A. help log messagesB. man log messagesC. man syslogD. ……

多项选择题Two devices on an Ethernet segment sent frames at the same time causing a collision. Which twostatements are true?（）

A. Both devices stop transmiting, wait a random period of time, verify the wire is idle, and re-transmit
B. The device with the lowest MAC address is permitted to retrannsmit first
C. The device with the lowest MAC address sends a jam signal to notify all other devices of the collision
D. Both devices send a jam signal to notify all other devices of the collision

单项选择题Which statement is true regarding the Junos OS?（）

A. All platforms running the Junos OS have identical factory-default configurations
B. All platforms running the Junos OS use the IP2 processor for longest-match lookup
C. All platforms running the Junos OS use the same source code base
D. All platforms running the Junos OS use FXP1 for communication between control and forwarding planes

多项选择题Which three statements are true about terms in a policy?（）

A. The order of the terms in a policy is irrelevant
B. The action is specified in a then statement
C. Ters are optional in a policy
D. The match condition can be identified with a from statement
E. Every policy must contain at least one term

多项选择题What are three terminating actions for firewall filters?（）

A. reject
B. drop
C. permit
D. accept
E. discard

多项选择题Which two commands would you use to view OSPF routes? （）

A. show ip route ospf
B. show ospf routes
C. show route protocol ospf
D. show route