CCNA 2 Chapter 3 (B)

1) Refer to the exhibit. Which statement correctly describes how R1 will determine the best path to R2?
ans:
R1 will install an EIGRP route using network B in its routing table because the administrative distance of EIGRP is lower than RIP.

2) Which two statements are true regarding classless routing protocols? (Choose two.)
ans:
sends subnet mask information in routing updates
allows for use of both 192.168.1.0/30 and 192.168.1.16/28 subnets in the same topology

CCNA 2 Chapter 1

1. What three processes does a router execute when it receives a packet from one network that is destined for another network? (Choose three.)
ans:
decapsulates the Layer 3 packet by stripping off the Layer 2 frame header
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

2. Which interfaces in the exhibit could be used for a leased line WAN connection? (Choose two.)
ans:
1
4

CCNA 2 Chapter 2 (B)

1. Refer to the exhibit. Given the output in the exhibit, how would a clock rate be determined for this link?
ans:
The rate configured on the DCE determines the clock rate

2. Which piece of information is available from examining the output of the command show ip interface brief?
ans:
Interface IP address

CCNA 2 Chapter 4 (B)

1. What does the RIP holddown timer do?
ans:
instructs routers to ignore updates, for a specified time or event, about possible inaccessible routes

2. What metric does the RIP routing protocol consider to be infinity?
ans:
16

CCNA 2 Chapter 5 (B)

1. 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?
ans:
155 seconds

2. 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?
ans:
10.0.0.0/8

CCNA 2 Chapter 6

1. Refer to the exhibit. The network administrator wants to create a subnet for the point-to-point connection between the two routers. Which subnetwork mask would provide enough addresses for the point-to-point link with the least number of wasted addresses?
ans:
255.255.255.252

2. An additional subnet is required for a new Ethernet link between Router1 and Router2 as shown in the diagram. Which of the following subnet addresses can be configured in this network to provide a maximum of 14 useable addresses for this link while wasting the fewest addresses?
ans:
192.1.1.224/28

CCNA 2 Chapter 7 (B)

1. Refer to the exhibit. If all routers are running RIP version 2, why is there no route for the 192.168.1.32/27 network?
ans:
Rip version 2 will auto summarize routes by default.

2. What are two reasons to implement RIP version 2 rather than RIP version 1? (Choose two.)
ans:
RIP version 2 supports VLSM.
RIP version 2 supports routing update authentication.

CCNA 2 Chapter 8 (B)

1. Refer to the exhibit. The network administrator has discovered that packets destined for servers on the 172.16.254.0 network are being dropped by Router2. What command should the administrator issue to ensure that these packets are sent out the gateway of last resort, Serial 0/0/1?
ans:
ip classless

2. Refer to the exhibit. How many routes in this output qualify for use as ultimate routes?
ans:
7

CCNA 2 Chapter 9 (B)

1. On a router running EIGRP, what database would maintain a list of feasible successors?
ans:
topology table

2. Refer to the exhibit. This is the debug output from 2 directly connected EIGRP routers. They are not forming an adjacency. What is the cause?
ans:
they have different autonomous-system numbers

CCNA 2 Chapter 10 (B)

1. Which algorithm is run by link-state routing protocols to calculate the shortest path to destination networks?
ans:
Dijkstra

2. What feature do modern link-state protocols provide to minimize processing and memory requirements?
ans:
splitting routing topologies into smaller areas

CCNA 2 Chapter 10

1. Refer to the exhibit. Which command will advertise the 192.168.1.64/30 network but not the 192.168.1.32 network on router A?

network 192.168.1.64 0.0.0.3

2. Refer to the exhibit. EIGRP is the only routing protocol enabled on this network. No static routes are configured on this router. What can be concluded about network 198.18.1.0/24 from the exhibited output?

Packets that are destined for 198.18.1.0/24 will be forwarded to 198.18.10.6.

