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 4-bit ripple counter uses flip-flops with a propagation delay of 10 ns each. The worst-case time for its output to settle after a clock edge is:
सही उत्तर: घ) 40 ns
In a ripple counter each flip-flop is triggered by the previous one, so delays add: 4 x 10 ns = 40 ns.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A 16-to-1 multiplexer is assembled from 4-to-1 multiplexer chips arranged in two levels. How many chips are used?
सही उत्तर: क) 5
Four 4-to-1 MUXes select within groups of four inputs and one more 4-to-1 MUX selects among their outputs: 4 + 1 = 5.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A gate that behaves as an AND gate in positive logic behaves as which gate in negative logic?
सही उत्तर: ग) OR
Changing from positive to negative logic swaps the meaning of 0 and 1, which turns AND into OR (the dual) and vice versa.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The output of a 3-input XOR gate is 1 when:
सही उत्तर: ग) An odd number of inputs are 1
A multi-input XOR acts as an odd-parity detector: its output is 1 when an odd number of its inputs are 1.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A joystick is an input device used mainly for:
सही उत्तर: क) Controlling movement in games, simulators and some machines
A joystick is a lever that can be tilted in different directions to control movement, as in games, flight simulators and cranes.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The EAN-13 barcode printed on most retail products encodes how many digits?
सही उत्तर: ख) 13
As its name says, EAN-13 (International Article Number) holds 13 digits, the last being a check digit.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A transmitter adds an odd-parity bit in front of the 7-bit character 1101001. Which 8-bit pattern is sent?
सही उत्तर: घ) 11101001
1101001 has four 1s (even), so the odd-parity bit must be 1 to make the total number of 1s five: 1 1101001.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In ASCII, the line feed (LF) character, used as the newline in Unix/Linux text files, has the decimal code:
सही उत्तर: घ) 10
LF is 10; 13 is carriage return (CR), 9 is horizontal tab and 12 is form feed.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In 7-bit ASCII, the highest code, 127, is assigned to:
सही उत्तर: ख) The DEL (delete) control character
Code 127 is DEL, a control character; the printable characters run from 32 (space) to 126 (~).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The Unicode Basic Multilingual Plane (BMP), which contains the most commonly used characters, covers code points from U+0000 to:
सही उत्तर: ग) U+FFFF
The BMP is plane 0, the first 65,536 code points (U+0000 to U+FFFF); the whole Unicode range extends to U+10FFFF.
💬 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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