虚拟专用网VPN(Virtual Private Network)是一种组网技术,但不是一种网络安全技术。
第1题:
You have a computer that runs Windows Vista.You connect to your company’s network by using a virtual private network (VPN) connection. You notice that when you establish the VPN connection, you are unable to access Internet Web sites. When you disconnect the VPN connection, you can access Internet Web sites.You need to access Internet Web sites while you are connected to the VPN connection.What should you do?()
A.A
B.B
C.C
D.D
第2题:
现在具有加密/解密功能的路由器使人们通过互联网连接这些局域网成为可能,这就是我们通常所说的虚拟专用网(Virtual Private Network,VPN),下列各项属于VPN所采用的加密手段的是(7)。
A.具有加密功能的防火墙
B.单独的加密设备
C.具有加密功能的路由器
D.VPN内的各台主机对各自的信息进行相应的加密
第3题:
阅读以下说明,回答问题1~4,将解答填入对应栏内。
虚拟专用网是虚拟私有网络(Virtual Private Network,VPN)的简称,它是一种利用公共网络来构建的私有专用网络。对于构建VPN来说,网络隧道(Tunneling)技术是个关键技术。主要有两种类型的隧道协议:一种二层隧道协议,如PPTP、L2TP;另一种是三层隧道协议,GRE、IPsec。另外,还有第四层隧道协议,如SSL VPN。图3-1所示的是某公司的总部与其分支机构连接的示意图。
针对不同的用户要求,VPN有三种解决方案:(1)、(2)和(3)。根据这三种解决方案的特点,该方案应该采用(2)。
第4题:
VPN,也就是虚拟专用网络,指的是在公用网络上建立专用网络的技术。
第5题:
在通信专业中,描述网络模式的缩写词VPN的英文全称是(),“时隙”英文通常翻译为()。
A.Video Protected Network B.Visual Private Network C.Virtual Private Network D.Virtual Protected Network
A.frame B.slot C.group D.set
第6题:
A.A
B.B
C.C
D.D
第7题:
A service provider wants to prevent the repeat of a denial of service (DoS) attack that recently disabled Internet access for several thousand customers. Which Cisco solution best matches this business need?()
A.Network security
B.Virtual Private Network (VPN)
C.Wireless network
D.Content networking
第8题:
You have a computer that runs Windows Vista. You create a virtual private network (VPN) connection between the computer and your company’s network.You notice that while the computer is connected through the VPN connection, users on the company network can access shared folders on the computer.You need to prevent network users from accessing your shared folders when you are connected to the company’s network by using the VPN connection.What should you do?()
A.A
B.B
C.C
D.D
第9题:
某公司的对外公开网站主页经常被黑客攻击后修改主页内容,该公司应当购买并部署下面哪个设备()?
第10题:
A service provider wants to prevent the repeat of a denial of service (DoS) attack that recently disabled Internet access for several thousand customers. Which Cisco solution best matches this business need?()