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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The CPU register that temporarily holds data just read from memory or about to be written to memory is the:
सही उत्तर: ख) Memory Data (Buffer) Register
The MDR (also called MBR) buffers data moving between the CPU and memory.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which CPU register holds the address of the memory location that is to be read or written?
सही उत्तर: क) Memory Address Register (MAR)
The MAR holds the address sent on the address bus for the current memory access.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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How many distinct Boolean functions are possible with 2 input variables?
सही उत्तर: ख) 16
There are 2^2 = 4 input rows, each with an output of 0 or 1, giving 2^4 = 16 functions.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Shifting an unsigned binary number one position to the left (filling 0 on the right) is equivalent to:
सही उत्तर: घ) multiplying it by 2
Each left shift moves every bit to the next higher power of 2, doubling the value (if no bits are lost).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A shift register that receives data one bit at a time and makes all bits available at once is called:
सही उत्तर: घ) Serial-in parallel-out (SIPO)
Data enters serially and is read out from all stages simultaneously, i.e. serial-in parallel-out.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In an asynchronous (ripple) counter:
सही उत्तर: ग) each flip-flop after the first is clocked by the output of the previous stage
In a ripple counter the clock ripples through the stages, each flip-flop being triggered by the previous one's output.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The minimum number of flip-flops needed for a mod-10 (decade) counter is:
सही उत्तर: ग) 4
3 flip-flops give only 8 states; 4 flip-flops give 16 states, enough for 10.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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How many flip-flops are required to build a mod-16 counter?
सही उत्तर: ग) 4
n flip-flops count up to 2^n states; 2^4 = 16.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The race-around condition in a level-triggered JK flip-flop is avoided by using:
सही उत्तर: ग) a master-slave configuration
In a master-slave JK flip-flop the output changes only once per clock pulse, preventing repeated toggling.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which flip-flop is obtained by connecting the J and K inputs of a JK flip-flop together?
सही उत्तर: घ) T flip-flop
With J and K tied together as one input T, the flip-flop holds when T = 0 and toggles when T = 1.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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