首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
计算机
What are two characteristics of "store and forward" switching? (Select two answer choices)
What are two characteristics of "store and forward" switching? (Select two answer choices)
admin
2009-05-19
29
问题
What are two characteristics of "store and forward" switching? (Select two answer choices)
选项
A、Latency fluctuates regardless of frame size.
B、The switch receives the complete frame before beginning to forward it.
C、Latency through the switch varies with frame length.
D、The switch checks the destination address upon receipt of headers.
答案
B,C
解析
Explanation:
With store-and-forward, the entire frame is received by the switch before the first bit of the frame is forwarded. As soon as the incoming switch port receives enough of the frame to see the destination MAC address, the forwarding decision is made and the frame is transmitted out the appropriate outgoing port to the destination device. So, each frame might experience slightly less latency. Store and forward switching may add latency when compared to other switching methods such as cut through, but it can reduce the amount of errors that become forwarded through a network.
Incorrect Answers:
A. The amount of latency that is introduced with this method of switching is dependent on the size of the frame, as the switch must wait to receive the entire frame before sending it.
D. The switch must wait for the entire frame before forwarding it on, and not just the headers.
转载请注明原文地址:https://jikaoti.com/ti/CoO7FFFM
本试题收录于:
思科640802题库思科认证分类
0
思科640802
思科认证
相关试题推荐
Writeanessayof160-200wordsbasedonthefollowingdrawing.Inyouressay,youshould1)describethedrawingbriefly,
Writeanessayof160-200wordsbasedonthefollowingdrawing.Inyouressay,youshould1)describethedrawingbriefly,
Inthissection,youareaskedtowriteanessaybasedonthefollowinginformation.Makecommentsandexpressyourownopinion.
Studythefollowingpicturecarefullyandwriteanessaywithin160-200wordsclearlyonANSWERSHEET2.Youressayshouldcover
Afterbeinginvolvedinanaccident,youwerelookedafterbyanotherperson.Writealetterofthanks:1)mentioningwhath
BarackObamaspentmuchtimeonthecampaigntrailproposingadramaticvisiontochangenotonlytheUnitedStatesforthebett
In1929JohnD.Rockefellerdecideditwastimetosellshareswhenevenashoe-shineboyofferedhimasharetip.Duringthepa
ReadthefollowingtextcarefullyandthentranslatetheunderlinedsegmentsintoChinese.Yourtranslationshouldbewrittencl
Againstabackdropofdrasticchangesineconomyandpopulationstructure,youngerAmericansaredrawinganew21st-centuryroad
UsingFacebookmakespeoplesadder,atleastaccordingtosomeresearch.Burjustwhatisitaboutthesocialnetworkthattakes
随机试题
具有清肺止咳功效的利水渗湿药物是
A.18~20℃B.18~22℃C.22~24℃D.40~45℃E.50~52℃
抢救左心衰竭并发急性肺水肿的患者时,下列措施中,错误的是
设计施工总承包合同拟支付款项通常可分解为()等。
投标价是投标人参与工程项目投标时报出的工程造价,下面关于投标价计算的说法错误的是()。
下列有关知识产权权利人请求扣留货物向海关提供总担保的表述,正确的是:
财务费用包括()。
甲公司的股东乙公司准备购买一套生产设备,乙公司请求甲公司为自己提供担保。当甲公司股东会审议此请求时,下列情形可以通过的是()。
设A是m×s阶矩阵,B是s×n阶矩阵,且r(B)=r(AB).证明:方程组BX=0与ABX=0是同解方程组.
ThereadingofthefirstchapterofthenovelPrideandPrejudicehasledthereadertotheunderstandingofMrsBennetasawom
最新回复
(
0
)