CCNA: Cisco Certified Network Associate — Question 494

What is an appropriate use for private IPv4 addressing?

Answer options

• A. to allow hosts inside to communicate in both directions with hosts outside the organization
• B. on internal hosts that stream data solely to external resources
• C. on the public-facing interface of a firewall
• D. on hosts that communicate only with other internal hosts

Correct answer: D

Explanation

The correct answer is D because private IPv4 addresses are intended for use within an organization's internal network, allowing communication among internal hosts without exposure to the public internet. Option A is incorrect as it suggests external communication, which is not applicable to private addressing. Option B is also wrong since it refers to data streaming only to external resources, while option C is incorrect because public-facing interfaces should use public IP addresses.