【名词&注释】
网络结构(network structure)、完整性(integrity)、机密性(confidentiality)、巨大影响(great influence)、阻塞状态(blocking state)、找不到(not to find)
[判断题]密码技术可以保证信息的机密性和完整性，但是不能保证信息的确定性。()
查看答案&解析
举一反三：
[单选题]
B． 可以优化网络结构
C． 会对网络产生巨大影响，应避免出现
D． 会影响网络，可使用生成树协议解决
A. 可以有效提高网络的吞吐率B． 可以优化网络结构
B. 会对网络产生巨大影响，应避免出现
C. 会影响网络，可使用生成树协议解决
[单选题]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.
A. HDLC
B. Frame. Relay
C. X.25
D. X.21
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