ccna题库_401-450(3)

C. password enable c1sco D. enable secret c1sco

QUESTION 415

In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switched LAN? A. after broken links are re-established

B. in an improperly implemented redundant topology C. when upper-layer protocols require high reliability D. during high traffic periods

E. when a dual ring topology is in use

QUESTION 416

Refer to the exhibit.Which is the most efficient summarization that R1 can use to advertise its networks to R2?

A. 172.1.4.0/22 B. 172.1.0.0/21 C. 172.1.0.0/22

D. 172.1.4.0/25 172.1.4.128/25 172.1.5.0/24 172.1.6.0/24 172.1.7.0/24 E. 172.1.4.0/24 172.1.5.0/24 172.1.6.0/24 172.1.7.0/24

QUESTION 417

Refer to the exhibit.Based on the exhibited routing table,how will packets from a host within the 192.168.10.192/26 LAN be forwarded to 192.168.10.1?

A. The router will forward packets from R3 to R2 to R1 B. The router will forward packets from R3 to R1 C. The router will forward packets from R3 to R1 to R2

D. The router will forward packets from R3 to R2 to R1 AND from R3 to R1

QUESTION 418

Which layer 2 protocol encapsulation type supports synchronous and asynchronous circuis and has built-in security mechanisms? A. Frame Relay B. HDLC C. x.25 D. PPP

QUESTION 419

Which command can be used to verify the DLCI destination address in a Frame Relay static configuration?

A. show frame-relay end-to-end B. show frame-relay map C. show frame-relay lmi D. show frame-relay pvc

QUESTION 420

Refer to the exhibit.The network administrator requires easy configuration options and minimal routing protocol traffic.Which two options provide adequate routing table information for traffic that passes between the two routers and satisfy the requests of the network administrator?(choose two)

A. a dynamic routing procotol on InternetRouter to advertise summarized routers to

CentralRouter.

B. a dynamic routing procotol on CentralRouter to advertise summarized routers to InternetRouter.

C. a static route on InternetRouter to direct traffic that is destined for 172.16.0.0/16 to CentralRouter.

D. a dynamic routing procotol on InternetRouter to advertise all routes to CentralRouer. E. a dynamic routing procotol on CentralRouer to advertise all routes to InternetRouter F. a static,default route on CentralRouter that directs traffic to InternetRouter.

QUESTION 421

Given an IP address 172.16.28.252 with a subnet mask of 255.255.240.0, what is the correct network addres? A. 172.16.16.0 B. 172.16.24.0 C. 172.16.0.0 D. 172.16.28.0

QUESTION 422

Refer to the exibit. Three cisco 2950 switches are set to their default priority settings. During the spanning-tree process,which switch will be elected as the root bridge?

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