What is the size of the fixed header in IPv6?

Options

  • A. 20 bytes
  • B. 40 bytes
  • C. 60 bytes
  • D. More than one of the above
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

B. 40 bytes

Detailed Explanation

Correct Answer: 40 bytes

  • The IPv6 base header has a fixed size of 40 bytes (320 bits).
  • Unlike IPv4, IPv6 does not have a variable-length base header.
  • Optional information is handled through extension headers.