Configuring a Cisco router to access control on an interface of the router

What command should you use?

A. permit access-list 101 out
B. ip access-group 101 out
C. apply access-list 101 out
D. access-class 101 out
E. ip access-list e0 out
Answer: B

Explanation:

To enable an ACL on an interface and define the direction of packets to which the ACL is applied, the ip access-group command is used. In this example, the access list is applied to packets going out of the interface. Packets coming in on the interface are not checked against access list 101.