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第71题      2018年下半年 网络工程师 上午试卷 综合知识
所属知识点   专业英语       
考点辞典   route   net

 
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 zero.However, for this scheme, all the machines must have synchronized clocks and must know how long it takes for a datagram to go from one machine to another.Today, this field is used mostly to control the (72) number of hops (routers) visited by the datagram. When a source host sends the datagram, it (73) a number in this field.Each router that processes the datagram decrements this number by 1.If this value, after being decremented, is zero, the router discards the datagram.This field is needed because routing tables in the Internet can become corrupted.A datagram may travel between two or more routers for a long time without ever getting delivered to the (74).This field limits the (75) of a datagram.
 
 
  A.  received
 
  B.  discarded
 
  C.  rejected
 
  D.  transferred
 
 
 

  专业英语 知识点 更多相关真题:    更多>  
 
  第73题    2017年下半年  
   57%
routing in circuit-switching networks has traditionally involved a static routing strategy with the use of(71)paths to respond to increased load . modern routing strategies provi..
  第75题    2016年上半年  
   67%
Without proper safeguards, every part of a network is vulnerable to a security breach or unauthorized activity from (71), competitors, or even employees. Many of the organization..
  第75题    2018年上半年  
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With circuit switching, a (71)path is established between two stations for communication . Switching and transmission resources within the network are (72)for the exclusive use..
 

route
  route命令的功能是显示和修改本地的IP路由表。如果不带参数,则给出帮助信息。
  1)语法格式
  
  2)参数说明
......
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。
......

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