether all routes in the network have been properly added to the routing table

routing protocol configuration in use for IP on this router

operational status of routing protocols in use on all routers in the network

routing metric of each network that is listed in the routing table

 

14.

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Refer to the exhibit. What can be concluded from the routing table output of router B?

A static default route has been configured on B.

The default-information originate command has been entered on A.

All traffic that is destined for 192.168.1.1 will be sent to address 0.0.0.0.

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?

3

12

20

30

120

 

16.

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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?

only Router1

only the gateway router

all routers in the network

only the routers with LANs needing Internet access

 

17.

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Refer to the exhibit. Router1 is running RIPv1. What command was entered into Router1 to configure the gateway of last resort?

no auto-summary

ip default-network 0.0.0.0

ip default-gateway 10.0.0.0

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?

RouterB(config)# router rip RouterB(config-router)# shutdown

RouterB(config)# router rip RouterB(config-router)# network no 192.168.2.0

RouterB(config)# no router rip

RouterB(config)# router no rip

 

19. Which two statements are true regarding the characteristics of RIPv1? (Choose two).

It is a distance vector routing protocol.

It advertises the address and subnet mask for routes in routing updates.

The data portion of a RIP message is encapsulated into a TCP segment.

The data portion of a RIP message is encapsulated into a UDP segment.

It broadcasts updates every 15 seconds.

It allows a maximum of 15 routers in the routing domain.

 

20.

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Refer to the exhibit. RIPv1 is running on all three routers. All interfaces have been correctly configured with addresses in the address ranges that are shown. Which route would you see in the routing table on router CHI if the routers are configured with the commands that are displayed in the exhibit?

192.168.0.4/30

192.168.0.0/24

192.168.0.0/16

192.168.0.32/27

 

21. Refer to the exhibit. The Ethernet interface on Router2 goes down and the administrator notices that the route is still valid in the routing table of Router1. How much longer will it take for Router1 to mark the route invalid by setting the metric to 16?

30 seconds

90 seconds

155 seconds

180 seconds

255 seconds

CCNA 2 Chapter 4 V4.0 Answers

1.

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What actions will occur after RouterA loses connectivity to network 114.125.16.0? (Choose two.)

RouterB will include network 123.92.76.0 and 136.125.85.0 in its update to RouterA.

During the next update interval, RouterB will send a RIP update out both ports that includes the inaccessible network.

During the next update interval, RouterC will send an update to RouterB stating that network 114.125.16.0 is accessible in 2 hops.

Router C will learn of the loss of connectivity to network 114.125.16.0 from RouterB.

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?

places it immediately in the routing table

adjusts the metric for the new route to show the added distance for the route

advertises this route out all other interfaces except the one that it came in on

sends a ping packet to verify that the path is a feasible route

 

 

3.

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Refer to the exhibit. If all routers are using RIP, how many rounds of updates will occur before all routers know all networks?

1

2

3

4

5

6

 

4. Which of the following methods does split horizon use to reduce incorrect routing information?

Routing updates are split in half to reduce the update time.

Information learned from one source is not distributed back to that source.

New route information must be learned from multiple sources to be accepted.

The time between updates is split in half to speed convergence.

New route information is suppressed until the system has converged.

 

5.

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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?

The Holddown timer will wait to remove the route from the table for 60 seconds.

The Invalid timer will mark the route as unusable if an update has not been received in 180 seconds.

The Update timer will request an update for routes that were learned from Router B.

The Hello timer will expire after 10 seconds and the route will be flushed out of the routing table.

 

6.

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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?

split horizon

error condition

hold-down timer

route poisoning

count to infinity

 

7. Which two statements describe EIGRP? (Choose two.)

EIGRP can be used with Cisco and non-Cisco routers.

EIGRP sends triggered updates whenever there is a change in topology that influences the routing information.

EIGRP has an infinite metric of 16.

EIGRP sends a partial routing table update, which includes just routes that have been changed.

EIGRP broadcasts its updates to all routers in the network.

