单项选择题
A.Speed mismatch
B.Incorrect encapsulation
C.MTU set too low
D.Duplex mismatch
多项选择题 ForthefollowingLMItypes，whichthreecanbeconfiguredforusewithFrameRelayonaCiscorouter？（）
问答题 whatisthepurposeofCIDR？
单项选择题 Youworkasanetworkengineerforthecompany，youwanttoconfiguretwoBGPspeakerstoformanEBGPsessionacrossafirewall.Ontheengineer’snetwork，thefirewallalwayspermitsTCPsessionsthatareinitiatedfromtheinsidenetwork（thenetworkattachedtotheinsideinterfaceofthefirewall）.WhatprerequisiteisthereforenablingBGPtorunonthisnetwork？（）