2. 计算机
  3. SDLC was invented by IBM to replace the older Bisynchronous protocol for wide area connections between IBM equipment. A varietio

SDLC was invented by IBM to replace the older Bisynchronous protocol for wide area connections between IBM equipment. A varietio

admin2009-02-15  81
问题 SDLC was invented by IBM to replace the older Bisynchronous protocol for wide area connections between IBM equipment. A varietion of the(71)protocol called NRM is essentially the same as SDLC.
   SDLC is(72)protocol like HDLC, Frame Relay or X.25.An SDLC network is made up of(73)that controls all communications, and(74).It is capable of(75).operation, but almost all practical applications are strictly half duplex.
选项 A、HDLC
B、Frame Relay
C、X.25
D、X.21
答案A
解析
转载请注明原文地址:https://kaotiyun.com/show/SsJZ777K
本试题收录于： 网络工程师上午基础知识考试题库软考中级分类
0

网络工程师上午基础知识考试

软考中级

相关试题推荐
随机试题
最新回复(0)