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Which of the following is the correct format for an Ethernet MAC address?

easy📝 Factual Q3 of 15
Computer Networks - Physical and Data Link Layer
Which of the following is the correct format for an Ethernet MAC address?
A12:34:56:78:9A:BC
B1234.5678.9ABC
C12-34-56-78-9A-BC
D12/34/56/78/9A/BC
Step-by-Step Solution
Solution:

  1. Step 1: Recall MAC address standard format

    MAC addresses are usually shown as six pairs of hexadecimal digits separated by colons.

  2. Step 2: Match options with standard format

    12:34:56:78:9A:BC uses colons and six pairs, matching the standard format.

  3. Final Answer:

    12:34:56:78:9A:BC -> Option A

  4. Quick Check:

    Standard MAC format uses colons = 12:34:56:78:9A:BC [OK]
Quick Trick: MAC addresses use colons between hex pairs [OK]
Common Mistakes:
MISTAKES
  • Using dashes instead of colons
  • Using dots incorrectly
  • Using slashes which are invalid

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