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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On modern motherboards, the BIOS/UEFI firmware is usually stored in which type of memory that can be erased and rewritten electrically in blocks?
सही उत्तर: क) Flash memory
Flash memory is non-volatile and electrically block-erasable, allowing firmware updates ('flashing the BIOS').
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The total capacity of a memory organised as 64K x 8 is:
सही उत्तर: ख) 64 KB
64K locations x 8 bits = 64K bytes = 64 KB.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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How many data lines does a 4K x 16 memory require?
सही उत्तर: क) 16
The second number is the word size; each location holds 16 bits, so 16 data lines are required (12 address lines select 4K words).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A memory chip organised as 1K x 8 requires how many address lines?
सही उत्तर: घ) 10
1K = 1024 = 2^10 locations, so 10 address lines are needed; the 8 refers to data width.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which cache write policy updates main memory at the same time as every write to the cache?
सही उत्तर: ग) Write-through
Write-through writes data to cache and main memory together; write-back updates memory only when the block is replaced.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In a direct-mapped cache, each block of main memory:
सही उत्तर: ख) can be placed in exactly one particular cache line
Direct mapping assigns each memory block to a single cache line (usually block number mod number of lines).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The tendency of programs to access the same or nearby memory locations repeatedly within a short time is called:
सही उत्तर: ख) locality of reference
Cache memory works because of temporal and spatial locality of reference.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A cache has access time 10 ns and main memory 100 ns, with hit ratio 0.9. Using average access time = h x Tc + (1 - h) x Tm, the average access time is:
सही उत्तर: क) 19 ns
0.9 x 10 + 0.1 x 100 = 9 + 10 = 19 ns.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The cache hit ratio is defined as:
सही उत्तर: घ) hits / (hits + misses)
Hit ratio is the fraction of memory accesses found in the cache: hits divided by total accesses.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which type of hardware interrupt cannot be disabled by the CPU through software?
सही उत्तर: क) Non-maskable interrupt (NMI)
An NMI is used for critical events such as hardware failure and cannot be masked (ignored) by the CPU.
💬 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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