多项选择题 哪两个值被生成树协议用来选举根桥？（）

单项选择题 Which of these represents an IPv6 link-local address?（）

多项选择题 Your boss is learning a CCNA training course，refer to the exhibit.The access list has been configured on the S0/0 interface of router RTB in the out bound direction.Which two packets，if routed to the interface，will be denied？（） access-list 101 denytcp192.168.15.320.0.0.15any eq telnet access-list 101 permit ip any any