ccna题库_401-450

QUESTION 401

Which of the following describes the roles of devices in a WAN? (Choose three.) A. A CSU/DSU terminates a digital local loop B. A modem terminates a digital local loop C. A CSU/DSU terminates an analog local loop D. A modem terminates an analog local loop E. A router is commonly considered a DTE device F. A router is commonly considered a DCE device

QUESTION 402

How should a router that is being used in a Frame Relay network be configured to avoid split horizon issues from preventing routing updates?

A. Configure a separate sub-interface for each PVC with a unique DLCI and subnet assigned to the sub-interface

B. Configure each Frame Relay circuit as a point-to-point line to support multicast and broadcast traffic

C. Configure many sub-interfaces on the same subnet

D. Configure a single sub-interface to establish multiple PVC connections to multiple remote router interfaces

QUESTION 403

The Frame Relay network in the diagram is not functioning properly. What is the cause

of the problem?

A. The Gallant router has the wrong LMI type configured

B. Inverse ARP is providing the wrong PVC information to the Gallant router

C. The S3 interface of the Steele router has been configured with the frame-relay encapsulation ietf command

D. The frame-relay map statement in the Attalla router for the PVC to Steele is not correct

E. The IP address on the serial interface of the Attalla router is configured incorrectly

QUESTION 404

As a CCNA candidate, you must have a firm understanding of the IPv6 address structure. Refer to IPv6 address, could you tell me how many bits are included in each filed? A. 24 B. 4

C. 3 D. 16

QUESTION 405

Refer to the exhibit. How many broadcast domains exist in the exhibited topology?

A. one B. two C. three D. four E. five F. six

QUESTION 406 Refer to the exhibit.

The network administrator has created a new VLAN on Switch1 and added host C and host D. The administrator has properly configured switch interfaces FastEthernet0/13 through FastEthernet0/24 to be members of the new VLAN. However, after the network administrator completed the configuration, host A could communicate with host B, but host A could not communicate with host C or host D. Which commands are required to resolve this problem?

A. Router(config)# interface fastethernet 0/1.3 Router(config-if)# encapsulation dot1q 3

Router(config-if)# ip address 192.168.3.1 255.255.255.0 B. Router(config)# router rip

Router(config-router)# network 192.168.1.0 Router(config-router)# network 192.168.2.0 Router(config-router)# network 192.168.3.0 C. Switch1# vlan database

Switch1(vlan)# vtp v2-mode Switch1(vlan)# vtp domain cisco Switch1(vlan)# vtp server

D. Switch1(config)# interface fastethernet 0/1 Switch1(config-if)# switchport mode trunk

Switch1(config-if)# switchport trunk encapsulation isl

QUESTION 407

On a network of one department, there are four PCs connected to a switch, as shown in the following figure:

After the Switch1 restarts. Host A ( the host on the left ) sends the first frame to Host C (the host on the right). What the first thing should the switch do? A. Switch1 will add 192.168.23.12 to the switching table. B. Switch1 will add 192.168.23.4 to the switching table. C. Switch1 will add 000A.8A47.E612 to the switching table. D. None of the above

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