A method of transformation that involves changing the radix or base of the original key and either discarding excess high-order digits (that is, digits in excess of the number desired in the key) or extracting some part of the transformed number.
With a little digging I've done, finding this question with different answers the one you want is D. none of the above
Answer:
The correct answer is "circuit-level gateway"
Explanation:
A circuit-level gateway is a type of firewall that works at the session layer between the transport and application layer.
Answer: C conventional hard disk drives
Explanation: hope this helps! (:
