单项选择题
When a new trunk is configured on a 2950 switch, which VLANs by default are allowed over the trunk link?（）
A.no VLANs B.all VLANs C.only VLANs 1 - 64 D.only the VLANs that are specified when creating the trunk
单项选择题 Whatisthefunctionofthecommandswitchporttrunknativevlan999onaCiscoCatalystswitch?（）
单项选择题 ACiscorouterisbootingandhasjustcompletedthePOSTprocess.ItisnowreadytofindandloadanIOSimage.Whatfunctiondoestherouterperformnext?（）
多项选择题 Whatfunctionsdoroutersperforminanetwork?(Choosetwo.)（）
