B。解析:选项A“browser”(浏览器)是用于浏览网页的工具,不能起到防止外部未经授权访问的作用;选项B“firewall”(防火墙)的作用就如同安全卫士,能阻止外部的未授权访问,符合题意;选项C“cookie”(小甜饼,此处指网络中的缓存文件)主要用于存储用户信息等,和防止外部入侵无关;选项D“protocol”(协议)是网络通信中的...
A security system for a computer network that has a plurality of devices connected thereto comprises a security subsystem, a master system and a secure link. The security subsystem is implemented on a first computer and is connected to at least some of the devices in the network. The security...
A. It helps hackers break into your computer. B. It blocks unauthorized access to your computer or network. C. It slows down your Internet speed without any benefits. D. It only protects against viruses. 相关知识点: 试题来源: 解析 B。解析:A选项,防火墙不是帮助黑客入侵电脑的,而是保护电脑...
Computer Network Security Vulnerabilities and Preventive Measures With the rapid economic development,increasing globalization of the information age,however,universal process of serving the people in the network,network ... Z Ping - 《Computer Cd Software & Applications》 被引量: 9发表: 2012年 Compute...
Main network equipment: A central switch (Cisco Catalyst 3560) that is responsible for connecting all internal devices and provides interfaces to the external network. Access to network equipment: Three access switches (Cisco Catalyst 2960)are located in different zones on the first and second floors...
Data encryption is one of the key technologies innetwork security. 数据加密技术是实现网络安全的关键技术之一. 互联网 Network securityprotocol is important factor in computernetwork security. 网络安全协议模型是计算机网络安全中的重要因素. 互联网
aComputer network security is gaining popularity among network practitioners, with organizations investing more time and money to protect their valuable information. Security has also recently attracted considerable attention from network researchers. There's no doubt about its importance and the growing nee...
计算机英语unit3 Computer Network Lesson4 Network Security Unit3ComputerNetwork Lesson4NetworkSecurity 网络安全 GoalGainknowledgeofnetworksecurity.LookandLearn 01writethecorrectwordbeloweachpicture.Dialogue 02麦克正向玛丽咨询怎样安装防火墙。NewWordsandPhrases1 spam[spæm]n.垃圾邮件firewall[ˈfaɪəwɔ...
Critical infrastructure security protects the computer systems, applications, networks, data and digital assets that a society depends on for national security, economic health and public safety. In the United States, the National Institute of Standards and Technology (NIST) offers a cybersecurity frame...
In subject area: Computer Science Network security refers to a set of security controls that protect cyber networks and the communication of data between hosts. It involves processes and techniques similar to host-based security but focuses on the network level. Network security includes firewalls, ...