Information Systems and Computer Applications CLEP Prep Practice Exam

Question: 1 / 400

What is a firewall?

A program used to access the Internet

A type of computer memory

A set of rules governing access to a computer or network

A firewall is a security measure that controls incoming and outgoing network traffic based on a set of predefined rules. It acts as a barrier between a trusted internal network and an untrusted external network, such as the Internet. Option A, a program used to access the Internet, is incorrect because a firewall itself is not used to access the Internet, but rather helps control access to it. Option B, a type of computer memory, is incorrect because while a firewall may be stored in a computer's memory, it is not a type of memory itself. Option D, an Internet service provider, is incorrect because an ISP is a company that provides internet services, while a firewall is a security feature.

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An Internet service provider

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