6. What message is issued by a neighbor as a response to a valid Open?A. KeepaliveB. OpenC. ExchangeD. NotificationE. PingAnswer: A
7. Which of the following is not exchanged in a BGP Open message?A. BGP version numberB. The local AS numberC. The hold timeD. The keepalive timerE. The Router IDAnswer: D
8. The state of one BGP neighbor shows Established, which of the following is false?A. The router has established a complete session with that neighbor.B. BGP can exchange update, notification and keepalive messages with that neighborC. If the keepalive timer expires, the local system sends a keepalive message and restarts its keepalive timerD. If the local system receives a notification message, it changes its state to OpenConfirmE. Established is the operational stateAnswer: D
9. Which of the following is a Well Known Mandatory attribute?A. Origin CodeB. Local PreferenceC. MEDD. AS PathE. (a) and (d)F. (b) and (d)Answer: E
10. Which of the following is true, based on the AS Path list shown here?65206 65111 65100A. AS 65206 originated the routeB. AS 65111 is a transit ASC. AS 65100 is a transit ASD. AS 65100 originated the routeE. (b) and (d)F. (a) and (c)Answer: E
        更新时间：2008-9-10