Discovery 3

1

What do companies gain from the services performed at the enterprise edge?Correct Response

Your Response

faster communication with server farms

stronger security against malicious attacks

faster communication with Internet destinations

enhanced performance and reliability through VLANs and redundant trunk links

This item references content from the following areas:CCNA Discovery: Introducing Routing and Switching in the Enterprise

1.1.2 Traffic Flow in the Enterprise Network

3

Refer to the exhibit. Which route will appear in the routing table?Correct Response

Your Response

R 10.10.4.0/24 [120/1] via 10.10.10.1, 00:00:12, FastEthernet0/1




R 10.10.4.0/24 [120/1] via 10.10.30.1, 00:00:12, FastEthernet1/0This item references content from the following areas:CCNA Discovery: Introducing Routing and Switching in the Enterprise

5.2.5 Verifying RIP

4

Refer to the exhibit. Assuming that all three routers are configured with the EIGRP routing protocol and sharing information, what information can be gathered from the show command output?Correct Response

Your Response

Router B has EIGRP adjacencies with both router A and C.

Router B has a fully converged topology table.

Router B has not formed an adjacency with router A.

Router B has not formed an adjacency with router C.This item references content from the following areas:CCNA Discovery: Introducing Routing and Switching in the Enterprise

5.4.3 Verifying EIGRP Operation

6

Refer to the exhibit. EIGRP has been configured on all routers in the network. Router R1 cannot form a neighbor relationship with router R2. On the basis of the show ip protocols command output that is provided, what could be the cause of the problem?Correct Response

Your Response

Automatic summarization is enabled on both routers.

The processes on both routers are configured for incorrect networks.

There is a different autonomous system number on each router.

The metric value for K2, K4, and K5 parameters on both routers is set to “0."This item references content from the following areas:CCNA Discovery: Introducing Routing and Switching in the Enterprise

5.4.1 Configuring EIGRP 5.4.3 Verifying EIGRP Operation

9

Refer to the exhibit. R1 and R2 are connected via serial interfaces. Both interfaces show that there is Layer 2 connectivity between them. The administrator verifies that CDP is operational; however, pings between the two interfaces are unsuccessful. What is the cause of this connectivity problem?Correct Response

Your Response

no set loopback

incorrect subnet mask on R2

incompatible bandwidth

incorrect IP address on R1

incompatible encapsulationThis item references content from the following areas:CCNA Discovery: Introducing Routing and Switching in the Enterprise

4.2.5 Implementing VLSM Addressing

10Refer to the exhibit. What is represented by the Null0 route for the 128.107.0.0 network?Correct Response

Your Response

a child route that is defined

a parent route that is defined and sourced from a physical interface

a summary route for advertising purposes, not an actual path

the result of the no auto-summary command on a router


5.4.2 EIGRP Route Summarization

15

Refer to the exhibit. Both routers are configured to use the EIGRP routing protocol. However, when the show ip eigrp neighbors command is issued at R1, the output displays that the routers are unable to establish adjacency. What is the possible cause of this problem?Correct Response

Your Response

EIGRP routing is incorrectly configured at R1.

The autonomous system number is the same on both routers.

The no auto-summary command is applied on both routers.

The IP address of the serial interfaces of both routers is incorrectly configured.This item references content from the following areas:CCNA Discovery: Introducing Routing and Switching in the Enterprise

5.4.3 Verifying EIGRP Operation

18

Refer to the exhibit. What is the result of configuring the newly installed R1 with the exhibited command?Correct Response

Your Response

It will set the gateway of last resort for R1.

It will configure the IP address 10.1.1.2 on one interface of R1.

It configures the router to forward traffic that is destined for the 192.168.1.128/26 network through the interface with IP address 10.1.1.2.

It configures a static route for all packets with the source network address 192.168.1.128/26.


5.1.4 Configuring Static Routes

22

Refer to the exhibit. Users on the 172.30.20.0/24 network are unable to access any of the servers located on the 192.168.0.0/23 network. Given the network topology and OSPF configuration, what two problems exist in this network? (Choose two.)Correct Response

Your Response

There is a routing loop occurring between all three routers.

There is a network statement missing.

Network 172.30.20.0 has an incorrect wildcard mask.

The OSPF area configuration is incorrect.

/23 is an invalid subnet mask for the 192.168.0.0 network.This item references content from the following areas:CCNA Discovery: Introducing Routing and Switching in the Enterprise

9.3.1 RIP Issues

23

What are two benefits of using ACLs? (Choose two.)Correct Response

Your Response

They provide IP filtering.

They reduce the processing load on the router.

They simplify the configuration of inter-VLAN routing.

They prevent routing loops and facilitate convergence.

