200-301 Question #367: Real Exam Question with Answer & Explanation

The correct answer is A: There is limited unique address space, and traffic on the new subnet will stay local within the. Private IPv4 addressing is appropriate for a new subnet when unique public address space is limited, and traffic on the subnet is primarily local to the organization's network.

Submitted by alyssa_d· Mar 5, 2026Network Fundamentals

Question

In which situation is private IPv4 addressing appropriate for a new subnet on the network of an organization?

Options

AThere is limited unique address space, and traffic on the new subnet will stay local within the
BThe network has multiple endpoint listeners, and it is desired to limit the number of broadcasts.
CTraffic on the subnet must traverse a site-to-site VPN to an outside organization.
DThe ISP requires the new subnet to be advertised to the internet for web services.

Explanation

Private IPv4 addressing is appropriate for a new subnet when unique public address space is limited, and traffic on the subnet is primarily local to the organization's network.

Common mistakes.

B. While limiting broadcasts is a good network design principle, private addressing itself does not directly limit broadcasts; proper subnetting and network segmentation achieve this.

Concept tested. Appropriate use cases for private IPv4 addressing

Reference. https://datatracker.ietf.org/doc/html/rfc1918

Topics

#Private IPv4 addressing#IP addressing principles#Subnetting basics

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