A.SSL
B.UDP
C.TCP
D.SSH
第1题:
第2题:
A.在Idle状态下,BGP拒绝任何进入的链接请求,是BGP初始状态
B.ACTIVE状态下,BGP将尝试进行TCP链接的建立,是BGP的中间状态
C.Established状态下,BGP对等体将可以交换Update报文,Route-refresh报文,Keepalive报文和Notification报文
D.BGP对等体双方的状态必须都为OpenConfirm,BGP邻居关系才能建立,双方通过Update报文交换路由信息
第3题:
---- Look! The man at the gate ________ be our headmaster. He is always standing there every morning.
--- - No, it ________ be him. He is holding a meeting in the office now.
A.must, can’t B.must, mustn’t C.can’t, can’t D.can’t, mustn’t
第4题:
A.OPEN报文
B.HELLO报文
C.REFLASH报文
D.UPDATE报文
E.NOTIFICATION报文
F.KEEPALIVE报文
第5题:
A.PrefVal
B.NEXT-HOP
C.AS-PATH
D.ORIGIN
第6题:
3.—__________ 1 go out for a while?
—No,you __________ You must finish your homework first.
A. Must,needn't
B. Can,may
C. May,mustn't
D. May,must