全部科目 > 网络工程师 >
2021年上半年 上午试卷 综合知识
第 71 题
知识点 net  
章/节 计算机专业英语  
 
 
Network Addres Translation(NAT) is an Internet standard that enbles a local-area network to use one set of IP addresses for internet traffic and another set of (71) IP addresses for external traffic. 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. NAT remaps an IP address space into another by modifying network address information in the (73) header of packets while they are in transit across a traffic routing device. It has become an essential tool in conserving global address space in the face of (74) address exhaustion. When a packet traverses outside the local network, NAT converts the private IP address to a public IP address. If NAT runs out of public addresses, the packets will be dropped and (75)"host unreachable"packets will be sent.
 
  A.  local
 
  B.  private
 
  C.  public
 
  D.  dynamic




 
 
相关试题     计算机专业英语 

  第74题    2013年上半年  
Traditional IP packet forwarding analyzes the（71）IP address contained in then network layee header of each packet as the packet rravels from its sou..

  第75题    2016年上半年  
Without proper safeguards, every part of a network is vulnerable to a security breach or unauthorized activity from （71）, competitors, or even emplo..

  第73题    2018年下半年  
The TTL field was originally designed to hold a time stamp, which was decremented by each visited router.The datagram was (71) when the value became z..

 
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。



更多复习资料
请登录电脑版软考在线 www.rkpass.cn

京B2-20210865 | 京ICP备2020040059号-5
京公网安备 11010502032051号 | 营业执照
 Copyright ©2000-2025 All Rights Reserved
软考在线版权所有