【名词&注释】
无线通信(wireless communication)、软件开发(software development)、技术发展(technology development)、基本知识(basic knowledge)、摩托罗拉(motorola)、无线城域网(wireless man)、无线连接(wireless link)、参考答案、全体会议(plenary meeting)、无线接口标准(wireless interface standards)
[单选题]在通常情况下，下面的表达中不可以作为关系数据库的关系的是()
A. R1(学号，姓名，性别)
B. R2(学号，姓名，班级号)
C. R3(学号，姓名，宿舍号)
D. R4(学号，姓名，简历)
查看答案&解析
点击获取本科目所有试题
举一反三：
[单选题]从目前的情况看，对所有的计算机系统来说，以下哪种威胁是最为严重的，可能造成巨大的损害?
A. 没有充分训练或粗心的用户
B. 第三方
C. 黑客
D. 心怀不满的雇员
[单选题]分布式数据库能够提高某些查询效率是因为其具有(61)。
A. 数据分片
B. 数据复本
C. 基于同构模式
D. 基于异构模式
[单选题]关于进程的状态变化，(25)是不可能发生的。
A. 等待态→运行态
B. 运行态→等待态
C. 就绪态→运行态
D. 运行态→就绪态
[单选题]
B． 条件组合覆盖
C． 语句覆盖
D． 判定及条件覆盖
A. 条件覆盖B． 条件组合覆盖
B. 语句覆盖
C. 判定及条件覆盖
[单选题]面向对象(Obiect-Oriented)方法是一种非常实用的软件开发方法。一个对象通常由(23)3部分组成。
A. 对象名、类、消息
B. 名称、属性、函数
C. 对象名、属性、方法
D. 名称、消息、操作
[多选题]Oracle实例主要由哪两部分组成：（）
A. 内存
B. Sharepoolbuffer
C. 后台进程
D. pmon和smon
[单选题]● 在3G 标准中， （57） 技术是由中国独立制定的。（57）
A. WCDMA
B. TD-SCDMA
C. WiMax
D. CDMA2000
[多选题]● At a basic level, cloud computing is simply a means of delivering IT resources as(71) Almost all IT resources can be delivered as a cloud service: applications, compute power, storage capacity, networking, programming tools, even communication services and collaboration (72).Cloud computing began as large-scale Internet service providers such as Google, Amazon,and others built out their infrastructure. An architecture emerged: massively scaled, (73)distributed system resources, abstracted as virtual IT services and managed as continuously configured, pooled resources. In this architecture, the data is mostly resident on (74)“somewhere on the Intemet” and the application runs on both the“cloud servers” and the user's browser.
A. Both clouds and grids are built to scale horizontally very efficiently. Both are built to withstand failures of(75)elements or nodes. Both are charged on a per-use basis. But while grids typically process batch jobs, with a defined start and end point, cloud services can be continuous. What's more, clouds expand the tyes of resources available — file storage,databases, and Web services — and extend the applicability to Web and enterprise applications.
B. hardware
C. computers
D. services
E. software
F. computers
G. disks
H. machines
I. tools
J. horizontally
K. vertically
L. inclined
M. decreasingly
N. clients
O. middleware
P. servers
Q. hard disks
R. entire
S. individual
T. general
U. separate
[单选题]有如下程序段，设n为3的倍数。则语句③的执行频度为______。 Lnt i,j ; ① for(i=i;in; i++){ ② if(3*i=n){ ③ for(j=3*i;jn;j++){④ x++;y=3*x+2; } } }
A. n(n+1)/6
B. n(n-1)/6
C. n2/6
D. (n+1)(n-1)/6
本文链接：https://www.zhukaozhuanjia.com/download/4dxlxw.html
