单项选择题
A. providing loop-free technology.
B. providing HSRP/VRRP.
C. managing additional routing peers.
D. managing two nodes and configuration.
单项选择题 You are working with a client to deploy QoS on their Frame Relay WAN. They would like to be able to allow packets to cross the Frame Relay WAN but have them marked as discard eligible if they exceed the QoS policy. How would you accomplish this task?（）
单项选择题 What is a new feature of the Cisco ISR router? （）
多项选择题 Which two of the following actions must an OSPF NSF-capable router execute after a supervisor engine switchover?（） (Choose two.)