智慧树知到《计算机网络原理》章节测试答案
智慧树知到《计算机网络原理》章节测试答案
绪论单元测试
1、本课程采用“自顶向下”的方式讲解计算机网络原理。
A.正确
B.错误
正确答案:正确
第一章单元测试
1、The web server is not an end system?
A.正确
B.错误
正确答案:错误
2、The upper layers of the OSI model are()in correct order.
A.Session,presentation,application
B.Session,application,presentation
C.Application,presentation,session
D.Session,application,presentation,physical
正确答案:Session,presentation,application
3、The lower layers of the OSI model are()in correct order.
A.physical,transport,network,data link
B.physical,system,network,logical
C.physical,data link,network,transport
D.physical,logical,system,network
正确答案:physical,data link,network,transport
4、The Internet Protocol(IP) generally corresponds to which OSI layer?
A.Session(layer five)
B.Network(layer three)
C.Transport(layer four)
D.Data link(layer two)
正确答案:Network(layer three)
5、Which of these network devices primarily functions at the OSI Network layer(layer 3)?
A.All of the above
B.Router
C.Gateway
D.Switch
正确答案:Router
第二章单元测试
1、TCP is an application layer protocol.。
A.正确
B.错误
正确答案:错误
2、Which is not an application layer protocol? ()
A.DNS
B.FTP
C.HTTP
D.ARP
正确答案:ARP
3、The only architecture of applications is peer-to-peer.。
A.正确
B.错误
正确答案:错误
4、In the client-server architecture, the clients is not always on.。
A.正确
B.错误
正确答案:正确
5、Mail server port number is()
A.25
B.81
C.403
D.80
正确答案:25
第三章单元测试
1、The POP3 protocol runs over()and uses port().
A.TCP 110
B.UDP 110
C.UDP 25
D.TCP 25
正确答案:TCP 110
2、()is most used for error reporting.
A.UDP
B.SMTP
C.ICMP
D.FTP
正确答案:ICMP
3、In the following options, which does not use UDP?
A.Internet phone
B.streaming multimedia
C.video conferencingS
D.telnet
正确答案:telnet
4、Internet transport-layer protocols include TCP,IP and UDP.。
A.正确
B.错误
正确答案:错误
5、TCP sender perceive congestion through a timeout event or a receiving duplicate ACK-s event.。
A.正确
B.错误
正确答案:正确
第四章单元测试
1、RARP protocol translates IP addresses into MAC addresses.。
A.正确
B.错误
正确答案:错误
2、The PING command is implemented by the ICMP echo request/reply.。
A.正确
B.错误
正确答案:正确
3、An IP address consists of a network number field and a host number fielD.。
A.正确
B.错误
正确答案:正确
4、The main task of the Internet’s Domain Name System(DNS) is to:
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
正确答案:Translate mnemonic(记忆的)names to IP addresses
5、The Internet’s network layer is responsible for moving network-layer packets known as() from one host to another.
A.frame
B.datagram
C.message
D.segment
正确答案:datagram
第五章单元测试
1、MAC address is unique in the worlD.。
A.正确
B.错误
正确答案:正确
2、A 16-port switch,each port is 10/100M full-duplex adaptive,then bus bandwidth of the switch is()
A.3.2G
B.10M
C.100M
D.1.6G
正确答案:100M
3、The switch receives a frame whose targe address cannot be found in its MAC address table,then switch will do()
A.send back
B.flooding
C.discard
D.forward
正确答案:flooding
4、What is true of the ARP table in the following description is?
A.mapping of IP address to MAC address
B.error detection
C.reduce network traffic
D.routing selection
正确答案:mapping of IP address to MAC address
5、Which layer does the switch work on?
A.transport layer
B.link layer
C.application layer
D.network layer
正确答案:link layer
第六章单元测试
1、There are two address fields in 802.11 frame.。
A.正确
B.错误
正确答案:错误
2、What are the type of wireless networks?
A.Single hop, infrastructure-less
B.Single hop, infrastructure-based
C.Multi-hop, infrastructure-based
D.Multi-hop, infrastructure-less
正确答案:Single hop, infrastructure-less;Single hop, infrastructure-based;Multi-hop, infrastructure-based;Multi-hop, infrastructure-less
3、Hosts in wireless networks can work in two modes()
A.infrastructure mode
B.online mode
C.ad hoc mode
D.offline mode
正确答案:infrastructure mode;ad hoc mode
4、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.
A.12
B.11
C.9
D.10
正确答案:11
5、CDMA is a kind of() protocol
A.channel division
B.taking-turns protocol
C.random access
D.none of the above
正确答案:random access