For each blank, choose the best answer from the four choices and write down on the answer sheet.
(11) is a protocol that a host uses to inform a router when it joins Or leaves an Internet multicast group.
(12) is an error detection code that most data communication networks use.
(13) is an interior gateway protocol that uses a distance vector algorithm to propagate routing information.
(14) is a transfer mode in which all types of information are organized into fixed form cells on an asynchronous or non-periodic basis over a range of media.
(15) is an identifier of a web page.
A．HTYP
B．URL
C．HTML
D．TAG
参考答案：
解析：[暂无答案]
ICMP是一种主机用来告知路由器它离开或者加入了一个Internet组播组的协议。
CRC是一种大多数网络都使用的检错码。
RIP是一种内部网关协议，它使用距离矢量算法来更新路由信息。
ATM是一种异步传输模式，所有类型的信息都被封装成信元。
URL是一种网页的标识。