题目内容

_________s cover large geographical areas.

A. LAN
B. MAN
C. PAN
D. WAN

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The Internet is a ________.

A. LAN
B. MAN
C. PAN
D. WAN

A network that is restricted to a single building is a ________.

A. LAN
B. MAN
C. PAN
D. WAN

________ is the protocol of the Internet.

A. DSL
B. Ethernet
C. Fiber
D. TCP/IP

Client/server computing links two or more computers in an arrangement in which powerful provide computing services for .

A. servers; other servers
B. servers; user PCs
C. user PCs; servers
D. user PCs; other user PCs