题目内容
● 当网络出现连接故障时，一般应首先检查___(64)___。
(64)A．系统病毒 B．路由配置 C．物理连通性 D．主机故障
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● ___(68)___ are those programs that help find the information you are trying to locate on the WWW.
(68)A. Windows B. Search Engines C. Web Sites D. Web Pages
● A query is used to search through the database to locate a particular record or records,which conform. to specified ___(75)___
(75)A. criteria B. standards C. methods D. conditions
● Firewall is a ___(74)___ mechanism used by organizations to protect their LANs from
Internet.
(74)A. reliable B. stable C. peaceful D. security
● 当网络出现连接故障时，一般应首先检查 (65) 。
(65)
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