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Identify the error in this IPv6 address: 2001::db8::1

medium📝 Analysis Q14 of 15
Computer Networks - IP Addressing
Identify the error in this IPv6 address: 2001::db8::1
AMissing groups of zeros
BUsing hexadecimal digits instead of decimal
CToo many groups separated by colons
DUsing :: twice in the same address
Step-by-Step Solution
Solution:

  1. Step 1: Check usage of :: in IPv6

    The double colon (::) can only appear once in an IPv6 address to replace consecutive zeros.

  2. Step 2: Analyze the given address

    This address uses :: twice, which is invalid syntax.

  3. Final Answer:

    Using :: twice in the same address -> Option D

  4. Quick Check:

    Only one :: allowed per IPv6 address [OK]
Quick Trick: Only one :: allowed in an IPv6 address [OK]
Common Mistakes:
MISTAKES
  • Using multiple :: in one address
  • Confusing hex digits with decimal
  • Ignoring colon count rules

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