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
43
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.idleB.busyC.usefulD.unusable
选项
A.idle
B.busy
C.useful
D.unusable
答案
A
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/2430703.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
Aninternetisacombinationofnetworks
Inmultipointnetworks,therearetree
Inmultipointnetworks,therearetree
Inmultipointnetworks,therearetree
Inmultipointnetworks,therearetree
Inmultipointnetworks,therearetree
Inmultipointnetworks,therearetree
Inmultipointnetworks,therearetree
随机试题
TOADY:OBSEQUIOUS:A、brigand:arrogantB、malefactor:poisedC、miser:stingyD、stickl
Recentstudieshaveshownthatairintoahouseoftenhashigherconcentrations
[originaltext]Hello,everyone.Myname’sJohnSmithandI’llbeyourteacher
ThingstobeTaughtinEverySchoolI.Introduction:Importa
TheVictorianAgewaslargelyanageof______,eminentlyrepresentedbyDickens
Soabsorbedasishethatshedidnotdaretomakeasound.A、他那么聚精会神,她不敢说一句话。B、
[originaltext]Snowsportisabigbusiness.Skiareashelpsupportlocalec
下列活性污泥法污水处理系统基本组成的描述中,哪一项是正确的?()A.初沉池、
急性胆囊炎时体征项呈阳性的是A.Murphy征 B.Charcot三联症 C
2005年该省集体单位工资总额为(?)亿元。 A23.4 B24.4
最新回复
(
0
)