单选

● (67) is

a sequence of letters and digits，the first character must
be a letter. (67) A．An identifier
B．A string
C．An array
D．A program

试题出自试卷《2011年程序员考试考前密卷（八）-上午试题》

参考答案

查看试卷详情

相关试题

●TCP service is obt
- ained
- by having both the sender and the re
- ceiver create an
- d points，which are called (75) ． (75) A．Network address
- B．supenet address
- C．socket
- D．IP address
点击查看答案
● (74) is
- a contiguous，num
- bered set of variables of a given base type，whi
- ch can be use
- d and passed to functions as a unit. (74) A．Record
- B．Array
- C．Parameter
- D．File
点击查看答案
●In C l
- anguage，the usual expression statements are&n
- bsp;(73) or fun
- ction calls. (73) A．I/Os
- B．operations
- C．assignments
- D．evaluations
点击查看答案
●
- An instruction is made up of operations that&n
- bsp;(68) the fun
- ction to be performe
- d and operands that represent the data to be operated on.For example，if an instruction is to perform. the operation of (69) two numbers，it must know (70) the two numbers are.The processor′s job is to (71) in
- B．skip
- C．smoke
- D．specify (69) A．add
- B．added
- C．adding
- D．additional (70) A．when
点击查看答案
● (67) is
- a sequence of letters and digits，the first character must
- be a letter. (67) A．An identifier
- B．A string
- C．An array
- D．A program
点击查看答案
The CPU is composed of two components，which are () ．
- A.asthmatics logic unit and controller
- B.arithmetic logic unit and memory
- C.memory and controller
- D.controller and storage
点击查看答案
●数字签名技术可以用于对用户身份或信息的真实性进行验证与鉴定，但是下列的 (64) 行为不能用数字签名技术解决。
(64)
- A．抵赖 &n
- bsp; B．篡改
- C．伪造
- D．窃听
点击查看答案
●依法受到保护的计算机软件作品必须符合下述条件 (65) 。
(65)
- A．可被感知
- B．逻辑合理
- C．独立创作
- D．A、B和C
点击查看答案
OSI(Open System Interconnection)安全体系方案X.800将安全服务定义为通信开放系统协议层提供的服务，用来保证系统或数据传输有足够的安全性。X.800定义了5类可选的安全服务。下列相关的选项中不属于这5类安全服务的是 () 。
- A.数据保密性
- B.认证
- C.访问控制
- D.数据压缩
点击查看答案
●网络安全的基本目标是实现信息的 (62) 。
(62)
- A．完整性、机密性、可用性、合法性 &n
- bsp; B．保密性、完整性、有效性、防病毒保护
- C．保密性、完整性、合法性、防病毒保护
- D．机密性、可用性、实用性、有效性
点击查看答案