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 digital magnitude comparator is used to determine:
सही उत्तर: ग) whether one binary number is greater than, equal to or less than another
A magnitude comparator compares two numbers A and B and outputs A > B, A = B or A < B.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A 4-bit binary ripple up-counter starts at 0000. What does it read after 20 clock pulses?
सही उत्तर: क) 0100
A 4-bit counter counts modulo 16, so 20 mod 16 = 4 = 0100.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A Johnson (twisted-ring) counter made with 4 flip-flops has how many distinct states?
सही उत्तर: ग) 8
A Johnson counter with n flip-flops cycles through 2n states, so 4 flip-flops give 8 states.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The main difference between a latch and a flip-flop is that:
सही उत्तर: क) a latch is level-sensitive while a flip-flop is edge-triggered
A latch responds whenever its enable is active (level), while a flip-flop changes only at a clock edge.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In a D flip-flop, at the active clock edge the output Q:
सही उत्तर: ख) takes the value present at the D input
The D (data/delay) flip-flop copies its D input to Q on the clock edge and holds it until the next edge.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following is a sequential circuit?
सही उत्तर: घ) Counter
A counter is built from flip-flops and stores state; the others are combinational circuits.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which logic gate is most commonly used to build parity generators and parity checkers?
सही उत्तर: ग) XOR
The XOR of a set of bits is 1 when the number of 1s is odd, which is exactly the parity function.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In a Karnaugh map, 'don't care' conditions (marked X) may be:
सही उत्तर: ग) treated as either 0 or 1, whichever gives a simpler grouping
Don't-care entries can be included in groups as 1 or left out as 0 to obtain the simplest expression.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following Boolean expressions is in Sum-of-Products (SOP) form?
सही उत्तर: क) AB + A'C
SOP is an OR (sum) of AND (product) terms, such as AB + A'C.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The 8-bit 2's complement number 11111011 represents the decimal value:
सही उत्तर: क) -5
The leading 1 shows it is negative; 2's complement of 11111011 is 00000101 = 5, so the value is -5.
💬 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।
नमस्ते! पाठ्यक्रम, सामान्य ज्ञान, भाषा परीक्षा वा कुनै प्रश्नको उत्तर बुझ्न सोध्नुहोस्।
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