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Define the following security terms:

a) Digital signature. b) Hash function. c) Symmetric-key encryption. d) Digital certificate. e) Denial-of-service attack. f) Worm. g) Message digest. h) Collision. i) Triple DES. j) Session keys.

Which field in an IPv6 packet is used by source network hosts and forwarding routers to distinguished classes or priorities?

A. Hop Limit B. Payload Class C. Traffic Class D. Flow Label