Difficulty: Easy
Correct Answer: execute more jobs in the same time period
Explanation:
Introduction / Context:
Multiprogramming allows multiple jobs to reside in memory at once, so the CPU can switch to another job when one blocks for I O. This improves overall throughput and resource utilization compared to running a single job at a time.
Given Data / Assumptions:
Concept / Approach:
By overlapping CPU time of one job with I O wait of another, multiprogramming decreases total idle time. This means more jobs complete within a fixed interval. Individual jobs may not finish faster, but the system completes more work overall, increasing throughput.
Step-by-Step Solution:
Verification / Alternative check:
Queueing theory and empirical OS measurements show throughput improvements under multiprogramming, especially with mixed workloads.
Why Other Options Are Wrong:
Common Pitfalls:
Confusing response time improvements for short jobs with universal speedups; throughput gains do not guarantee faster completion for every job.
Final Answer:
execute more jobs in the same time period
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