200-301 Question #1416: Real Exam Question with Answer & Explanation

Question

What is a function of a firewall on an enterprise network?

Options

• AIt allows and denies ingress and egress traffic.
• BIt serves as a default gateway to hosts on the internet.
• CIt processes traffic based on stateless inspection.
• DIt acts as the intermediary device between the enterprise and its ISP.

Explanation

The primary function of a firewall on an enterprise network is to enforce security policies by selectively allowing or denying network traffic both entering (ingress) and leaving (egress) the network.

Common mistakes.

• B. While a firewall may be configured as a default gateway for internal hosts, its primary function is traffic filtering and security enforcement, not solely acting as a routing point.
• C. Modern enterprise firewalls predominantly use stateful inspection, which tracks the state of active connections, rather than stateless inspection, which examines each packet independently without context.
• D. This describes the common placement of a firewall at the network perimeter, but not its core function, which is to filter traffic at that strategic location.

Concept tested. Firewall functions

Reference. https://learn.microsoft.com/en-us/windows/security/threat-protection/windows-firewall/windows-firewall-with-advanced-security-overview

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