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
55
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:http://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
Evenachildknowsthatnoddingheadmeans"Yes".ButsomepeopleWouldprob
A—menuB—passwordC—accountD—fullscreenE—updateF—operationsystemG—saveas
(1)BeingtoldIwouldbeexpectedtotalkhere,Iinquiredwhatsortoftalk
Asyouworkedlatelastnight,you______havecomethismorning.A、needn’tB、shoul
木地板刨平机和磨光机的刀具、磨具应锋利,修正量()。A.5mm B.1~2m
为慢性细菌性痢疾患者行保留灌肠时患者的体位是()。A.左侧卧位 B.右侧卧位
陶行知任育才中学的校长时,有一天他看到一位男生欲用砖头砸同学,就将其制止,并责令
下列城市用地的自然条件评价说法错误的是?()A.水文地质条件需要对水体的流量、
A.泄热平喘剂 B.清肺止咳剂 C.化痰平喘剂 D.补肺平喘剂 E.润肺
(2012年真题)项目组织计划制定与执行中重点关注的项目界面主要有()。A
最新回复
(
0
)