Which statement describes IPv4?

Which statement describes IPv4?

• A. IPv4 is a 64-bit protocol with hexadecimal addresses.
• B. The Internet Protocol version 4 is the dominant protocol for routing traffic on the Internet, using dotted decimal addresses like 122.45.255.0.
• C. IPv4 addresses are always written in binary, not decimal.
• D. IPv4 is used only for internal networks.

Answer: (B)

Understanding IPv4 involves knowing that it uses 32-bit addresses and is typically represented in dotted decimal form, four decimal numbers separated by dots (for example, 122.45.255.0). This version of the Internet Protocol has long been the main protocol for routing traffic on the Internet, so it remains the dominant protocol in practical use. The statement captures both the widespread role of IPv4 and the common human-readable format of its addresses. Addresses are not written in binary for everyday use, and IPv4 is not a 64-bit protocol nor restricted to internal networks; those descriptions don’t match how IPv4 actually works.

Understanding IPv4 involves knowing that it uses 32-bit addresses and is typically represented in dotted decimal form, four decimal numbers separated by dots (for example, 122.45.255.0). This version of the Internet Protocol has long been the main protocol for routing traffic on the Internet, so it remains the dominant protocol in practical use. The statement captures both the widespread role of IPv4 and the common human-readable format of its addresses. Addresses are not written in binary for everyday use, and IPv4 is not a 64-bit protocol nor restricted to internal networks; those descriptions don’t match how IPv4 actually works.