2008年下半年软考网络管理员答案(完整版)

2008年下半年软考网络管理员答案(完整版)

 

虽然51cto第一时间发布了软考答案，但是并不完整。由于本人今年参加了网络管理员考试，深知各位朋友期盼答案的急切心情。在51cto提供的专家答案中的评论中，很多热心的网友将答案补全（当然也包括我哦，虽然是匿名）。于是整理此文，将答案完整呈现给需要的朋友。祝君胜利！

 

注意：第14题正确答案为D

 

 

其中16-70题，参考了郭春柱老师所提供的答案，1-15题根据rickyling网友提示，我在今年的程序员考试中找到相应题目，并参考51cto提供的专家答案，整理得出。71-75也是根据51cto网友的提醒，在google中搜索得到原文，并且已经附加到评论之中。

 

原文如下

 

Each machine supporting TCP has a TCP transport entity, either a user process or part of the kernel that manages TCP streams and interfaces to the IP layer. A TCP entity accepts user data stream from local processes, break them up into pieces not exceeding 64K bytes ( in practice, usually about 1500 bytes), and sends each piece as a separate IP datagram. When IP datagrams containing TCP data arrive at a machine, they are given to the TCP entity, which reconstructs the original byte streams.    

The IP layer gives no guarantee that datagrams will be delivered properly, so it is up to TCP to time out and retransmit them as need to be. Datagrams that do arrive may well do so in the wrong order, it is also up to TCP to reassemble them into messages in the proper sequence. In short, TCP must furnish the reliability that most users want and that IP does not provide.

 

下午题整理中……敬请关注