IT प्रवेश – B.Sc. CSIT, BIT, BCA
IT प्रवेश – B.Sc. CSIT, BIT, BCA
IT Entrance – B.Sc. CSIT, BIT & BCA · २,६०७ प्रश्न
२,६०७ प्रश्न उपलब्ध। मोड छान्नुहोस्:
IT प्रवेश: 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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A computer network where devices are connected wirelessly using radio waves is called:
सही उत्तर: ग) WLAN (Wireless Local Area Network)
WLAN stands for Wireless Local Area Network. It specifically describes networks utilizing radio waves for communication between devices like laptops and smartphones. LAN and WAN refer to network types based on geographical scope, while MAN is a larger network than LAN.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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What does ‘byte’ represent in terms of computer memory?
सही उत्तर: ख) Eight bits of data
A byte is composed of eight bits. It's the most common unit for measuring digital information in computing, representing a small amount of data. The other options are incorrect definitions related to memory.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following is a fundamental principle of data transmission?
सही उत्तर: ख) Digital Encoding
Digital encoding is fundamental to how computers transmit data. It involves converting information into discrete values (bits) that can be sent and accurately reconstructed. Analog transmission uses continuous signals, which are less reliable for digital communication.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The distance between the point (1, 2, 3) and the line L: x = t, y = 1 + t, z = 2 - t is:
सही उत्तर: ख) √8
First, find the direction vector of the line (0, 1, -1). Then, find the vector from a point on the line to the given point ((1, 2, 3) - (0, 1, 2)) = (1, 1, 1). The projection gives the distance. In this case, distance is sqrt(1^2+1^2+1^2) = √3
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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If a function f(x) = x² - 4x + 5, then find the value of f(-2).
सही उत्तर: क) -3
f(-2) = (-2)² - 4(-2) + 5 = 4 + 8 + 5 = 17. The other options are incorrect calculations for the function's value at x=-2.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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If y = x³ + 2x², then the value of y'' at x = 1 is:
सही उत्तर: घ) 8
First, find y' = 3x² + 4x. Then, find y'' = 6x + 4. At x = 1, y'' = 6(1) + 4 = 10. This option is incorrect.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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If z = cos(θ) + i sin(θ), then the magnitude of z is:
सही उत्तर: क) 1
The magnitude of a complex number in polar form is given by |z| = √(r²), where r is the modulus or radius. In this case, r = 1. Options 2, √2, and √3 represent incorrect magnitudes.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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If the probability of event A is P(A) = 0.6, and the probability of event B is P(B) = 0.5, given that P(A ∩ B) = 0.3, then find the value of P(A ∪ B).
सही उत्तर: क) 0.8
P(A ∪ B) = P(A) + P(B) - P(A ∩ B). Therefore, 0.6 + 0.5 - 0.3 = 0.8. The other options result from incorrect calculations of the union probability.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The speed of light in vacuum is approximately 3 x 10^8 m/s. What distance would light travel in 1 microsecond?
सही उत्तर: ग) 3,000 meters
First convert 1 microsecond to seconds: 1 µs = 1 x 10⁻⁶ s. Distance = Speed x Time = (3 x 10^8 m/s) * (1 x 10⁻⁶ s) = 3 x 10² m = 300 meters. Options 1, 3, and 4 are incorrect as they either provide incorrect distance calculations or use inappropriate values for the speed of light.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A uniform electric field of 3 x 10^5 N/C points in the positive x-direction. A charge of +2 C is placed at the origin. What is the force on the charge?
सही उत्तर: ग) 12 x 10^5 N
The force on a charge in an electric field is given by F = qE, where q is the charge and E is the electric field strength. In this case, F = (2 C) * (3 x 10^5 N/C) = 6 x 10^5 N. Options 1, 3, and 4 are incorrect as they do not correctly apply the force equation or use the given values.
💬 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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