कम्प्युटर / सूचना प्रविधि कम्प्युटर अपरेटर (पाँचौँ तह) र सहायक – प्राविधिक पत्र
कम्प्युटर / सूचना प्रविधि – कम्प्युटर अपरेटर (पाँचौँ तह) र सहायक
Computer Operator & Assistant · Computer & IT Posts
५०२ प्रश्न उपलब्ध। मोड छान्नुहोस्:
प्राविधिक पत्र: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ५ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
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In CPU scheduling, throughput means:
सही उत्तर: क) Number of processes completed per unit time
Throughput measures how many processes finish per unit of time.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Turnaround time of a process is:
सही उत्तर: घ) Completion time minus arrival time
Turnaround time is the total time from submission (arrival) to completion.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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P1, P2, P3 with burst times 24, 3 and 3 ms arrive at time 0. Using Round Robin with time quantum 4 ms, the average waiting time is about:
सही उत्तर: ग) 5.67 ms
Waiting times are 6, 4 and 7 ms, so average = 17/3 ≈ 5.67 ms.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Four processes arrive at time 0 with burst times 6, 8, 7 and 3 ms. Using non-preemptive SJF, the average waiting time is:
सही उत्तर: क) 7 ms
Order 3,6,7,8 gives waits 0,3,9,16, so average = 28/4 = 7 ms.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The convoy effect, where short processes wait behind a long process, is associated with:
सही उत्तर: ग) FCFS scheduling
In FCFS a long CPU-bound process holds the CPU and short processes queue behind it.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The preemptive version of Shortest Job First scheduling is known as:
सही उत्तर: क) Shortest Remaining Time First (SRTF)
Preemptive SJF is called Shortest Remaining Time First.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which CPU scheduling algorithm gives the minimum average waiting time for a given set of processes?
सही उत्तर: क) Shortest Job First (SJF)
SJF is provably optimal for minimum average waiting time.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The technique of gradually increasing the priority of processes that wait in the system for a long time is called:
सही उत्तर: ख) Aging
Aging raises the priority of long-waiting processes to prevent starvation.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Starvation of low-priority processes is a major problem in:
सही उत्तर: घ) Priority scheduling
In priority scheduling low-priority processes may wait indefinitely if higher-priority ones keep arriving.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The module that actually gives control of the CPU to the process selected by the short-term scheduler is the:
सही उत्तर: ग) Dispatcher
The dispatcher performs the context switch and switches to user mode to start the chosen process.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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