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.。