Device letters are followed by a(n) ____ and a backslash.

Memory (Private Working Set) refers to the amount of memory that ________

A) is currently being used by a process B) is used by a computer C) must be reserved by each process D) is unused by a computer

Perfective maintenance _____.?

A. ?adds enhancements to an operational system and makes the system easier to use B. ?diagnoses and corrects errors in an operational system C. ?involves changing an operational system to make it more efficient, reliable, or maintainable D. ?competes for resources in an operational system