首页
登录
从业资格
In multipoint networks , there are tree
In multipoint networks , there are tree
最全题库
2022-08-02
40
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.randomB.bigC.mediumD.small
选项
A.random
B.big
C.medium
D.small
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/2430705.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
[originaltext]Wherearetheinvoices?(A)They’reinthefiles.(B)Hervoiceis
Somemarriagesseemtocollapsesosuddenlythatyou’dneedacrystalballt
Aperson’shomeisasmuchareflectionofhispersonalityastheclotheshe
OneofthebestwaystocelebrateMother’sDayistogiveyourmomthedayo
何谓确定性知识,如何达到确定性知识在( )已开始专门讨论。A.苏格拉底 B.
拱顶混凝土层出现对称的、向下滑落的剪切破坏时,可能会引起塌方。
关于腹部外形临床意义的叙述,正确的是A、蛙腹―少量腹腔积液 B、舟状腹―严重脱
中医学认为与水肿发生密切相关的三脏是()A.心肝肾三脏 B.心肝肺三脏
《招标投标法》规定.招标投标当事人在追求自己利益的同时尽量不损害他人利益和社会利
项目组织结构图反映的是各工作单位、各工作部门和各工作人员之间的()。A.组织关系
最新回复
(
0
)