What is the main difference between IPv4 and IPv6 addressing?
2025
What is the main difference between IPv4 and IPv6 addressing?
- A.
IPv6 is slower than IPv4 due to large address size
- B.
IPv6 supports encryption, IPv4 does not
- C.
IPv6 uses 128-bit addresses, while IPv4 uses 32-bit addresses
- D.
IPv4 supports only public addresses, IPv6 supports only private addresses
Attempted by 123 students.
Show answer & explanation
Correct answer: C
IPv6 uses 128-bit addresses while IPv4 uses 32-bit addresses, providing a vastly larger address space. This structural difference allows IPv6 to support more devices and eliminates the need for NAT in most scenarios.