 

8. Which event will cause a triggered update?

an update routing timer expires

a corrupt update message is received

a route is installed in the routing table

the network is converged

 

9. Which of the following statements are correct about RIP?

uses a broadcast to update all other routers in the network every 60 seconds

uses a multicast address to update other routers every 90 seconds

will send out an update if there is a failure of a link

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).

updates are broadcast only when there are changes to the topology

updates are broadcast at regular intervals

broadcast are sent to 0.0.0.0

broadcasts are sent to 255.255.255.255

updates contain the entire network topology

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.)

EIGRP uses periodic updates.

EIGRP only updates affected neighbors.

EIGRP uses broadcast updates.

EIGRP updates are partial.

EIGRP uses the efficient Bellman-Ford algorithm.

 

12. Which two conditions are most likely to cause a routing loop? (Choose two.)

random jitter

implementation of classful addressing

inconsistent routing tables

incorrectly configured static routes

a network converging too quickly

 

13. What metric does the RIP routing protocol consider to be infinity?

0

15

16

224

255

 

14. What does the RIP holddown timer do?

ensures an invalid route has a metric of 15

prevents a router from sending any updates after it has introduced a routing loop into the network

ensures every new route is valid before sending an update

instructs routers to ignore updates, for a specified time or event, about possible inaccessible routes

 

15.

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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 protocol?

The path will be router A -> router B -> router C -> router E.

The path will be router A -> router D -> router E

Router A will load balance between the router A -> router D -> router E and router A -> router B -> router C -> router E path

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 happen?

They will share all routes saved in NVRAM prior to the power loss with their directly connected neighbors.

They will multicast hello packets to all other routers in the network to establish neighbor adjacencie

They will send updates that include only directly connected routes to their directly connected neighbor

They will broadcast their full routing table to all routers in the networ

 

17. What is a routing loop?

a packet bouncing back and forth between two loopback interfaces on a route

a condition where a return path from a destination is different from the outbound path forming a “loop”

a condition where a packet is constantly transmitted within a series of routers without ever reaching its intended destination

the distribution of routes from one routing protocol into another

 

18. Which statement is true regarding cisco’s RIP_JITTER variable?

It prevents the synchronization of routing updates by buffering the updates as they leave the router interface

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 update

It prevents the synchronization of routing updates by causing the router to skip every other scheduled update time

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).

RIPv1

EIGRP

OSPF

IS-IS

RIPv2

 

20. Which of the following can exist in a distance vector network that has not converged? (Choose three).

routing loops

inconsistent traffic forwarding

no traffic forwarding until system converges

inconsistent routing table entries

routing table updates sent to wrong destinations

 

21. What is the purpose of the TTL field in the IP header?

used to mark routes as unreachable in updates sent to other routers

prevents regular update messages from reinstating a route that may have gone bad

prevents a router from advertising a network through the interface from which the update came

limits the time or hops that a packet can traverse through the network before it should be discarded

defines a maximum metric value for each distance vector routing protocol by setting a maximum hop count

CCNA 2 Chapter 3 V4.0 Answers

1. Which two statements correctly describe the concepts of administrative distance and metric? (Choose two.)

Administrative distance refers to the trustworthiness of a particular route.
router first installs routes with higher administrative distances.

The value of the administrative distance can not be altered by the network administrator.

Routes with the smallest metric to a destination indicate the best path.

The metric is always determined based on hop count.

The metric varies depending which Layer 3 protocol is being routed, such as IP or IPX.

 

2.

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Refer to the exhibit. Which statement correctly describes how R1 will determine the best path to R2?

R1 will install a RIP route using network A in its routing table because the administrative distance of RIP is higher than EIGRP.

R1 will install a RIP route using network A in its routing table because the path cost from RIP is lower than EIGRP.

R1 will install an EIGRP route using network B in its routing table because the administrative distance of EIGRP is lower than RIP.

R1 will install an EIGRP route using network B in its routing table because the path cost from EIGRP is lower than RIP.

R1 will install an EIGRP route and a RIP route in its routing table and load balance between them.

 

 

3. Which two statements are true regarding classless routing protocols? (Choose two.)

* sends subnet mask information in routing updates

sends complete routing table update to all neighbors

is supported by RIP version 1

* allows for use of both 192.168.1.0/30 and 192.168.1.16/28 subnets in the same topology

reduces the amount of address space available in an organization

 

4. Which command would the network administrator issue to determine if load balancing is in effect on a router?

show ip protocols

show ip route

show ip interface brief

show ip interface

 

5. Which statement is true regarding routing protocols?

RIP uses hop count and bandwidth as the metric for path selection and sendsupdates periodically.

