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无锡网络工程师CCNA课后练习题

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Cisco网络部分

1.What is the correct order for the OSI model? 

  P=Presentation, S=Session, D=Datalink, 
  Ph=Physical, T=Transport, A= Application, 
 N=Network 

A. P S A PH D N T 
B. A P S T N D PH 
C. PH D N T A S P 
D. P S A T N D PH 
2.Which two answers are functions of the OSI model"s network layer? 

A. Sequencing of frames 
B. Path determination 
C. Packet switching 
D. Packet sequencing 
3.Which of the following are considered routing protocols? 
A.OSPF 
B.IP 
C.IPX 
D.EIGRP 
E.Token Ring 
4.Which of the following indicates the router is in privilege mode? 
A.Router# 
B.Router> 
C.Router- 
D.Router* 
5.CDP operates at which layer? 
A.Transport 
B.Network 
C.Datalink 
D.Physical 
6.If you need to copy the currently executing configuration file into NVRAM, which command would you use? 
A.router#copy startup-config running-config 
B.router#copy startup-config TFTP 
C.router#copy running-config startup-config 
D.router>copy startup-config running-config 
7.Which of the following commands would not set a password on a Cisco router? 
A. router(config)#enable secret 
B. router(config-line)#password test 
C. router(config)#service encryption password 
D. router(config)#enable password 
8.Which of the following is not an interior routing protocol? 
A.RIP 
B.IGRP 
C.OSPF 
D.BGP 
9.Which router commands will enable RIP for 176.18.0.0? Choose 2 
A.router rip 
B.network 176.18.0.0 
C.network rip 
D.network rip 176.18.0.0 
10.Which of the following about ARP is true? Choose 2 
A. It is in the application layer 
B. It is in the network layer 
C. It maps mac addresses to ip addresses 
D. It maps ip addresses to mac addresses 
11.Which of the following is a class A ip address? 
A. 10.14.16.12 
B. 127.0.0.1 
C. 172.15.42.34 
D. 209.123.32.212 
12. How would the number 231 be expressed as a binary number?
A. 11011011
B. 11110011
C. 11100111
D. 11111001
E. 11010011
 
13.You have a Class C network, and you need ten subnets. You wish to have as many addresses available for hosts as possible. Which one of the following subnet masks should you use?
A. 255.255.255.192
B. 255.255.255.224
C. 255.255.255.240
D. 255.255.255.248
E. None of the above
 
14.What is the subnet for the host IP address 172.16.210.0/22?
A. 172.16.42.0
B. 172.16.107.0
C. 172.16.208.0
D. 172.16.252.0
E. 172.16.254.0
F. None of the above
 
15.A default Frame Relay WAN is classified as what type of physical network?
A. point-to-point
B. broadcast multi-access
C. nonbroadcast multi-access
D. nonbroadcast multipoint
E. broadcast point-to-multipoint
 
16.Refer to the exhibit. How many broadcast domains exist in the exhibited topology?

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