单项选择题 The administrator wants to verify the current state of the OSPF database loading process. Which show command should the administrator use?（）

多项选择题 Refer to the exhibit. A network administrator wants to reduce the number of OSPF routes advertised from Area 1 into Area 2. As the router configuration specialist, what two things would you do to accomplish this goal?（）

多项选择题 Refer to the exhibit. A company would prefer all Internet - bound OSPF routed traffic to use ISP ABC with ISP DEF as a backup. As the network consultant, what three configuration changes might you make?（）