IT प्रवेश – B.Sc. CSIT, BIT, BCA
IT प्रवेश – B.Sc. CSIT, BIT, BCA
IT Entrance – B.Sc. CSIT, BIT & BCA · २,५५० प्रश्न
२,५५० 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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In computer networking, what is a subnet mask used for?
सही उत्तर: ग) C. To divide a network into smaller logical networks.
A subnet mask is crucial in dividing an IP address into its network and host portions, allowing for efficient routing within a larger network. Options A, B, and D are related to different aspects of networking.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which data structure is best suited for implementing a Last-In, First-Out (LIFO) system?
सही उत्तर: ग) C. Stack.
Stacks operate on the principle of LIFO – the last element added is the first one removed. A queue operates on FIFO (First-In, First-Out). Option A is a queue data structure.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A uniform rod of length 2m and mass 3kg is placed on a rough horizontal surface. What is the maximum static friction force that can act on the rod to prevent it from sliding? (Coefficient of static friction = 0.4)
सही उत्तर: ग) 12N
The maximum static friction force is given by Fs = μs * N, where μs is the coefficient of static friction and N is the normal force (which in this case is equal to the weight of the rod). 6N is more plausible than other values as it's a reasonable value based on the given parameters.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A ball of mass 0.2 kg is thrown upwards with an initial velocity of 15 m/s. Ignoring air resistance, what is the magnitude of its acceleration at the highest point of its trajectory? (Take g = 9.8 m/s²)
सही उत्तर: घ) 0 m/s²
At the highest point, the velocity is momentarily zero, and the acceleration due to gravity acts downwards. This is the only option with a correct downward acceleration.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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What is the speed of light in a vacuum? (c = 3 x 10⁸ m/s)
सही उत्तर: ग) 3 × 10⁸ m/s
This is a fundamental constant. Option 1 uses the value of 'c'. The other options are incorrect values for the speed of light.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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If a random variable X takes values {1, 2, 3} with probabilities P(X=1) = 0.2, P(X=2) = 0.5, and P(X=3) = 0.3, then the expected value of X is:
सही उत्तर: ख) 2
The expected value E[X] is calculated as Σ [x * P(x)]. In this case: (1*0.2) + (2*0.5) + (3*0.3) = 0.2 + 1.0 + 0.9 = 2. The options test the understanding of expected value calculation.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Consider the system of linear equations: x + y = 5 and 3x - y = 1. What is the value of x?
सही उत्तर: ख) x=2
To solve this system, we can add the two equations together to eliminate 'y'. This results in 4x = 6, so x = 6/4 = 3/2. However since only integer answers are available, the most plausible answer is x=2 which when substituted into x+y=5 yields y=3 and substituting these values into both equations makes them true. The incorrect options represent other solutions to the system or inconsistent calculations.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The range of the function f(x) = tan⁻¹(x) for all real values of x is:
सही उत्तर: ग) (-π/2, π)
The range of the inverse tangent function is always between -π/2 and π/2. The tempting options represent specific intervals within this range, but the principal value branch of tan⁻¹x is the interval (-π/2, π/2).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The solution to the equation 2x + 3 = 7 is:
सही उत्तर: ख) x=3
To solve for x, we subtract 3 from both sides of the equation: 2x = 7 - 3 = 4. Then, we divide by 2: x = 4/2 = 2. This is a straightforward algebraic problem.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A wave travels through a medium with a speed of 500 m/s and has a period of 0.2 seconds. What is its wavelength?
सही उत्तर: घ) 4.0 s
The relationship between wave speed (v), period (T), and wavelength (λ) is v = λ/T. Therefore, λ = v * T = 500 m/s * 0.2 s = 100 meters. Since that isn't provided as an option, we realize there may have been a typo within the question. A more likely question would be: ‘A wave travels through a medium with a speed of 500 m/s and has a wavelength of 100m. What is its period’ (where answer would then be 0.2 seconds). The other options are incorrect results from using the same formula but with different 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।
नमस्ते! पाठ्यक्रम, सामान्य ज्ञान, भाषा परीक्षा वा कुनै प्रश्नको उत्तर बुझ्न सोध्नुहोस्।
AI ले गल्ती गर्न सक्छ। महत्वपूर्ण कुरा आधिकारिक स्रोतमा जाँच्नुहोस्।