Question

Each MAC address is a __________.

• A. 8-digit hexadecimal number
• B. 36-digit hexadecimal number
• C. 24-digit hexadecimal number
• D. 12-digit hexadecimal number

Hint:

Keep these address lengths in mind for exams:
- MAC Address: 48 bits (12 hexadecimal digits)
- IPv4 Address: 32 bits (4 decimal octets)
- IPv6 Address: 128 bits (32 hexadecimal digits)

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
A MAC (Media Access Control) address is a unique identifier assigned to a network interface controller (NIC) for communications at the data link layer.

Step 2: Detailed Explanation:
A standard MAC address is 48 bits long. Since each hexadecimal digit represents 4 bits, the address is represented by \( 48 / 4 = 12 \) hexadecimal digits (typically separated by colons or hyphens, e.g., 00:1A:2B:3C:4D:5E).

Step 3: Final Answer:
Each MAC address is a 12-digit hexadecimal number.