Question

What is the total number of bits that comprise a single standard IPv4 (Internet Protocol version 4) address?

• A. 16 bits
• B. 32 bits
• C. 64 bits
• D. 128 bits

Hint:

IPv4 = 32 bits IPv6 = 128 bits Remember: IPv6 was introduced because IPv4 addresses became insufficient.

Answer 1

The Correct Option is B

Concept: Every device connected to a network requires a unique Internet Protocol (IP) address.

IPv4 Structure:

• IPv4 addresses contain 32 bits.

• These 32 bits are divided into four groups of 8 bits called octets.

• Example: \[ 192.168.1.1 \]

• Each octet can have values from 0 to 255.

• IPv4 supports approximately $2^{32}$ unique addresses.

Comparison with IPv6:

• IPv4 = 32 bits

• IPv6 = 128 bits