CCNA Routing and Switching (legacy) — Question 78

In which three ways is an IPv6 header simpler than an IPv4 header? (Choose three.)

Answer options

• A. Unlike IPv4 headers, IPv6 headers have a fixed length.
• B. IPv6 uses an extension header instead of the IPv4 Fragmentation field.
• C. IPv6 headers eliminate the IPv4 Checksum field.
• D. IPv6 headers use the Fragment Offset field in place of the IPv4 Fragmentation field.
• E. IPv6 headers use a smaller Option field size than IPv4 headers.
• F. IPv6 headers use a 4-bit TTL field, and IPv4 headers use an 8-bit TTL field. ABC

Correct answer:

Explanation

The correct answers are A, B, and C. IPv6 headers are simpler because they have a fixed length (A), they use an extension header for fragmentation instead of the fragmentation field (B), and they eliminate the checksum field present in IPv4 (C). Options D, E, and F are incorrect as they either misrepresent the fields or make invalid comparisons regarding size and field types.