题目内容

● Firewall is a _(74)_ mechanism used by organizations to protect their LANs from
Internet.
(74)A. reliable B. stable C. peaceful D. security

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● 当网络出现连接故障时，一般应首先检查 (65) 。
(65)

A. 系统病毒
B. 路由配置
C. 物理连通性
D. 主机故障

● Each program module is compiled separately and the resulting _(71)_ files are linked ether to make an executable application.
(71)A. assembler B. source C. library D. object

● In C language, a _(67)_ is a series of characters enclosed in double quotes.
(67)A. matrix B. string C. program D. stream

● _(66)_ is a device that converts images to digital format.
(66)A. Copier B. Printer C. Scanner D. Display