OSPF is a Cisco proprietary protocol that sends updates triggered by topology changes.

EIGRP uses DUAL to calculate the shortest path and can be configured to do unequal cost load balancing.

BGP is a path vector interior routing protocol.

 

6. Which two conditions would create a setting where the use of a distance-vector routing protocol would be efficient? (Choose two.)

the network requires a special hierarchical design

fast convergence of the network is crucial

the network is using a hub and spoke topology

the network is using a flat design

there are more than 15 hops between the most distant routers

 

7. What is the purpose of a routing protocol?

It is used to build and maintain ARP tables.

It provides a method for segmenting and reassembling data packets.

It allows an administrator to devise an addressing scheme for the network.

It allows a router to share information about known networks with other routers.

It provides a procedure for encoding and decoding data into bits for packet forwarding.

 

8. Which of the following best describes the operation of distance vector routing protocols?

They use hop count as their only metric.

They only send out updates when a new network is added.

They send their routing tables to directly connected neighbors.

They flood the entire network with routing updates.

 

9. Which of the following is associated with link-state routing protocols?

low processor overhead

poison reverse

routing loops

split horizon

shortest-path first calculations

 

10. Why is fast convergence desirable in networks that use dynamic routing protocols?

Routers will not allow packets to be forwarded until the network has converged.

Hosts are unable to access their gateway until the network has converged.

Routers may make incorrect forwarding decisions until the network has converged.

Routers will not allow configuration changes to be made until the network has converged.

 

11. Which of the following conditions must be met in order for a network to have converged?

The routers in the network are operating with dynamic routing protocols.

The routers in the network are operating with compatible versions of IOS.

The routers in the network are operating with the same routing tables.

The routers in the network are operating with consistent routing knowledge.

 

12. Which two statements are true regarding metrics? (Choose two.)

RIP uses bandwidth as a metric.

OSPF uses delay as a metric.

EIGRP uses bandwidth as a metric.

OSPF uses cost based on bandwidth as a metric.

RIP uses delay as a metric.

EIGRP uses hop count only as a metric.

 

13. Which two statements are true regarding the advantages of the use of static routes? (Choose two).

increased security

reduced effort in configuring routes

the administrator maintains control over routing

easier to implement in a growing network

reduces the chance of routing errors

increased router resource usage

 

14. The following line of code is displayed in a routing table:
R 209.165.201.0/24 [120/2] via 192.168.252.2, 00:00:16, S0/0/0
What can be concluded from this output?

A packet destined for host 192.168.252.2 will be forwarded out the interface connected to network 209.165.201.0/24.

The value, 120, is used to determine the best path when a router has more than one routing protocol configured for the same destination network.

This route was manually configured using the ip route command.

192.168.252.2 is an interface on the router that produced this output.

 

15. What will be the result of the following commands?

ORL(config)# interface fastethernet 0/0
ORL(config-if)# ip address 172.16.3.1 255.255.255.0
ORL(config-if)# no shutdown

The 172.16.3.0 network will be routed by any dynamic routing protocol automatically.

A routing table entry is made to the 172.16.3.0 network with a code of “C”.

A static route is required to route traffic to the 172.16.3.0 network.

The commands will be saved to the startup-configuration.

 

16. An engineer creates a static route by entering the Router(config)# ip route 10.0.0.0 255.255.255.0 192.168.1.2 command. What can be concluded about this route?

The administrative distance of this route is 1.

192.168.1.2 is the address of an interface on this router.

This route will display as a directly connected network in the routing table.

Packets with a destination IP address of 192.168.1.2 will be forwarded to the 10.0.0.0/24 network first.

 

17.

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Refer to the exhibit. Router1 and Router2 are running EIGRP. All interfaces are operational and packets can be forwarded between all networks. What information will be found in the routing table for Router1?

Router1 will have 6 directly connected networks.

The administrative distance of the route to network 172.16.0.0 will be 90.

The metric for routes to 172.16.0.0 will be 1.

