46. Page stealing

A. is a sign of an efficient system
B. is taking page frames from other working sets
C. should be the tuning goal
D. is taking larger disk spaces for pages paged out
E. None of the above

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47. In MS-DOS 5.0, which is the number that acts as a code to uniquely identify the software product?

A. MS
B. DOS
C. MS DOS
D. 5.0
E. None of the above

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48. Bug means

A. A logical error in a program
B. A difficult syntax error in a program
C. Documenting programs using an efficient documentation tool
D. All of the above
E. None of the above

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49. Memory management is :

A. not used in modern operating system
B. replaced with virtual memory on current systems
C. not used on multiprogramming systems
D. critical for even the simplest operating systems
E. None of the above

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