Which problem does private IPv4 addressing mitigate?
Choose an answer
Tap an option to check your answer.
Correct answer: Lack of available publicly routable unique IPv4 address.
Why this is the answer
Private IPv4 addressing, defined in RFC 1918, mitigates the exhaustion of public IPv4 addresses. By allowing organizations to reuse specific address ranges (10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16) internally, it conserves the limited global pool of unique public IPv4 addresses. These private addresses are not routable on the public internet, requiring Network Address Translation (NAT) to communicate externally. Incorrect options: Routing protocols like OSPF and EIGRP fully support CIDR and VLSM, which help optimize address usage but don't create new addresses. Private addressing doesn't directly address security protocols; firewalls and other security measures handle perimeter security. TCP/UDP ports are associated with applications on a host, not directly with the IPv4 address itself, and there are 65,535 available ports per IP address.
Pass your exam — without the endless answer hunt
Get every verified question and explanation for this exam in one place, and save hours of prep. 1,000+ certifications · 20+ languages · free to start.
Pass your exam faster → No card needed