The interface that is used to forward packets to 172.16.0.0 will always be the S0/1 interface.

 

18. The following line of code is present in the routing table:
O 10.16.1.0/27 [110/129] via 192.168.1.5, 00:00:05, Serial0/0/1
What does the number 129 indicate in this output?

The cost for this link has a value of 129.

The clock rate on this serial interface is set to 129,000.

The next-hop router is 129 hops away from this router.

This route has been updated 129 times in this routing table.

 

19. A growing medium-sized manufacturing company recently began to have routing instability issues. The company uses static routes and has a mixture of over 30 Cisco and non-Cisco routers. The network administrator has decided to convert the network to dynamic routing. What characteristics of protocols should be considered in this selection process?

Distance vector routing protocols, such as RIP, converge more quickly than do link-state routing protocols.

EIGRP can be used on all of the routers in the company.

OSPF can be used between the routers.

An exterior routing protocol, such as BGP, is recommended for growing companies.

 

20.

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Refer to the exhibit. If RIP is the routing protocol, what is the value of the metric from router A to network 192.168.5.0/24?

3

4

56

624

724

 

21. A router learns two paths with equal metrics to a destination network via the RIP routing protocol. How will the router handle packets to the destination network?

The router will install the first route it learned into the routing table.

The router will install both routes in the routing table and load balance between the two.

The router will put the first route in the routing table, and denote the second route as a backup route.

The router will pick the path with the higher bandwidth and will place it in the routing table.

 

22. When multiple routing protocols have a route to the same destination network, what determines which route is installed in the routing table?

best metric

lowest hop count

greatest available bandwidth

lowest administrative distance

lowest cost

CCNA 2 Chapter 2 V4.0 Answers

1. A static route that points to the next hop IP will have what administrative distance and metric in the routing table?

administrative distance of 0 and metric of 0

administrative distance of 0 and metric of 1

administrative distance of 1 and metric of 0

administrative distance of 1 and metric of 1

 

2. What address can be used to summarize networks 172.16.1.0/24, 172.16.2.0/24, 172.16.3.0/24, and 172.16.4.0/24?

172.16.0.0/21

172.16.1.0/22

172.16.0.0 255.255.255.248

172.16.0.0 255.255.252.0

 

 

3.

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The routers in the diagram use the subnet assignments shown. What is the most efficient route summary that can be configured on Router3 to advertise the internal networks to the cloud?

192.1.1.0/26 and 192.1.1.64/27

192.1.1.128/25

192.1.1.0/23 and 192.1.1.64/23

192.1.1.0/24

192.1.1.0/25

192.1.1.0/24 and 192.1.1.64/24

 

4.

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Refer to the exhibit. What is the significance of the /8 in the route to the 10.0.0.0 network?

It indicates that there are 8 hops between this router and the 10.0.0.0 network.

It represents the time, in milliseconds, it takes for a ping to reply when sent to the 10.0.0.0 network.

It indicates that there are 8 subnets in the destination network to which the router can forward packets.

It indicates the number of consecutive bits, from the left, in the destination IP address of a packet that must match 10.0.0.0 to use that route.

 

5.

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Refer to the exhibit. How will packets destined to the 172.16.0.0 network be forwarded?

Router1 will perform recursive lookup and packet will exit S0/0.

Router1 will perform recursive lookup and packet will exit S0/1.

There is no matching interface associated with network 172.16.0.0 so packets will be dropped.

There is no matching interface associated with network 172.16.0.0 so packets will take gateway of last resort and exit out S0/2.

 

6. A network administrator enters the following command into Router1: ip route 192.168.0.0 255.255.255.0 S0/1/0. Router1 then receives a packet that is destined for 192.168.0.22/24. After finding the recently configured static route in the routing table, what does Router1 do next to process the packet?

drops the packet because the destination host is not listed in the routing table

looks up the MAC address of the S0/1/0 interface to determine the destination MAC address of the new frame

performs a recursive lookup for the IP address of the S0/1/0 interface before forwarding the packet

encapsulates the packet into a frame for the WAN link and forwards the packet out the S0/1/0 interface

 

7.

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Refer to the exhibit. Given the output in the exhibit, how would a clock rate be determined for this link?

