After connecting a PC to an available port on
问题详情
After connecting a PC to an available port on a switch, you find that the PC can not access any of the resources on the LAN. No other PC"s connected to the switch appear to be having any issues. What is the most likely cause for this problem？
A．The router lacks a routing table entry for the new host
B．The host switch port is assigned to the incorrect VLAN
C．The host MAC address is incorrectly configured
D．A STP instance for the new host has not been initialized
E．The switch does not have the MAC address hard coded in the CAM table.请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：B
解析：Explanation:VirtualLANsbreakupbroadcastdomainsinalayer-twoswitchedinternetwork.IfahostisinadifferentVLANthenthenetworkservicesitneedstouse,thepacketsmustgothrougharouter.Ifroutingdoesnottakeplace,thePCwillbeunabletocommunicatewithanyotherdevicesnotinthesameVLAN.AnswerBisthebestanswerforthisquestion.IncorrectAnswers:A.ThePCisunabletocommunicatewithotherLANusers.Norouterneedstoevenbeinstalledforthistowork.C,E.TheMACaddressofthePCdoesnotneedtobeenteredmanuallyintotheswitch.TheswitchwilldynamicallylearnoftheMACaddressofthePC.D.TheSTPalgorithmdoesnotneedtohaveanyendhostinformationaddedinorderforittowork.
