Question

An access control list contains a list of users and allowed permissions. What is it called if the ACL automatically prevents access to anyone not on the list?

A) Whitelist
B) Blacklist
C) Firewall
D) VPN

Answer 1

An access control list that automatically prevents access to anyone not included is called a whitelist.

Step-by-step explanation:

An access control list (ACL) is a mechanism used in computer security to enforce permissions on users accessing a system. When an ACL automatically prevents access to anyone not on the list, it is functioning as a whitelist. A whitelist allows only those entities on the ACL to have access, automatically denying all others by default. This is in contrast to a blacklist, which specifically denies access to entities on its list but allows everyone else.