The rate would be negotiated by both routers.

A rate would not be selected due to the DCE/DTE connection mismatch.

The rate configured on the DTE determines the clock rate.

The rate configured on the DCE determines the clock rate.

 

8.

CCNA2Chapter2V4.0Answers5 thumb CCNA 2 Chapter 2 V4.0 Answers

Refer to the exhibit. Which set of commands will configure static routes that will allow the WinterPark and the Altamonte routers to deliver packets from each LAN and direct all other traffic to the Internet?

WinterPark(config)# ip route 0.0.0.0 0.0.0.0 192.168.146.1
Altamonte(config)# 
ip route 10.0.234.0 255.255.255.0 192.168.146.2
Altamonte(config)# ip route 0.0.0.0 0.0.0.0 s0/1

WinterPark(config)# ip route 0.0.0.0 0.0.0.0 192.168.146.1
Altamonte(config)# ip route 10.0.234.0 255.255.255.0 192.168.146.2
Altamonte(config)# ip route 198.18.222.0 255.255.255.255 s0/1

WinterPark(config)# ip route 172.191.67.0 255.255.255.0 192.168.146.1
WinterPark(config)# ip route 0.0.0.0 0.0.0.0 192.168.146.1
Altamonte(config)# ip route 10.0.234.0 255.255.255.0 192.168.146.2

WinterPark(config)# ip route 172.191.67.0 255.255.255.0 192.168.146.1
Altamonte(config)# ip route 10.0.234.0 255.255.255.0 192.168.146.2
Altamonte(config)# ip route 0.0.0.0 0.0.0.0 s0/0

 

9. Hosts on two separate subnets cannot communicate. The network administrator suspects a missing route in one of the routing tables. Which three commands can be used to help troubleshoot Layer 3 connectivity issues? (Choose three.)

ping

show arp

traceroute

show ip route

show interface

show cdp neighbor detail

 

10.

CCNA2Chapter2V4.0Answers6 thumb CCNA 2 Chapter 2 V4.0 Answers

Refer to the exhibit. A company network engineer is assigned to establish connectivity between the two Ethernet networks so that hosts on the 10.1.1.0/24 subnet can contact hosts on the 10.1.2.0/24 subnet. The engineer has been told to use only static routing for these company routers. Which set of commands will establish connectivity between the two Ethernet networks?

R1(config)# ip route 10.1.2.0 255.255.255.0 192.168.0.1
R2(config)# ip route 10.1.1.0 255.255.255.0 192.168.0.2

R1(config)# ip route 10.1.2.0 255.255.255.0 192.168.0.2
R2(config)# ip route 10.1.1.0 255.255.255.0 192.168.0.1

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

R1(config)# ip route 10.1.1.0 255.255.255.0 192.168.0.1
R2(config)# ip route 10.1.2.0 255.255.255.0 192.168.0.2

R1(config)# ip route 0.0.0.0 0.0.0.0 10.1.2.1
R2(config)# ip route 0.0.0.0 0.0.0.0 10.1.1.1

 

11. Which of the following are displayed by the Router# show cdp neighbors command? (Choose three.)

load

platform

reliability

holdtime

local interface

 

12.

CCNA2Chapter2V4.0Answers7 thumb CCNA 2 Chapter 2 V4.0 Answers

Refer to the exhibit. What two commands are required to provide connectivity between the 192.168.1.0 and 10.0.0.0 networks without requiring recursive lookup? (Choose two.)

A(config)# ip route 10.0.0.0 255.0.0.0 s 0/1/0

A(config)# ip route 10.0.0.0 255.0.0.0 172.16.40.2

A (config)# ip route 10.0.0.0 255.0.0.0 s 0/0/0

B(config)# ip route 192.168.1.0 255.255.255.0 s 0/0/0

B (config)# ip route 192.168.1.0 255.255.255.0 172.16.40.1

B(config)# ip route 192.168.1.0 255.255.255.0 s 0/1/0

 

13.

CCNA2Chapter2V4.0Answers8 thumb CCNA 2 Chapter 2 V4.0 Answers

Refer to the exhibit. What two commands will change the next-hop address for the 10.0.0.0/8 network from 172.16.40.2 to 192.168.1.2? (Choose two.)

