单项选择题
A. The count parameter creates a counter that you can view with the show firewall command.
B. The count parameter allows the router to count the number of pings for logging purposes.
C. The count parameter allows the router to pause for 1000 seconds before sending out a ping.
D. The count parameter allows the router to send out 1000 pings and then stop.
单项选择题 What is a valid option when using the ping command?（）
单项选择题 Using the routing table shown in the exhibit, what will be the next-hop IP address used for a destination IP address of 192.168.1.1?（）
单项选择题 Given the routing entries shown in the exhibit, which next-hop IP address will be used for the destination IP address 192.168.1.159?（）