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- ●The term, (74) loop, refers to a loop that is contained within another loop. (74)A.program
- B.nested
- C.statement,
- D.Network
- ●The (75)is designed specifically as a security system for preventing unauthorized communications between one computer network and another computer network. (75)A.firewall
- B.protocol
- C.hacker
- D.virus
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- ●A (73) is a named memory block. By using its name, we can refer to the data stored in the memory block. (73)A.word
- B.record
- C.program
- D.variable
- The(71)is a combination of keys that allows the user to activate a program function without clicking a series of menus options. (71)A.shortcut-key
- B.quick-key
- C.fast-key
- D.rapid-key
- ●In computer science ,a data (72) is a way of storing data in acomputer so that it can be used efficiently. (72)A.record
- B.file
- C.structure
- D.pool
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- ●ARP协议属于(69)层，其作用是(70)。 (69)A．传输层
- B．网络层
- C．会话层
- D．应用层 (70)A．由MAC地址求lP地址
- B．由IP地址求MAC地址
- C．由IP地址查域名
- D．由域名查IP地址
- ●IP地址块192.168.80.128/27包含了(67)个可用的主机地址。 (67)A.15
- B．16
- C．30
- D．32
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●内联网Intr
- ●内联网Intranet是利用因特网技术构建的企业内部网，其中必须包括(68)协议。 (68)A.TCP/IP
- B.IPX/SPX
- C.NetBuilder
- D.NetBIOS
- ●从任意初始值X<SUB>O</SUB>开始，通过迭代关系式X<SUB>n</SUB>=X<SUB>n-1</SUB>/2+1(n=1，2，…)，可形成序列X<SUB>1</SUB>，X<SUB>2</SUB>，…。该序列将收敛于(65)。 (65)A．1/2
- B.1
- C．3/2
- D．2
- ●在HTML文件中，(66)是段落标记对。 (66)A.
- B.
- C.<dl></dl>
- D.
