312-50V13 Question #197: Real Exam Question with Answer & Explanation

Question

What is the minimum number of network connections in a multi homed firewall?

Options

• A3
• B5
• C4
• D2

Explanation

This question asks for the minimum number of network connections typically found in a multi-homed firewall, particularly in a secure deployment.

Common mistakes.

• B. While a firewall can have five network connections for more complex segmentation, this number is not the minimum required to define a multi-homed firewall incorporating standard security zone separation.
• C. Four network connections are possible for specific, more granular network segmentation scenarios but exceed the minimum of three interfaces typically considered for a secure multi-homed firewall architecture including a DMZ.
• D. Although a firewall with two network connections (e.g., internal and external) is technically multi-homed, a more robust and secure 'multi-homed firewall' design typically implies at least three interfaces to adequately separate internal, external, and DMZ traffic.

Concept tested. Firewall architectures (multi-homed, DMZ)

Reference. https://learn.microsoft.com/en-us/azure/architecture/example-scenario/multi-tier-app/multi-tier-app-firewall-vnet

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