摘要：对于【网络管理员】软考考试而言，试题无疑是最重要的学习资料之一。在软考备考过程中，吃透试题、掌握试题所考知识点、熟悉试题的出题思路，对我们提升分数的效果是最明显的，通过对试题的反复练习，还可以查漏补缺。今天，给大家带来【2018年下半年网络管理员考试试题上午】部分试题的详解，一起来看看吧~



1、In multipoint networks , there are tree persistence methods when a station finds a channel busy.in the 1-persistent method,after the station finds the line idle,it sends its frame immediately.this method has the （ ） chance of collision because two or more stations may find the line （ ） and send their frames immediately. In the nonpersistent method , a station that has a frame to send （ ） the line . If the line is idle , it sends immediately If the line is not idle , it waits a （请作答此空） amount of time and then senses the line again.The nonpersistent approach （  ） the chance of collision because it is unlikely that two or more stations will wait the same amount of time and retry to send simultaneously The p-persistent approach combines the advantages of the other two strategies . It reduces the chance of collision and improves efficiency.
A、random
B、big
C、medium
D、small

答案:A
答题解析:无

2、In multipoint networks , there are tree persistence methods when a station finds a channel busy.in the 1-persistent method,after the station finds the line idle,it sends its frame immediately.this method has the （ ） chance of collision because two or more stations may find the line （ ） and send their frames immediately. In the nonpersistent method , a station that has a frame to send （ ） the line . If the line is idle , it sends immediately If the line is not idle , it waits a （ ） amount of time and then senses the line again.The nonpersistent approach （请作答此空） the chance of collision because it is unlikely that two or more stations will wait the same amount of time and retry to send simultaneously The p-persistent approach combines the advantages of the other two strategies . It reduces the chance of collision and improves efficiency.
A、increases
B、equalizes
C、reduces
D、cancels

答案:C
答题解析:无

3、在Windows命令提示窗口中，执行（  ）命令得到以下运行结果，该命令的作用是（请作答此空）。
A、查看DNS工作状态
B、查看IP地址配置信息
C、测试目标地址网络连通性
D、查看到达目的地址的路径

答案:C
答题解析:ping命令的作用是测试两台主机之间的连通性，因此选C

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