A(config)# no network 10.0.0.0 255.0.0.0 172.16.40.2

A(config)# no ip address 10.0.0.1 255.0.0.0 172.16.40.2

A(config)# no ip route 10.0.0.0 255.0.0.0 172.16.40.2

A(config)# ip route 10.0.0.0 255.0.0.0 s0/0/0

A(config)# ip route 10.0.0.0 255.0.0.0 192.168.1.2

 

14. What happens to a static route entry in a routing table when the outgoing interface is not available?

The route is removed from the table.

The router polls neighbors for a replacement route.

The route remains in the table because it was defined as static.

The router redirects the static route to compensate for the loss of the next hop device.

 

15. A router has one static route to each destination network. Which two scenarios would require an administrator to alter the static routes that are configured on that router? (Choose two.)

The destination network no longer exists.

The destination network is moved to a different interface on the same router.

The path between the source and destination is upgraded with a higher bandwidth link.

A topology change occurs where the existing next-hop address or exit interface is not accessible.

The remote destination network interface has to be down for 15 minutes of maintenance.

 

16. Why is it advisable to enter a next-hop IP address when creating a static route whose exit interface is an Ethernet network?

Adding the next-hop address eliminates the need for the router to do any lookups in the routing table before forwarding a packet.

In a multi-access network, the router cannot determine the next-hop MAC address for the Ethernet frame without a next-hop address.

Using a next-hop address in a static route provides a route with a lower metric.

In multi-access networks, using a next-hop address in a static route makes that route a candidate default route.

 

17. The output of the Router# show interfaces serial 0/1 command displays the following:
Serial0/1 is up, line protocol is down.
What is the most likely cause for the line protocol being down?

Serial0/1 is shutdown.

There is no cable connecting the routers.

The remote router is using serial 0/0.

No clock rate has been set.

 

18.

CCNA2Chapter2V4.0Answers9 thumb CCNA 2 Chapter 2 V4.0 Answers

Refer to the exhibit. Which static route should be configured on Router1 so that host A will be able to reach host B on the 172.16.0.0 network?

ip route 192.168.0.0 172.16.0.0 255.255.0.0

ip route 172.16.0.0 255.255.0.0 192.168.0.1

ip route 172.16.0.0 255.255.0.0 S0/0/1

ip route 172.16.0.0 255.255.0.0 S0/0/0

 

19. What two devices are responsible for converting the data from the WAN service provider into a form acceptable by the router? (Choose two).

the serial port of the router

a modem

a switch

the ethernet port of the router

a CSU/DSU device

a DTE device

 

20.

CCNA2Chapter2V4.0Answers10 thumb CCNA 2 Chapter 2 V4.0 Answers

Which of the following is true regarding CDP and the graphic shown?

CDP running on Router D will gather information about routers A, B, C, and E.

By default, Router A will receive CDP advertisements from routers B and C.

If routers D and E are running different routing protocols, they will not exchange CDP information.

Router E can use CDP to identify the IOS running on Router B.

 

21. Which two statements describe functions or characteristics of CDP? (Choose two.)

It starts up automatically and allows the device to detect directly connected neighbor devices that use CDP.

It operates at the network layer and allows two systems to learn about each other.

It creates a topology map of the entire network.

It allows systems to learn about each other even if different network layer protocols are configured.

It forwards advertisements about routes for faster convergence.

 

22. Which piece of information is available from examining the output of the command show ip interface brief?

Interface speed and duplex

Interface MTU

Errors

Interface MAC address

Interface IP address

CCNA 2 Chapter 1 V4.0 Answers

1. If a router cannot find a valid configuration file during the startup sequence, what will occur?

The startup sequence will reset.

The router will prompt the user for a response to enter setup mode.

The startup sequence will halt until a valid configuration file is acquired.

The router will generate a default configuration file based on the last valid configuration.

The router will monitor local traffic to determine routing protocol configuration requirements.

 

2.

CCNA2Chapter1V4.0Answers1 thumb CCNA 2 Chapter 1 V4.0 Answers

Refer to the exhibit. The network administrator has configured the router with the interface IP addresses shown for the directly connected networks. Pings from the router to hosts on the connected networks or pings between router interfaces are not working. What is the most likely problem?

