Question

a firewall is __________. a network used by guests a gatekeeper between a server and the outside world a password used to sign in to a network an operating system for wi - fi users

Explanation:

A firewall acts as a gatekeeper. It monitors and controls incoming and outgoing network traffic based on predetermined security rules. It sits between a server (or a private network) and the outside world (public network) to protect the internal network from unauthorized access and potential threats. A network used by guests is usually a guest - Wi - Fi network, a password is for authentication, and an operating system for Wi - Fi users is a software that manages Wi - Fi hardware, which are all different from the function of a firewall.

Answer:

a gatekeeper between a server and the outside world