单项选择题
A.A number for identifying changes to the network switch.
B.A number for identifying changes to the network router.
C.A number for identifying changes to the network topology.
D.None of the other alternatives apply.
多项选择题 SwitchR1andR2bothbelongtotheCompanyVTPdomain.What’strueabouttheswitchoperationinVTPdomains？（）
多项选择题 TheCompanyswitchesareconfiguredtouseVTP.What’strueabouttheVLANtrunkingprotocol（VTP）？（）
多项选择题 VTPisconfiguredonswitchR1.WhichofthefollowingfeatureswereaddedinVTPversion2thatwerenotpreviouslysupportedinVTPversion1？（）