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What is wrong with this IPv6 address: 2001:db8::85a3::8a2e:370:7334?

medium📝 Analysis Q7 of 15
Computer Networks - IP Addressing
What is wrong with this IPv6 address: 2001:db8::85a3::8a2e:370:7334?
AContains invalid characters
BContains two double colons (::), which is invalid
CToo few groups in the address
DAddress uses dots instead of colons
Step-by-Step Solution
Solution:

  1. Step 1: Understand zero compression rules

    IPv6 addresses can use double colon (::) only once to represent consecutive zeros.

  2. Step 2: Identify multiple double colons

    This address has two double colons, which is not allowed.

  3. Final Answer:

    Contains two double colons (::), which is invalid -> Option B

  4. Quick Check:

    Only one :: allowed per IPv6 address [OK]
Quick Trick: Only one double colon (::) allowed in IPv6 address [OK]
Common Mistakes:
MISTAKES
  • Allowing multiple ::
  • Ignoring invalid characters
  • Confusing colons with dots

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