20春学期《计算机基础》在线平时作业3

adminhan

电子邮件是Internet应用最广泛的服务项目，通常采用的传输协议是____。
A:SMTP
B:TCP/IP
C:CSMA/CD
D:IPX/SPX

计算机网络的功能主要体现在信息交换、资源共享和________等几个方面。
A:分布式处理
B:网络操作系统
C:网络硬件
D:网络软件

在Word编辑状态下，对于选定的文字不能进行的设置是
A:加下划线
B:加着重号
C:动态效果
D:自动版式

计算机病毒是指能够侵入计算机系统并在计算机系统中潜伏、传播、破坏系统正常工作的一种具有繁殖能力的()。
A:指令
B:程序
C:设备
D:文件

Excel工作簿是计算和存储数据的()，每一个工作簿都可以包含多张工作表，因此可在单个文件中管理各种类型的相关信息。
A:文件
B:表格
C:图形
D:文档

我国第一台电子计算机诞生于____年。
A:1948年
B:1958年
C:1966年
D:1968年

CAM是____的缩写。
A:计算机辅助设计
B:计算机辅助制造
C:计算机辅助教学
D:计算机辅助模拟

社交网络含义不包括____。
A:硬件
B:软件
C:服务及应用
D:政府机构

在电子邮件中所包含的信息是()。
A:只能是文字
B:只能是文字与图像信息
C:只能是文字与声音信息
D:可以是文字、声音和图形图像信息

连接到WWW页面的协议是：()。
A:HTML
B:HTTP
C:SMTP
D:DNS

当前气象预报已广泛采用数值预报方法，这种预报方法会涉及计算机应用中的____。
A:科学计算和信息处理
B:科学计算和辅助设计
C:科学计算和过程控制
D:数据处理和辅助设计

计算机辅助设计的英文缩写是()。
A:CAD
B:CAI
C:CAM
D:CAT

在计算机领域中通常用MIPS来描述____。
A:计算机的运算速度
B:计算机的可靠性
C:计算机的运行性
D:计算机的可扩充性

下列关于Word“文档窗口”的叙述中，错误的是
A:可以同时打开多个文档窗口
B:可以同时关闭多个文档窗口
C:一个文档窗口最多可以拆分为2个窗口
D:可以同时编辑的文档窗口最多只能有2个

下列描述中，正确的是____。
A:1KB=1024*1024bytes
B:1MB=1024*1024bytes
C:1MB=1024bytes
D:1KB=1024MB

影响局域网性能的主要因素是局域网的()。
A:通信线路
B:路由器
C:中继器
D:调制解调器

在Excel中，各运算符号的优先级由高到低顺序为()。
A:算术运算符、比较运算符、文本运算符和引用运算符
B:文本运算符、算术运算符、比较运算符和引用运算符
C:引用运算符、算术运算符、文本运算符、关系运算符
D:比较运算符、算术运算符、引用运算符、文本运算符

使网络服务器中充斥着大量要求回复的信息，消耗带宽，导致网络或系统停止正常服务，这属于()漏洞。
A:拒绝服务
B:文件共享
C:BIND漏洞
D:远程过程调用

向有限的空间输入超长的字符串是()攻击手段。
A:缓冲区溢出
B:网络监听
C:端口扫描
D:IP欺骗

电子邮件地址的一般格式为()。
A:用户名@域名
B:域名@用户名
C:IP地址@域名
D:域名@IP地址

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri; mso-bidi-font-family: 'Times New Roman'">下列关于局域网拓扑结构的叙述中，正确的有（</span><span style="FONT-FAMILY: Calibri; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'"> </span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri; mso-bidi-font-family: 'Times New Roman'">）。</span>
A:星形结构的中心站发生故障时，会导致整个网络停止工作。
B:<font face="宋体">环形结构网络中，若某台工作站故障，不会导致整个网络停止工作。</font>
C:总线结构网络中，若某台工作站故障，一般不影响整个网络的正常工作。
D:<font face="宋体">星形结构的中心站不会发生故障</font>

<span style="FONT-FAMILY: Calibri; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'" lang="EN-US">USB</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri; mso-bidi-font-family: 'Times New Roman'">总线具有很强的负载携带能力，采用链式连接方式可以串联</span><span style="FONT-FAMILY: Calibri; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'" lang="EN-US">l27</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri; mso-bidi-font-family: 'Times New Roman'">个外部设备，同时具有（</span><span style="FONT-FAMILY: Calibri; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'"> </span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri; mso-bidi-font-family: 'Times New Roman'">）功能。</span>
A:<font face="宋体">所见即所得</font>
B:即插即用
C:<font face="宋体">热插拔</font>
D:重新启动

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri; mso-bidi-font-family: 'Times New Roman'">以下（</span><span style="FONT-FAMILY: Calibri; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'"> </span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri; mso-bidi-font-family: 'Times New Roman'">）是常见的计算机的局域网络的拓扑结构。</span>
A:<span style="FONT-FAMILY: 宋体; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri; mso-bidi-font-family: 'Times New Roman'">星形结构</span>
B:<span style="FONT-FAMILY: 宋体; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri; mso-bidi-font-family: 'Times New Roman'">交叉结构</span>
C:<font face="宋体">关系结构</font>
D:总线结构

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri; mso-bidi-font-family: 'Times New Roman'">下列关于计算机硬件组成的说法中，（</span><span style="FONT-FAMILY: Calibri; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'"> </span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri; mso-bidi-font-family: 'Times New Roman'">）是正确的。</span>
A:<span style="FONT-FAMILY: 宋体; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri; mso-bidi-font-family: 'Times New Roman'">主机和外设</span>
B:运算器、控制器和<span style="FONT-FAMILY: Calibri; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'" lang="EN-US">I/O</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri; mso-bidi-font-family: 'Times New Roman'">设备</span>
C:<span style="FONT-FAMILY: Calibri; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'" lang="EN-US">CPU</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri; mso-bidi-font-family: 'Times New Roman'">和</span><span style="FONT-FAMILY: Calibri; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'" lang="EN-US">I/O</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri; mso-bidi-font-family: 'Times New Roman'">设备</span>
D:运算器、控制器、存储器、输入设备和输出设备

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri; mso-bidi-font-family: 'Times New Roman'">在</span><span style="FONT-FAMILY: Calibri; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'" lang="EN-US">Windows </span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri; mso-bidi-font-family: 'Times New Roman'">中，下面有关打印机方面的叙述中，（</span><span style="FONT-FAMILY: Calibri; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'"> </span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri; mso-bidi-font-family: 'Times New Roman'">）是不正确的。</span>
A:局域网上连接的打印机称为本地打印机
B:<font face="宋体">本机上连接的打印机称为本地打印机</font>
C:使用控制面板可以安装打印机
D:<font face="宋体">一台微机只能安装一种打印驱动程序</font>

Facebook：是一个社交网络服务网站，于2004年2月4日上线,目前中国最大的社交网络。
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'">声卡的主要功能是播放</span><span style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">VCD</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'">。</span>
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 9pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">所谓多媒体是指各种信息的编码。</span>
A:错误
B:正确

压缩与解压缩速度：与压缩方法和压缩编码的算法有关，一般压缩比解压缩计算量大，因而压缩比解压缩慢。
A:错误
B:正确

工具栏的作用等价于菜单栏。
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'">相对于广域网，局域网的传输误差率很高。</span>
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'">在</span><span style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">Excel</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 9pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'">中，删除工作表中对图表有链接的数据，图表将自动删除相应的数据。</span>
A:错误
B:正确