कम्प्युटर ज्ञान – Computer Knowledge MCQ
कम्प्युटर ज्ञान – IT प्रवेश
Computer Knowledge · IT Entrance – B.Sc. CSIT, BIT & BCA · ३९१ प्रश्न
३९१ प्रश्न उपलब्ध। मोड छान्नुहोस्:
कम्प्युटर ज्ञान: 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 binary sum 1011 + 0110 is:
सही उत्तर: ग) 10001
1011 is 11 and 0110 is 6, and 11 + 6 = 17, which is 10001 in binary. Adding column by column with carries gives the same result.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The decimal value of hexadecimal 2F is:
सही उत्तर: ख) 47
2F = 2 x 16 + 15 = 32 + 15 = 47. F stands for 15 in hexadecimal.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The octal equivalent of decimal 100 is:
सही उत्तर: क) 144
100 / 8 = 12 remainder 4; 12 / 8 = 1 remainder 4; 1 / 8 = 0 remainder 1. Reading remainders from bottom gives 144 (base 8).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The decimal equivalent of binary 101101 is:
सही उत्तर: क) 45
101101 = 32 + 8 + 4 + 1 = 45 (place values 32, 16, 8, 4, 2, 1 for the six bits).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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OMR is commonly used for:
सही उत्तर: ग) Evaluating multiple-choice answer sheets
Optical Mark Recognition detects marks (filled bubbles) at fixed positions, which is ideal for MCQ answer sheets. Cheques are read using MICR.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which type of RAM needs to be refreshed periodically?
सही उत्तर: घ) DRAM
DRAM stores bits as charge on capacitors that leak, so it must be refreshed thousands of times per second. SRAM uses flip-flops and does not need refreshing, which is why it is faster and used for cache.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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EEPROM can be erased using:
सही उत्तर: ख) Electrical signals
EEPROM means Electrically Erasable Programmable ROM, so it is erased electrically. EPROM, by contrast, is erased with ultraviolet light.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The BIOS of a personal computer is usually stored in:
सही उत्तर: घ) ROM / flash memory
BIOS firmware is kept in non-volatile ROM (today usually flash memory) so it is available as soon as the computer is switched on. RAM loses its contents when power is off, so it cannot hold the BIOS.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Cache memory is placed between:
सही उत्तर: ग) The CPU and main memory
Cache is a small, fast memory that holds frequently used data so the CPU does not wait for slower main memory. It reduces the average memory access time.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following memories is the fastest?
सही उत्तर: घ) CPU registers
Registers are inside the CPU and are the fastest storage in the memory hierarchy. Cache is the next fastest, sitting between registers and main memory.
💬 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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