Answer the following statements true (T) or false (F)

1. The operating system’s job is to manage the computer system’s resources as efficiently as
possible, but the precise definition of efficiency depends on the computing environment.
2. Throughput is typically defined as total execution time (for all programs) divided by total
elapsed time, and is often expressed as a percentage.
3. Turnaround is typically defined as the elapsed time between job submission and job
completion.
4. Response time is typically defined as the elapsed time between a request for the
computer’s attention and the computer’s response.
5. Security is the probability that a system will perform as expected for a specified period of
time.


1. True
2. True
3. True
4. True
5. False

Computer Science & Information Technology

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