कम्प्युटर आधारभूत ज्ञान र हार्डवेयर – Computer Fundamentals & Hardware MCQ
कम्प्युटर आधारभूत ज्ञान र हार्डवेयर – कम्प्युटर र IT
Computer Fundamentals & Hardware · Computer & IT (Technical) · ५७४ प्रश्न
५७४ प्रश्न उपलब्ध। मोड छान्नुहोस्:
कम्प्युटर आधारभूत ज्ञान र हार्डवेयर: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / 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)
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The three possible output states of a tri-state buffer are:
सही उत्तर: ग) 0, 1 and high impedance
A tri-state buffer can drive 0 or 1 or be disconnected (high-Z), which allows many devices to share a bus.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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When more than one input of a priority encoder is active at the same time, its output gives:
सही उत्तर: ग) the code of the highest-priority active input
A priority encoder resolves multiple active inputs by encoding only the one with highest priority.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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How many 2-to-1 multiplexers are needed to build an 8-to-1 multiplexer?
सही उत्तर: घ) 7
A tree of 2:1 MUXes needs 4 + 2 + 1 = 7 units to reduce 8 inputs to 1.
💬 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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