3. On a router running EIGRP, what database would maintain a list of feasible successors?

topology table

CCNA 2 Chapter 9

1. Refer to the exhibit. Which command will advertise the 192.168.1.64/30 network but not the 192.168.1.32 network on router A?

network 192.168.1.64 0.0.0.3

2. Refer to the exhibit. EIGRP is the only routing protocol enabled on this network. No static routes are configured on this router. What can be concluded about network 198.18.1.0/24 from the exhibited output?

Packets that are destined for 198.18.1.0/24 will be forwarded to 198.18.10.6.

3. On a router running EIGRP, what database would maintain a list of feasible successors?

topology table

4. What two actions will the EIGRP DUAL FSM take if a link to a network goes down? (Choose two.)

query neighbors for a new route
search topology table for a feasible successor

CCNA 2 Chapter 8

1. Refer to the exhibit. What protocol was used to distribute the routing information for the network 172.16.1.4?

RIPv2

2. Refer to the exhibit. A packet destined for host 128.107.0.5/16 is processed by the JAX router. After finding the static route in the routing table that matches the destination network for this packet, what does the router do next?

performs a recursive lookup to find the exit interface used to forward the packet

3. Refer to the exhibit. What parent network will automatically be included in the routing table when the three subnets are configured on Router1?

172.16.0.0/16

4. The following entry is displayed in the routing table:

R 192.168.8.0/24 [120/2] via 192.168.4.1, 00:00:26, Serial0/0/1

What type of route is this?

a level 1 ultimate network route

CCNA 2 Chapter 7

1. Refer to the exhibit. Which command will allow Router2 to learn about the 192.168.16.0/28 network?

Router1(config-router)# network 192.168.16.0

2. What is the maximum network diameter permitted by the default metric of RIPv2?

15 hops

3. Refer to the exhibit. All routers are running RIPv1. What changes will occur in the routing table of router B if a loopback interface with an address of 10.16.1.129/27 is configured on router B?

A connected route to the 10.16.1.128/27 network is added.

4. 10.0.0.0/8

127.0.0.0/8
172.16.0.0/12
192.168.0.0/16

CCNA 2 Chapter 5

1. In what two ways does SDM differ from the IOS CLI? (Choose two.)

**SDM is used for in-band management only. The IOS CLI can be used for in-band and out-of-band management.
SDM is accessed through a Telnet application. The IOS CLI is accessed through a web browser.
SDM is available for all router platforms. The IOS CLI is available for a limited number of Cisco devices.
**SDM utilizes GUI buttons and text boxes. The IOS CLI requires the use of text-based commands.
SDM is used for advanced configuration tasks. The IOS CLI is preferred for initial basic device configuration.


2. Which mode will a configured router display at login?

global configuration mode
setup mode
ROM monitor mode
**user EXEC mode

CCNA 2 Chapter 4

1. 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 only updates affected neighbors.
EIGRP updates are partial.

2. Which event will cause a triggered update?

a route is installed in the routing table

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

3

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

CCNA 2 Chapter 3

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

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

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

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

sends subnet mask information in routing updates
allows for use of both 192.168.1.0/30 and 192.168.1.16/28 subnets in the same topology

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

show ip route

CCNA 2 Chapter 2

1. A router has one static route configured 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 is moved to a different interface on the same router.
A topology change occurs where the existing next-hop address or exit interface is not accessible.

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

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

3. 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.

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

a modem
a CSU/DSU device

CCNA 2 Chapter 1

1. Which two things can be determined by using the ping command? (Choose two.)

the number of routers between the source and destination device
the IP address of the router nearest the destination device
**the average time it takes a packet to reach the destination and for the response to return to the source
**whether or not the destination device is reachable through the network
the average time it takes each router in the path between source and destination to respond


2. What are three main types of high-bandwidth connection options used by medium- to large-sized businesses? (Choose three.)

DSL
cable modem
Ethernet
**metro Ethernet
**T1
**T3