Q.

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
Explanation: the traffic class field is used to specify the priority of the ip packet which is a similar functionality to the type of service field in the ipv4 header. it’s an 8-bit field and its values are not defined in the rfc 2460.
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