CCNA: Cisco Certified Network Associate — Question 388

Why was the RFC 1918 address space defined?

Answer options

• A. conserve public IPv4 addressing
• B. support the NAT protocol
• C. preserve public IPv6 address space
• D. reduce instances of overlapping IP addresses

Correct answer: A

Explanation

The correct answer is A because RFC 1918 was created to conserve the limited number of public IPv4 addresses available. The other options do not reflect the primary intention of RFC 1918; while NAT (option B) can utilize these private addresses, it is not the reason for their creation, and options C and D address different concerns unrelated to the main purpose.