计算机导论-第6章-计算机网络
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Chapter 6 Computer Networks
Knowledge point:
6.1. OSI model
6.2. TCP/IP protocol
6.3. three types of networks
6.4. connecting devices
6.5. client-server model
Multiple-Choice Questions:
18. A is a set of rules that controls the interaction of different devices in a network
or internetwork. (6.2)
a. model
b. protocol
c. dialog
d. synchronization point
19. The OSI model has layers.(6.1)
a. five
b. six
c.seven
d. any of the above
20. The layer of the OSI model organizes bits into logical data units called frames.
(6.1)
a. physical
b. data-link
c. network
d. transport
21. The layer of the OSI model enables a person to access the network. (6.1)
a. data-link
b. transport
c. application
d. physical
22. The layer of the OSI model compresses and decompresses data. (6.1)
a. physical
b. data-link
c. session
d. presentation
23. The layer of the OSI model encrypts data. (6.1)
a. physical
b. data-link
c. session
d. presentation
24. The layer of the OSI model transmits a bit stream over a physical medium. (6.1)
a. physical
b. data-link
c. network
d. transport
25. The layer of the OSI model is responsible for node-to-node delivery of a frame
between two adjacent stations. (6.1)
a. transport
b. network
c. data-link
d. session
26. The layer of the OSI model is responsible for source-to-destination delivery of
the entire message. (6.1)
a. transport
b. network
c. data-link
d. session
27. The layer of the OSI model is responsible for source-to-destination delivery of
an individual packet. (6.1)
a. transport
b. network
c. data-link
d. session
28. The layer of the OSI model controls the dialog between users. (6.1)
a. transport
b. session
c. presentation
d. application
29. Through the layer of the OSI model, mail services and directory services are
available to network users. (6.1)
a. data connection
b. session
c. transport
d. application
30. Cindy’s Dessert Heaven is a bakery with four outlets in San Francisco. The outlets
need to communicate with each other. This type of network is probably a . (6.3)
a. LAN
b. MAN
c. WAN
d. none of the above
31. Kate’s Irish Potato Company is based in Ireland but has branches in Boston and
San Francisco. The branches communicate with each other through a . (6.3)
a. LAN