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
२,५७७ 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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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)
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A signal from a device that causes the CPU to suspend its current work and attend to the device is called a/an:
सही उत्तर: ग) interrupt
An interrupt makes the CPU save its state and run an interrupt service routine for the device.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Instruction pipelining improves CPU performance mainly by:
सही उत्तर: ग) overlapping the stages of several instructions
In a pipeline, while one instruction executes, the next is decoded and another is fetched, increasing throughput.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The width of a computer's data bus mainly determines:
सही उत्तर: ख) how many bits can be transferred at one time
A 64-bit data bus can carry 64 bits in one transfer; addressable memory depends on the address bus.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which system bus carries memory addresses from the CPU and is unidirectional?
सही उत्तर: क) Address bus
Addresses flow only from the CPU (or DMA controller) to memory/I/O, so the address bus is unidirectional.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In direct addressing mode, the address field of an instruction contains:
सही उत्तर: घ) the memory address of the operand
Direct (absolute) addressing gives the effective address of the operand directly in the instruction.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In immediate addressing mode, the operand is:
सही उत्तर: ख) contained in the instruction itself
In immediate addressing the actual data value is part of the instruction, e.g. MOV A, #25.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which CPU register records conditions such as zero, carry, sign and overflow produced by ALU operations?
सही उत्तर: ख) Status (flag) register
The status or flag register has individual bits set or cleared according to the result of ALU operations.
💬 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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