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.。