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1、 Computer Network Test Paper1.Who invented IP and some related Internet protocols? B a)Vinton Cerf and Bob Metcalfe b)Vinton Cerf and Robert Kahn c)Bob Metcalfe and Ivan Sutherland d)Bob Metcalfe and David Clark 2.In the OSI reference model, 3.The upper layers of the OSI model are, in correct order
2、B a)Session, application, presentation b)Session, presentation, application c)Session, application, presentation, physical d)Application, presentation, session 4.The lower layers of the OSI model are, in correct order D a)physical, system, network, logical b)physical, logical, network, system c)phys
3、ical, transport, network, data link d)physical, data link, network, transport 5.The Internet Protocol (IP) generally corresponds to which OSI layer? A a)Network (layer three) b)Transport (layer four) c)Data link (layer two) d)Session (layer five) 6.MTU stands for C a)Minimum Transfer Unit b)Minimum
4、Transmission Unit c)Maximum Transmission Unit d)Maximum Transfer Unit 7.What layer of the OSI model is designed to perform error detection functions? B a)Physical b)Data link c)Network d)transport 8.Which of these network devices primarily functions at the OSI Network layer (layer 3)? C a)Switch b)G
5、ateway 名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 1 页，共 6 页 - - - - - - - - - c)Router d)All of the above 9.What is the size of today s standard (IPv4) IP address? A a)4 bytes (32 bits) b)12 bytes (96 bits) c)15 bytes (120 bits) d)16 bytes (128 bits) 10. What is
6、the size of the next-generation (IPv6) IP address? a)4 bytes (32 bits) b)12 bytes (96 bits) c)15 bytes (120 bits) d)16 bytes (128 bits) 11. Which of the following higher-level protocols runs over IP? D a)FTP b)HTTP c)SMTP d)All of the above 12. Which of the following IPv4 addresses is the loopbackad
7、dress? C a)0.0.0.0 b)10.0.0.1 c)127.0.0.1 d)255.255.255.255 13. Which of the following IPv6 addresses is the loopback address? B a)0:0 b)0:1 c)127:0 d)127:1 14. The length of an IP datagram header can vary depending on the options used. What is the smallest possible IP header size? B a)16 bytes b)20
8、 bytes c)24 bytes d)60 bytes 15. The source IP address for an IPv4 datagram is stored where in the header? C a)2nd longword (bytes 5-8) b)3rd longword (bytes 9-12) c)4rd longword (bytes 13-16) 名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 2 页，共 6 页 - - - - - - - - -
9、 d)5rd longword (bytes 17-20) 16. The destination IP address for an IPv4 datagram is stored where in the header? D a)2nd longword (bytes 5-8) b)3rd longword (bytes 9-12) c)4rd longword (bytes 13-16) d)5rd longword (bytes 17-20) 17. The header length field in an IPv4 datagram contains the size of an
10、IP header measured in number of C a)Bits b)Bytes c)Longwords (4 bytes) d)None of the above 18. Can IP run over any other physical networks besides Ethernet? D a)No (and IP does not run over Ethernet) b)No c)Yes (but IP does not run over Ethernet) d)Yes 19. What function does Address Resolution Proto
11、col (ARP) perform? A a)Converts IP addresses to Ethernet addresses b)Automatically assigns IP addresses to computers c)Prevents two computers from using the same IP address d)None of the above 20. What mechanism does ARP use to resolve IP addresses? B a)Mathematical formula b)Lookup table c)Central
12、web site d)Random number generator 21. Which utility program is designed to report whether a networked computer is responding at a given IP address, and how long these responses take? B a)traceroute b)ping c)ttcp d)netstate 22. which of these shell commands supplies the IP address of a computer runn
13、ing the Linux operating system? B a)ipconfig b)ifconfig 名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 3 页，共 6 页 - - - - - - - - - c)linuxconf d)none of the above 23. Which of the following technologies manage the conversion between IP addresses and host names? B a)B
14、GP b)DNS c)ARP d)All of the above 24. CIDR stands for D a)Class-based Internet Domain Routingb)Careful Inter-Domain Routing c)Constant Internet Domain Routing d)Classless Inter-Domain Routing 25. In CIDR notation, which of the following networks contains host 192.168.14.2? B a)192.168.10.0/22 b)192.
15、168.11.0/21 c)192.168.12.0/23 d)192.168.13.0/24 26. Which central authority is responsible for allocating IP addresses on the Internet? B a)IETF b)IANA c)IEEE d)None of the above 27. The IP delivery service is C a)Reliable, connection-oriented b)Non-routable c)Unreliable, connectionless d)None of th
16、e above 28. TCP stands for A a)Transmission Control Protocol b)Trivial Connection Protocol c)Traffic Control Protocol d)Telephony Connection Protocol 29. UDP stands for C a)Universal Data Protocol b)Unreliable Datagram Protocol c)User Datagram Protocol 名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - -
17、- - - - - 名师精心整理 - - - - - - - 第 4 页，共 6 页 - - - - - - - - - d)Ultimate Data Protocol 30. Both TCP and UDP belong to which layer of the OSI mode? B a)Session b)Transport c)Network d)Data Link 31. UDP offers which of the following benefits relative to TCP? A a)UDP consumes fewer computer resources by
18、 not maintaining connection state b)UDP supports a self-regulating “ throttle ” feature that prevents network saturation c)UDP guarantees that Individual packets of a transmission will arrive “ in order ”d)None of the above 32. What is the maximum recommended length of twisted-pair Ethernet cables u
19、sed in home or business networks? B a)10 meters b)100 meters c)1000 meters d)Other 33. On Ethernet LANs, the Ethernet address is also known as theB a)IP address b)MAC address c)Virtual address d)Other 34. How long is a MAC address? B a)4 bytes b)6 bytes c)8 bytes d)10 bytes 35. What is the basic uni
20、t of Ethernet traffic? B a)File b)Frame c)Packet d)Stream 36. CSMA/CD stands for A a)Carrier Sense Multiple Access with Collision Detection b)Collision Sense Multiple Access with Carrier Detection c)Carrier Single-Multiple Access with Collision Detection d)Collision Single-Multiple Access with Carri
21、er Detection 名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 5 页，共 6 页 - - - - - - - - - 37. Which of the following is a routing protocol? a)ARP b)DNS c)BGP d)SMTP 38. Which of the following algorithm has the so calledcount-to-infinity problem? C a)Flooding algorithm
22、b)Link-state algorithm c)Distance vector algorithm d)None of the above 39. Which of the following algorithm does BGP use? C a)Flooding algorithm b)Link-state algorithm c)Distance vector algorithm d)None of the above 40. Which of the following protocol does ICMP run over? C a)TCP b)UDP c)IP d)Ethernet 41. Which of the following describes the TCP connection establishing mechanism? C a)One-way-handshake b)Two-way-handshake c)Three-way-handshake d)Four-way-handshake 名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 6 页，共 6 页 - - - - - - - - -