Which of the following is not a system privilege?

A ____ is a device and software used to connect two or more local area networks or systems that use different protocols; it translates one network's protocol into another, resolving hardware and software incompatibilities.

A. router B. gateway C. bridge D. tree

____ is the replacement of slow arithmetic operations with faster ones.

A. Strength reduction B. Constant evaluation C. Eliminating unnecessary operations D. Parse tree construction