In the IPv6 header,the traffic class field is similar to which field in the IPv4 header? March 18, 2021 by admin Question: In the IPv6 header,the traffic class field is similar to which field in the IPv4 header? A. fragmentation field B. fast-switching C. tos field D. option field Answer» c. tos field Note: The above multiple-choice question is for all general and Competitive Exams in India.