The destination networks do not exist.

The IP addresses on the router interfaces must be configured as network addresses and not host addresses.

The interfaces must be enabled with the no shutdown command.

Each interface must be configured with the clock rate command.

 

 

3.

CCNA2Chapter1V4.0Answers2 thumb CCNA 2 Chapter 1 V4.0 Answers

Refer to the exhibit. What can be concluded from the routing table output in the exhibit? (Choose two.)

This router only has two interfaces.

The router interfaces are not operational yet.

This router is configured to forward packets to remote networks.

The FastEthernet0/0 and Serial0/0/0 interfaces of this router were configured with an IP address and the no shutdown command.

An IP packet received by this router with a destination address of 198.18.9.1 will be forwarded out of the Serial0/0/0 interface.

 

4.

CCNA2Chapter1V4.0Answers3 thumb CCNA 2 Chapter 1 V4.0 Answers

Refer to the exhibit. The frame shown in the exhibit was received by the router. The router interfaces are operational. How will the router process this frame? (Choose two.)

The router will change the source and destination IP address in the packet before forwarding the frame.

The router will change the frame type to one supported by the WAN link before forwarding the frame.

The router will use the destination MAC address to determine which interface to forward the packet.

The router will look up the MAC address of the S0/0/0 interface in the ARP table and add it to the frame before forwarding.

The frame was received on the Fa0/0 interface of the router and will be switched to the S0/0/0 interface.

The frame was received on the S0/0/0 interface of the router and will be switched to the Fa0/0 interface.

 

5. Passwords can be used to restrict access to all or parts of the Cisco IOS. Select the modes and interfaces that can be protected with passwords. (Choose three.)

VTY interface

console interface

Ethernet interface

secret EXEC mode

privileged EXEC mode

router configuration mode

 

6. Which two statements correctly describe the components of a router? (Choose two.)

RAM permanently stores the configuration file used during the boot sequence.

ROM contains diagnostics executed on hardware modules.

NVRAM stores a backup copy of the IOS used during the boot sequence.

Flash memory does not lose its contents during a reboot.

ROM contains the most current and most complete version of the IOS.

Flash contains boot system commands to identify the location of the IOS

 

7.

CCNA2Chapter1V4.0Answers4 thumb CCNA 2 Chapter 1 V4.0 Answers

Refer to the exhibit. After host 2 is connected to the switch on the LAN, host 2 is unable to communicate with host 1. What is the cause of this problem?

The subnet mask of host 2 is incorrect.

Host 1 and host 2 are on different networks.

The switch needs an IP address that is not configured.

The router LAN interface and host 1 are on different networks.

The IP address of host 1 is on a different network than is the LAN interface of the router.

 

8. Which are functions of a router? (Choose three.)

packet switching

extension of network segments

segmentation of broadcast domains

selection of best path based on logical addressing

election of best path based on physical addressing

 

9.

CCNA2Chapter1V4.0Answers5 thumb CCNA 2 Chapter 1 V4.0 Answers

Refer to the exhibit. All routers have a route in its routing table to each network that is shown in the exhibit. Default routes have not been issued on these routers. What can be concluded about how packets are forwarded in this network? (Choose two.)

If RouterC receives a packet that is destined for 10.5.1.1, it will be forwarded out interface Fa0/0.

If RouterA receives a packet that is destined for 192.168.3.146, it will be forwarded out interface S0/0/1.

If RouterB receives a packet that is destined for 10.5.27.15, it will be forwarded out interface S0/0/1.

If RouterB receives a packet that is destined for 172.20.255.1, it will be forwarded out interface S0/0/0.

If RouterC receives a packet that is destined for 192.16.5.101, it will be forwarded out interface S0/0/1.

 

10.

CCNA2Chapter1V4.0Answers6 thumb CCNA 2 Chapter 1 V4.0 Answers

The serial connection shown in the graphic needs to be configured. Which configuration commands must be made on the Sydney router to establish connectivity with the Melbourne site? (Choose three.)

