首页
登录
从业资格
In multipoint networks , there are tree
In multipoint networks , there are tree
练习题库
2022-08-02
56
问题
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 ( ) 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.the lowestB.the highestC.possibleD.no
选项
A.the lowest
B.the highest
C.possible
D.no
答案
B
解析
在多点接入网络中,当一个站点发现信道繁忙时,采用三种坚持方法。在1坚持方法中,当站点发现线路空闲后,立即发送帧。 由于两个或多个站点可能同时发现线路空闲,并立即发送帧,因此该方法具有最高的冲突概率。在非坚持方法中,需要发送帧的站点监听线路,如果线路空闲,则立即发送。如果线路不是空闲的,它会随机等待一段时间,然后再次监听线路。非坚持的方法降低了冲突的可能性,因为两个或多个站点不太可能等待相同的时间后同时发送帧。P坚持的方法综合了前面两种方法的优点,它不但降低了冲突的可能性,还提高了效率。
转载请注明原文地址:https://tihaiku.com/congyezige/2430702.html
本试题收录于:
初级网络管理员题库软件水平考试初中高级分类
初级网络管理员
软件水平考试初中高级
相关试题推荐
Aninternetisacombinationofnetworks
Aninternetisacombinationofnetworks
Inmultipointnetworks,therearetree
Inmultipointnetworks,therearetree
Inmultipointnetworks,therearetree
Inmultipointnetworks,therearetree
Inmultipointnetworks,therearetree
Inmultipointnetworks,therearetree
Inmultipointnetworks,therearetree
Inmultipointnetworks,therearetree
随机试题
Alcoholhasapeculiarrelationshiptohappiness.Wedrinktocelebrate,but
Peoplewholiveinheavilyindustrializedareasdonotgetasmuchsunlight
反映医患之间权利关系的正确观点是:强调维护A.医院院长的权利 B.护士的权利
A
阅读下面的文章,回答题。 四堡雕版 冯骥才 ①心里一团如花似锦的猜想,在四
请阅读Passage1,完成第小题。 Passage1 TheBrit
砂炒后趁热用醋浸法炮制的药材是A:鳖甲B:鸡内金C:骨碎补D:狗脊E:马
机载侧视雷达方位分辨率的方向与飞行方向的关系为()。A.垂直于飞行方向 B
(2019年真题)小林婚后辞职在家,专心做起全职妈妈,在孩子过完5周岁生日后,小
与外部EAP相比,内部EAP更加()A.效果明显 B.节省成本 C.具有专
最新回复
(
0
)