They identify traffic for multiple uses such as QoS and NAT.This item references content from the following areas:CCNA Discovery: Introducing Routing and Switching in the Enterprise

8.1.2 Access Control Lists

26

Which network statement would include the 172.20.64.0 /19 network in the OSPF routing process?Correct Response

Your Response

Router(config-router)# network 172.20.64.0 0.0.0.31 area 0



Router(config-router)# network 172.20.64.0 0.0.31.255 area 0 This item references content from the following areas:CCNA Discovery: Introducing Routing and Switching in the Enterprise

6.2.1 Configuring Basic OSPF in a Single Area

29

What should be considered when designing an addressing scheme that uses private IP address space?Correct Response

Your Response

Private IP addresses are globally routable.

Address summarization is not recommended.

Hierarchical design principles should be utilized.

Discontiguous networks are no longer problematic.This item references content from the following areas:CCNA Discovery: Introducing Routing and Switching in the Enterprise

4.4.1 Private IP Address Space

36

What is the effect of adding Layer 2 switches to a network?Correct Response

Your Response

software-based forwarding

elimination of broadcast traffic

decrease in the size of collision domains

permissible cable lengths greater than 100 metersThis item references content from the following areas:CCNA Discovery: Introducing Routing and Switching in the Enterprise

3.1.1 Switching and Network Segmentation

38 Refer to the exhibit. Router1 and Router2 are both running RIPv2 with autosummarization disabled. Which subnet mask will Router1 associate with network 192.168.4.16/28?Correct Response

Your Response

255.255.0.0

255.255.240.0

255.255.255.0

255.255.255.240

255.255.255.248This item references content from the following areas:CCNA Discovery: Introducing Routing and Switching in the Enterprise

5.2.2 Routing Information Protocol (RIP)

40

A network administrator is creating an addressing scheme and has determined that the company network 192.168.1.0/24 will require 8 subnets with at least 25 hosts on each subnet. Which subnet mask will meet these requirements?Correct Response

Your Response

/25

/26

/27

/28

/29This item references content from the following areas:CCNA Discovery: Introducing Routing and Switching in the Enterprise

4.2.3 Basic Subnetting Process

43

Refer to the exhibit. What are the DR and the BDR on the network? (Choose two.)Correct Response

Your Response

The DR is router 1.

The DR is router 2.

The DR is router 3.

The BDR is router 1.

The BDR is router 2.

The BDR is router 3.This item references content from the following areas:CCNA Discovery: Introducing Routing and Switching in the Enterprise

6.2.4 Verifying OSPF Operation

44

Which three statements are true about the RIP and EIGRP routing protocols? (Choose three.)Correct Response

Your Response

Both routing protocols are distance vector protocols.

RIP forms neighbor adjacencies whereas EIGRP does not.

Both routing protocols have a maximum hop count limitation.

Both routing protocols use a composite metric for destination networks.

RIP and EIGRP both support equal cost load balancing, but only EIGRP supports unequal cost load balancing.

EIGRP has a higher administrative distance making it the preferred protocol when compared to a RIP route in the same network.


5.3.2 Enhanced Interior Gateway Routing Protocol (EIGRP)

46

Refer to the exhibit. EIGRP has been configured on all routers in the network. An EIGRP summary route is configured on the HQ router. How will packets destined for the 192.168.0.10/24 network be handled by router HQ?Correct Response

Your Response

The traffic will be forwarded to router R2 using the default route.

The traffic will be forwarded to the BR1 and BR2 branch routers.

The traffic will be forwarded to the BR3 and BR4 branch routers.

The traffic will be forwarded to routers BR1, BR2, BR3, and BR4.

The traffic will be forwarded to the Null0 interface and will be discarded.This item references content from the following areas:CCNA Discovery: Introducing Routing and Switching in the Enterprise

5.4.2 EIGRP Route Summarization

48

Refer to the exhibit. How will Switch2 respond to the VTP advertisement sent by Switch1?Correct Your

Response

Response

It will ignore the VTP advertisement.

It will add two VLANs to its database.

It will change its configuration revision number to 4.

It will send the VTP advertisement to Switch1 to delete the two VLANs.This item references content from the following areas:CCNA Discovery: Introducing Routing and Switching in the Enterprise

3.5.1 VLAN Trunking Protocol (VTP) 3.5.2 Configuring VTP

50

Refer to the exhibit. A network technician has added router R0 to an existing network that contains router R1. R0 is configured with EIGRP and is connected to R1 via the Fa0/0 interface of each router. After completing an analysis of the network, the technician notices that the routes to the networks that are supported by routers R0 and R1 are not being exchanged. What is a possible cause for this failure?Correct Response

Your Response

R0 was configured with the wrong autonomous system number.

FastEthernet interfaces on R0 are in a shutdown state.

Interface Fa0/0 on R0 is configured as a passive interface.

Interface Fa0/0 on R1 is configured as a passive interface.

Documents

Discovery 3