is a connectionless TCP/IP transport layer protocol.
A. FTP
B. UDP
C. 1P
D. ICMP
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is a multimedia Internet service that allows users to traverse the Internet by moving
A. FTP
B. WWW
C. E-mail
D. TCP
A(72) is a data communication system that allows a number of independent devices to communications directly with each other in a limited geographic area.
A. LAN
B. WAN
C. Internet
D. Ethernet
is a TCP/IP application service that converts user-friendly names to IP address.
ARP
B. RARP
C. WWW
DNS
A.所有用户在同一时间占用不同的带宽资源B.所有用户在不同时间占用同样的频率宽度C.所有用户
A. 所有用户在同一时间占用不同的带宽资源
B. 所有用户在不同时间占用同样的频率宽度
C. 所有用户在任何时间占用相同的带宽资源
D. 所有频率带宽一直被同一个用户占用