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What is wrong with this Ethernet frame header? "Destination MAC: 00:1G:2B:3C:4D:5E"

medium📝 Analysis Q7 of 15
Computer Networks - Physical and Data Link Layer
What is wrong with this Ethernet frame header? "Destination MAC: 00:1G:2B:3C:4D:5E"
AMissing colons between pairs
BInvalid hexadecimal digit 'G' in MAC address
CMAC address is too long
DMAC address is broadcast address
Step-by-Step Solution
Solution:

  1. Step 1: Validate MAC address characters

    MAC addresses use hexadecimal digits 0-9 and A-F only.

  2. Step 2: Identify invalid character

    The character 'G' is not a valid hexadecimal digit, making the MAC address invalid.

  3. Final Answer:

    Invalid hexadecimal digit 'G' in MAC address -> Option B

  4. Quick Check:

    MAC digits must be 0-9 or A-F [OK]
Quick Trick: MAC addresses only use hex digits 0-9 and A-F [OK]
Common Mistakes:
MISTAKES
  • Ignoring invalid characters
  • Thinking MAC is too long
  • Confusing broadcast address format

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