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
१,५०२ 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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What is the minimum number of disks required for a RAID 5 array?
सही उत्तर: क) 3
RAID 5 stripes data with distributed parity, which needs at least three disks.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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CD-RW discs can be erased and rewritten because their recording layer is made of:
सही उत्तर: घ) a phase-change alloy
A laser switches the phase-change alloy between crystalline and amorphous states, which reflect light differently.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A single-sided, dual-layer DVD can store about:
सही उत्तर: ग) 8.5 GB
A single-layer DVD holds 4.7 GB; adding a second layer on the same side raises this to about 8.5 GB.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The storage capacity of a standard 3.5-inch high-density floppy disk is:
सही उत्तर: ख) 1.44 MB
The common 3.5-inch HD floppy stores 1.44 MB.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A cache miss that occurs the very first time a memory block is ever accessed is called a:
सही उत्तर: ख) compulsory (cold) miss
A compulsory miss cannot be avoided by a bigger cache because the block has never been loaded before.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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How many 1K x 4 memory chips are needed to build a 4K x 8 memory?
सही उत्तर: क) 8
Total bits needed / bits per chip = (4K x 8) / (1K x 4) = 8 chips (4 rows of 2 chips).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A memory chip has 12 address lines and 16 data lines. Its capacity is:
सही उत्तर: घ) 8 KB
2^12 = 4096 locations x 16 bits = 65536 bits = 8192 bytes = 8 KB.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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ECC (Error-Correcting Code) memory, often used in servers, can:
सही उत्तर: क) detect and correct single-bit memory errors
ECC memory stores extra check bits, typically allowing single-bit errors to be corrected and double-bit errors detected.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In a write-back cache, the 'dirty bit' of a cache line indicates that:
सही उत्तर: ग) the line has been modified and must be written to main memory before it is replaced
Write-back updates only the cache; the dirty bit marks lines whose changes must be copied back to memory on eviction.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In a set-associative cache, a block of main memory can be placed in:
सही उत्तर: ग) any line within one particular set
Set-associative mapping maps a block to one set, but it may occupy any of the lines (ways) of that set.
💬 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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