中国海洋大学940计算机网络与安全2018年考研初试真题

2018年考研英语二真题与答案解析

2018年考研英语二真题及答案解析 Section I Use of English Directions： Read the following text. Choose the best word (s) for each numbered blank and mark A, B, C or D on the ANSWER SHEET. (10 points) why do people read negative Internet comments and do other things that will obviously be painful?Because humans have an inherent need to 1 uncertainty, according to a recent study in Psychological Science. The new research reveals that the need to know is so strong that people wiill 2 to satisfy their curiosity even when it is clear the answer will 3. In a series of four experiments, behavioral scientists at the University of Chicago and the Wisconsin School of Business tested students' willingness to 4 themselves to unpleasant stimuli in an effort to satisfy curiosity. For one 5 each participant was shown a pile of pens that the researcher claimed were from a previous experiment. The twist?Half of the pens would 6 an electric shock when clicked. Twenty-seven students were told which pens were electrified;another twe nty-seven were told only that some were electrified 7 left alone in the room, the students who did not know which ones would shock th em clicked more pens and incurred more shocks than the students who knew what would 8 .Subsequent experiments reproduced this effect wit h other stimuli, 9 the sound of fingernails on a chalkboard and pho tographs of disgusting insects. The drive to 10 is deeply rooted in humans,much the same as the ba sic drives for 11 or shelter,says Christopher Hsee of the University of Chicago. Curiosity is often considered a good instinct-it can 12 new scientific advances, for instance-but sometimes such 13 can back fire.The insight that curiosity can drive you to do 14 things is a profound one.Unhealthy curiosity is possible to 15 ,however. In a f inal experiment,participants who were encouraged to 16 how they would

计算机网络技术基础试题库(含答案)

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②网络工作站(workstation，用户使用的终端计算机)； ③网络适配器（网卡，网络连接的接口电路板，属于通信子网设备）； ④网络传输介质（物理连接线路）； ⑤网络连接与互联设备（收发器、中继器、集线器、网桥、交换机、路由器和网关等）。其他组件：网络资源、用户、协议。 6．网络互联设备主要有哪些？其主要作用各是什么？答：（1）中继器、集线器，主要作用：不同电缆段之间信号的复制、整形、再生和转发；（2）网桥、交换机，主要作用：数据存储、接收，根据物理地址进行过滤和有目的的转发数据帧；（3）路由器，主要作用：路径选择、拥塞控制和控制广播信息；（4）网关，主要作用：传输层及以上各层。 7．对三种使用共享资源的方法简要概括。答：直接利用“网上邻居”浏览工作组中各计算机已经开放的共享资源；直接在“我的电脑”地址栏或“开始”-“运行”中输入“\\被访问的电脑名（或IP地址）”；映射驱动器：将共享资源映射为本机磁盘。 8．请解释下图中各参数意义。

计算机网络技术考试试题库含答案

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合 D、由通信线路连接起来的网络系统 6. 局域网的硬件组成包括网络服务器、件。A、发送设备和接收设备站C配套的插头和插座 7. 按照对介质存取方法，局域网可以分为以太网、网B、树型网、网络适配器、网络传输介质和网络连接部网络工作代码转换设备 A、星型 B、 D、 ___ 和令牌总线网。 C、令牌网 D、 8. 为实现计算机网络的一个网段的通信电缆长度的延伸，应选择桥关 9. 计算机网络的拓扑结构是指式构A、网 B、B、中继器 D、路由器 ____ 。A计算机网络的物理连接形计算机网络的协议集合C计算机网络的体系结 D、计算机网络的物理组成 C、网 10. _________________________ TCP/IP协议的IP层是指_____________________ 。 A、应用层 B、传输层 11. 下列_____ 信号发送不需编码。 A、数字数据模拟信号发送 C、模拟数据模拟信号发送C、网络层 D、网络接口层 12. A、Admi nistrators B> groups C、every one E、数字数据数字信号发送D、模拟数据数字信号发送组成员。 D、guest 13. Win dows NT2000系统安装时，自动产生的管理员用户名是 A、guest administrator D、（CSMA/CD ），只适用于 A令牌总线型 B、IUSR_NT everyone14. 具有冲突检测的载波侦听多路访问技术 ___ 网络拓朴结构。 B、环型 C、总线型 D、网型 15. 分布在一座大楼或一集中建筑群中的网络可称为_________ A LAN B、广域网C、公用网D、专用网

中国海洋940计算机网络考试大纲

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地址转换NAT? 第5章运输层主要内容：运输层协议概述、用户数据报协议UDP、传输控制协议TCP概述、可靠传输的工作原理、TCP报文段的首部格式、TCP可靠传输的实现、TCP的流量控制、TCP的拥塞控制、TCP的运输连接管理第6章应用层主要内容：域名系统DNS、文件传送协议、远程终端协议TELNET、万维网WWW、电子邮件、动态主机配置协议DHCP、简单网络管理协议SNMP、应用进程跨越网络的通信第7章网络安全主要内容：网络安全问题概述、两类密码体制、数字签名、鉴别、密钥分配、因特网使用的安全协议、链路加密与端到端加密、防火墙第8章因特网上的音频/视频服务主要内容：流式存储音频/视频、交互式音频/视频第9章无线网络无线局域网WLAN、无线个人区域网WPAN、无线城域网WMAN 第10章下一代因特网下一代网际协议IPv6、多协议标记交换MPLS、P2P文件共享保密概论一、考试性质《保密概论》是中国海洋大学保密科学与技术和计算机技术专业保密与信息安全方向硕士研究生入学复试考试的专业基础课程。二、考察目标本考试旨在三个层次上测试考生对保密学基本概念、基本原理、相关技术等知识掌握的程度和运用能力。三个层次的基本要求分别为： ?熟悉记忆：对保密学基本概念的记忆方面的考核。 ?分析判断：用保密学基本概念和原理来分析判断某一具体观点和问题。

2018年考研英语二真题与答案

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计算机网络技术试题及答案电子教案

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2018年考研英语二试题与答案解析(完整版)

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