多项选择题 What are two requirements to perform a warm Cisco IOS upgrade on a Cisco ISR router? （）(Choose two.)

单项选择题 With respect to a computer file system, an access control list (ACL) is a list of permissions attached to an object. Which of the following makes forwarding decisions in hardware?（）

单项选择题 As an experienced technician, you are responsible forT echnical Support in your company. One of the trainee implement RIP routing contests in MPLS VPN. How to respond?（）