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
२,५७७ 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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For a very long sequence of instructions, the ideal speedup of a 5-stage pipeline over a non-pipelined processor approaches:
सही उत्तर: ख) 5
With no stalls, a k-stage pipeline completes nearly one instruction per cycle, giving a speedup close to k.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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By Amdahl's law, if 50% of a program can be parallelised, the maximum possible speedup using an unlimited number of processors is:
सही उत्तर: क) 2
Speedup = 1 / ((1 - P) + P/N); with P = 0.5 and N very large, speedup approaches 1/0.5 = 2.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A program executes 2 x 10^9 instructions with an average CPI of 2 on a 4 GHz processor. Its CPU time is:
सही उत्तर: क) 1 s
CPU time = instructions x CPI / clock rate = (2 x 10^9 x 2) / (4 x 10^9) = 1 s.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A CPU runs at a clock frequency of 2 GHz. Its clock period is:
सही उत्तर: ख) 0.5 ns
Clock period = 1/f = 1/(2 x 10^9) s = 0.5 x 10^-9 s = 0.5 ns.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A control unit that generates control signals from microinstructions stored in a control memory is called a:
सही उत्तर: क) microprogrammed control unit
In microprogrammed control, sequences of microinstructions in control memory produce the control signals, unlike fixed logic in hardwired control.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The part of a machine instruction that specifies the operation to be performed is the:
सही उत्तर: ख) opcode
The operation code (opcode) tells the CPU what to do; operands tell it what to do it on.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The Stack Pointer (SP) register holds:
सही उत्तर: घ) the address of the top of the stack
The SP points to the current top of the stack in memory and changes on every push and pop.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In the Harvard architecture:
सही उत्तर: घ) instructions and data are stored in separate memories with separate buses
Harvard architecture uses separate instruction and data memories, allowing both to be accessed simultaneously.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The CMOS logic family is preferred in most modern chips mainly because of its:
सही उत्तर: ग) very low static power consumption
CMOS draws almost no current when not switching, so it consumes very little static power.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In digital electronics, the fan-out of a logic gate is:
सही उत्तर: ग) the number of gate inputs that its output can drive reliably
Fan-out is the maximum number of standard loads an output can drive without degrading logic levels.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
यी अभ्यास प्रश्न हुन्, आधिकारिक प्रश्न होइनन्। पाठ्यक्रम, विज्ञापन र नतिजाका लागि सम्बन्धित निकायको आधिकारिक वेबसाइट हेर्नुहोस्। उत्तरमा गल्ती भेटे प्रश्नमुनिको "टिप्पणी / गल्ती रिपोर्ट" मा लेख्नुहोस्।
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