1、Network firewalls are security devices used to stop or mitigate （71) access to private networks connected to the Internet, especially intranets.The only traffic allowed on the networks is defined via firewall (72)-any other traffic attempting to access the network is blocked.Network firewalls sit at the (73) line of a network,acting as a communicationsliaison between intemal and extemal devics,When properly configured,a firewall alws users to access any of the resources they need while simultaneously keeping out unwanted access,In addition toliniting access to a protected computer and network, a firewall can (74) all taffic coming into or leaving a network,and manage remote access to a private network through secure authertication crtificates and logins. (75) firewalls examine every packet that passes through the network and then accept or deny it as defined by rules set by the user
A、 front
B、 back
C、 second
D、 last
答案:A
答题解析:
网络防火墙是用于阻止或阻止未授权访问连接到互联网的专用网络的安全设备，尤其是内部网。网络上唯一允许的流量是通过防火墙安全策略定义的——任何其他试图访问网络的流量都会被阻止。网络防火墙位于网络的最前线，用作通信内部和外部设备之间的联系，当配置正确时，防火墙允许用户访问他们需要的任何资源，同时防止不必要的访问。除了初始化对受保护计算机和网络的访问之外，防火墙还可以阻断进入或离开网络的所有事务，并通过安全认证证书和登录管理对专用网络的远程访问。包过滤防火墙检查通过网络的每个数据包，然后根据用户设置的规则进行接受或拒绝。
2、Network firewalls are security devices used to stop or mitigate （71) access to private networks connected to the Internet, especially intranets.The only traffic allowed on the networks is defined via firewall (72)-any other traffic attempting to access the network is blocked.Network firewalls sit at the (73) line of a network,acting as a communicationsliaison between intemal and extemal devics,When properly configured,a firewall alws users to access any of the resources they need while simultaneously keeping out unwanted access,In addition toliniting access to a protected computer and network, a firewall can (74) all taffic coming into or leaving a network,and manage remote access to a private network through secure authertication crtificates and logins. (75) firewalls examine every packet that passes through the network and then accept or deny it as defined by rules set by the user
A、 reply
B、 block
C、 log
D、 encrypt
答案:B
答题解析:
网络防火墙是用于阻止或阻止未授权访问连接到互联网的专用网络的安全设备，尤其是内部网。网络上唯一允许的流量是通过防火墙安全策略定义的——任何其他试图访问网络的流量都会被阻止。网络防火墙位于网络的最前线，用作通信内部和外部设备之间的联系，当配置正确时，防火墙允许用户访问他们需要的任何资源，同时防止不必要的访问。除了初始化对受保护计算机和网络的访问之外，防火墙还可以阻断进入或离开网络的所有事务，并通过安全认证证书和登录管理对专用网络的远程访问。包过滤防火墙检查通过网络的每个数据包，然后根据用户设置的规则进行接受或拒绝。
3、Network firewalls are security devices used to stop or mitigate （71) access to private networks connected to the Internet, especially intranets.The only traffic allowed on the networks is defined via firewall (72)-any other traffic attempting to access the network is blocked.Network firewalls sit at the (73) line of a network,acting as a communicationsliaison between intemal and extemal devics,When properly configured,a firewall alws users to access any of the resources they need while simultaneously keeping out unwanted access,In addition toliniting access to a protected computer and network, a firewall can (74) all taffic coming into or leaving a network,and manage remote access to a private network through secure authertication crtificates and logins. (75) firewalls examine every packet that passes through the network and then accept or deny it as defined by rules set by the user
A、 Application-layer
B、 Packet filtering
C、 Circuit-level
D、 Proxy server
答案:B
答题解析:
网络防火墙是用于阻止或阻止未授权访问连接到互联网的专用网络的安全设备，尤其是内部网。网络上唯一允许的流量是通过防火墙安全策略定义的——任何其他试图访问网络的流量都会被阻止。网络防火墙位于网络的最前线，用作通信内部和外部设备之间的联系，当配置正确时，防火墙允许用户访问他们需要的任何资源，同时防止不必要的访问。除了初始化对受保护计算机和网络的访问之外，防火墙还可以阻断进入或离开网络的所有事务，并通过安全认证证书和登录管理对专用网络的远程访问。包过滤防火墙检查通过网络的每个数据包，然后根据用户设置的规则进行接受或拒绝。
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