2021知到答案 计算机网络原理 智慧树网课章节测试答案

绪论 章节测试

1、选择题:本课程采用“自顶向下”的方式讲解计算机网络原理。
选项：
A:对
B:错
答案: 【对】

第一章 章节测试

1、选择题:The web server is not an end system?
选项：
A:错
B:对
答案: 【错】
2、选择题:The upper layers of the OSI model are ( )in correct order.
选项：
A:Session,presentation,application
B:Session,application,presentation
C:Application,presentation,session
D:Session,application,presentation,physical
答案: 【Session,presentation,application】
3、选择题:The lower layers of the OSI model are ( )in correct order.
选项：
A:physical,transport,network,data link
B:physical,system,network,logical
C:physical,data link,network,transport
D:physical,logical,system,network
答案: 【physical,data link,network,transport】
4、选择题:The Internet Protocol (IP) generally corresponds to which OSI layer?
选项：
A:Session(layer five)
B:Network(layer three)
C:Transport(layer four)
D:Data link(layer two)
答案: 【Network(layer three)】
5、选择题:Which of these network devices primarily functions at the OSI Network layer(layer 3)?
选项：
A:All of the above
B:Router
C:Gateway
D:Switch
答案: 【Router】

第二章 章节测试

1、选择题:TCP is an application layer protocol.
选项：
A:错
B:对
答案: 【错】[$]
2、选择题:Which is not an application layer protocol? ( )
选项：
A:DNS
B:FTP
C:HTTP
D:ARP
答案: 【ARP】
3、选择题:The only architecture of applications is peer-to-peer.
选项：
A:对
B:错
答案: 【错】
4、选择题:In the client-server architecture, the clients is not always on.
选项：
A:错
B:对
答案: 【对】
5、选择题:Mail server port number is ( )
选项：
A:25
B:81
C:403
D:80
答案: 【25】

第三章 章节测试

1、选择题:The POP3 protocol runs over ____ and uses port ____.
选项：
A:TCP 110
B:UDP 110
C:UDP 25
D:TCP 25
答案: 【TCP 110】
2、选择题:____ is most used for error reporting.
选项：
A:UDP
B:SMTP
C:ICMP
D:FTP
答案: 【ICMP】
3、选择题:In the following options, which does not use UDP?
选项：
A:Internet phone
B:streaming multimedia
C:video conferencingS
D:telnet
答案: 【telnet】
4、选择题:Internet transport-layer protocols include TCP,IP and UDP.
选项：
A:错
B:对
答案: 【错】
5、选择题:TCP sender perceive congestion through a timeout event or a receiving duplicate ACK-s event.
选项：
A:错
B:对
答案: 【对】

第四章 章节测试

1、选择题:RARP protocol translates IP addresses into MAC addresses.
选项：
A:错
B:对
答案: 【错】
2、选择题:The PING command is implemented by the ICMP echo request/reply.
选项：
A:对
B:错
答案: 【对】
3、选择题:An IP address consists of a network number field and a host number field.
选项：
A:对
B:错
答案: 【对】
4、选择题:The main task of the Internet’s Domain Name System (DNS) is to:
选项：
A:Translate mnemonic（记忆的） names to IP addresses
B:Translate port numbers to IP addresses
C:Specify the standards for Internet domain names
D:Provide an authority for registering domain names
答案: 【Translate mnemonic（记忆的） names to IP addresses】
5、选择题:The Internet’s network layer is responsible for moving network-layer packets known as ( ) from one host to another.
选项：
A:frame
B:datagram
C:message
D:segment
答案: 【datagram】

第五章 章节测试

1、选择题:MAC address is unique in the world.
选项：
A:错
B:对
答案: 【对】
2、选择题:A 16-port switch,each port is 10/100M full-duplex adaptive,then bus bandwidth of the switch is ( )
选项：
A:3.2G
B:10M
C:100M
D:1.6G
答案: 【100M】
3、选择题:The switch receives a frame whose targe address cannot be found in its MAC address table,then switch will do ( )
选项：
A:send back
B:flooding
C:discard
D:forward
答案: 【flooding】
4、选择题:What is true of the ARP table in the following description is?
选项：
A:mapping of IP address to MAC address
B:error detection
C:reduce network traffic
D:routing selection
答案: 【mapping of IP address to MAC address】
5、选择题:Which layer does the switch work on?
选项：
A:transport layer
B:link layer
C:application layer
D:network layer
答案: 【link layer】

第六章 章节测试

1、选择题:There are two address fields in 802.11 frame.
选项：
A:对
B:错
答案: 【错】
2、选择题:What are the type of wireless networks?
选项：
A:Single hop, infrastructure-less
B:Single hop, infrastructure-based
C:Multi-hop, infrastructure-based
D:Multi-hop, infrastructure-less
答案: 【Single hop, infrastructure-less;
Single hop, infrastructure-based;
Multi-hop, infrastructure-based;
Multi-hop, infrastructure-less】
3、选择题:Hosts in wireless networks can work in two modes ( )
选项：
A:infrastructure mode
B:online mode
C:ad hoc mode
D:offline mode
答案: 【infrastructure mode;
ad hoc mode】
4、选择题:APs transmit beacon frames. An AP’s beacon frames will be transmitted over one of the ( ) channels. The beacon frames permit nearby wireless stations to discover and identify the AP.
选项：
A:12
B:11
C:9
D:10
答案: 【11】
5、选择题:CDMA is a kind of ( ) protocol
选项：
A:channel division
B:taking-turns protocol
C:random access
D:none of the above
答案: 【random access】[/$]