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2020年下半年 上午试卷 综合知识
第 71 题
知识点 net  
章/节 专业英语  
 
 
Network Address (71) (NAT) is the process where a network device assigns a public address to a computer (or group of computers) inside a private network. The main use of NAT is to limit the number of public IP addresses that an organization or company must use, for both economy and (72) purposes. When a packet traverses outside the local network, MAT converts the private IP address to a public IP address. If NAT runs out of public addresses, the packets will be dropped and (73) “host unreachable” packets will be sent. Multiple private IP addresses are mapped to a pool of public IP addresses in (74) NAT. In contrast, many private IP addresses can also be translated to a single public IP address, and (75) are used to distinguish the traffics. This is most frequently used as it is cost effective as thousands of users can be connected to the Internet by using only one public IP address.
 
  A.  Translation
 
  B.  Transfer
 
  C.  Transform
 
  D.  Transition
 
 




 
 
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知识点讲解
· net
 
        net
        在网络管理中，最为常用的就是net命令家族。常用的net命令有以下几个。
        .net view命令：显示由指定的计算机共享的域、计算机或资源的列表。
        .net share：用于管理共享资源，使网络用户可以使用某一服务器上的资源。
        .net use命令：用于将计算机与共享的资源相连接或断开，或者显示关于计算机连接的信息。
        .net start命令：用于启动服务，或显示已启动服务的列表。
        .net stop命令：用于停止正在运行的服务。
        .net user命令：可用来添加或修改计算机上的用户账户，或者显示用户账户的信息。
        .net config命令：显示正在运行的可配置服务，或显示和更改服务器服务或工作站服务的设置。
        .net send命令：用于将消息（可以是中文）发送到网络上的其他用户、计算机或者消息名称上。
        .net localgroup命令：用于添加、显示或修改本地组。
        .net accounts命令：可用来更新用户账户数据库、更改密码及所有账户的登录要求。



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