Question

IPv4 addresses are how many bits long?

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

Hint:

IPv6 uses 128 bits, while IPv4 uses only 32 bits.

Answer 1

The Correct Option is B

Step 1: Recall IPv4 structure.
An IPv4 address consists of 4 octets.
Step 2: Calculate total bits.
Each octet has 8 bits, so \[ 4 \times 8 = 32 \text{ bits} \]
Step 3: Conclusion.
Thus, IPv4 addresses are 32 bits long.