CCNA: Cisco Certified Network Associate — Question 855

What is a characteristic of private IPv4 addressing?

Answer options

• A. traverses the internet when an outbound ACL is applied
• B. alleviates the shortage of IPv4 addresses
• C. is used when the ISP requires the new subnet to be advertised to the internet for web services
• D. enables secure connectivity over the internet

Correct answer: B

Explanation

The correct answer, B, is accurate because private IPv4 addressing provides a means to use non-routable IP addresses within local networks, thus conserving the limited pool of public IPv4 addresses. The other options are incorrect as they either describe characteristics not related to private addressing or misinterpret the nature of private IPs concerning internet routing and security.