单项选择题
You have a network containing 120 routers. You must establish and maintain connectivity between the loopback interfaces of all routers. Because of the critical services using the network, you need redundancy and fast failover. Which routing protocol should you use in this scenario?（）
A. OSPF B. RIP C. BGP D. static
多项选择题 What are two Junos processes?（）
单项选择题 Your network administrator has asked you to view the real-time interface usage on ge-0/0/0.Which command whould be used?（）
单项选择题 What does the command show | compare rollback 1 display?（）
