多项选择题
Which two statements are true regarding the role of the Routing Engine (RE)?（）
A. The RE controls and monitors the chassis. B. The RE manages the Packet Forwarding Engine (PFE). C. The RE receives a copy of the forwarding table from the forwarding plane. D. The RE implements class of service (COS).
单项选择题 What is an advantage of multiple software processes running in the Junos OS?（）
单项选择题 On which operating system is the Junos OS based?（）
多项选择题 What are two Junos processes?（）
