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The given IPv6 address, 2001:468:c04:1::6, is abbreviated using zero compression and dropping leading zeroes. How many...

The given IPv6 address, 2001:468:c04:1::6, is abbreviated using zero compression and dropping leading zeroes. How many bits are represented by the ::? Enter your response as a decimal integer with no label

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Answer #1
  • There are total 8 fields in IPv6 and and each field consists of 16 bits.
  • IPv6 are compressed with certain rules
  • Single Zero or continuos zeros are replaced by : inorder to compress IPv6
  • Given IPv6 2001:468:c04:1::6 is compressed version of 2001:468:c04:1:0:0:0:6
  • 2001:468:c04:1:0:0:0:6 is 128 bit IP
  • By comparing both compressed and expanded version we could see three continuos zeros are replaced by::
  • Hence, :: represents three continuos zeros of expanded IP notation
  • Three continuos zeros signifies three fields of IPv6
  • 3 fields = 16*3=48 bits.
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