Sydney(config-if)# ip address 201.100.53.2 255.255.255.0

Sydney(config-if)# no shutdown

Sydney(config-if)# ip address 201.100.53.1 255.255.255.224

Sydney(config-if)# clock rate 56000

Sydney(config-if)# ip host Melbourne 201.100.53.2

 

11.

CCNA2Chapter1V4.0Answers7 thumb CCNA 2 Chapter 1 V4.0 Answers

Refer to the exhibit. What can be concluded from the output of the running-configuration of a router?

The passwords are encrypted.

The current configuration was saved to NVRAM.

The configuration that is shown will be the one used on the next reboot.

The commands that are displayed determine the current operation of the router.

 

12.

CCNA2Chapter1V4.0Answers8 thumb CCNA 2 Chapter 1 V4.0 Answers

Refer to the exhibit. Host A pings host B. When R4 accepts the ping into the Ethernet interface, what two pieces of header information are included? (Choose two.)

source IP address: 192.168.10.129

source IP address: BBBB.3333.5677

destination IP address: 192.168.10.33

destination IP address: 192.168.10.134

destination MAC address: 9999.DADC.1234

 

13. What is the outcome of entering these commands?

R1(config)# line vty 0 4
R1(config-line)# password check123
R1(config-line)# login

ensures that a password is entered before entering user EXEC mode

sets the password to be used for connecting to this router via Telnet

requires check123 to be entered before the configuration can be saved

creates a local user account for logging in to a router or switch

 

14. Which of the following is the correct flow of routines for a router startup?

load bootstrap, load IOS, apply configuration

load bootstrap, apply configuration, load IOS

load IOS, load bootstrap, apply configuration, check hardware

check hardware, apply configuration, load bootstrap, load IOS

 

15. What three processes does a router execute when it receives a packet from one network that is destined for another network? (Choose three.)

decapsulates the Layer 3 packet by stripping off the Layer 2 frame header

uses the destination MAC Address in the IP Header to look up the next-hop address in the routing table

leaves the Layer 2 frame header intact when decapsulating the Layer 3 packet

uses the destination IP Address in the IP header to look up the next-hop address in the routing table

encapsulates the Layer 3 packet into the new Layer 2 frame and forwards it out the exit interface

encapsulates the Layer 3 packet into a special Layer 1 frame and forwards it to the exit interface

 

16. The network administrator needs to connect two routers directly via their FastEthernet ports. What cable should the network administrator use?

straight-through

rollover

cross-over

serial

 

17. Which two statements describe characteristics of load balancing? (Choose two.)

Load balancing occurs when a router sends the same packet to different destination networks.

Load balancing occurs when a router sends the same packet to different destination networks.

Load balancing allows a router to forward packets over multiple paths to the same destination network.

Unequal cost load balancing is supported by EIGRP.

If multiple paths with different metrics to a destinations exist, the router cannot support load balancing.

 

18. What information about the router and its startup process can be gathered from the output of the show version command? (Choose three.)

the last restart method

the command buffer contents

the amount of NVRAM and FLASH used

the configuration register settings

the location from where the IOS loaded

 

19.

CCNA2Chapter1V4.0Answers9 thumb CCNA 2 Chapter 1 V4.0 Answers

Which interfaces in the exhibit could be used for a leased line WAN connection? (Choose two.)

1

2

3

4

5

6

 

20. From what location can a router load the Cisco IOS during the boot process? (Choose two.)

RAM

TFTP server

NVRAM

setup routine

Flash memory

terminal

 

21. A network administrator has just entered new configurations into Router1. Which command should be executed to save configuration changes to NVRAM?

Router1# copy running-config flash

Router1(config)# copy running-config flash

Router1# copy running-config startup-config

Router1(config)# copy running-config startup-config

Router1# copy startup-config running-config

Router1(config)# copy startup-config running-config

 

22. What is the default sequence for loading the configuration file?

NVRAM, FLASH, ROM

FLASH, TFTP,CONSOLE

NVRAM, TFTP, CONSOLE

FLASH, TFTP, ROM

 

23. What header address information does a router change in the information it receives from an attached Ethernet interface before information is transmitted out another interface?

only the Layer 2 source address

only the Layer 2 destination address

only the Layer 3 source address

only the Layer 3 destination address

the Layer 2 source and destination address

the Layer 3 source and destination address

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