कम्प्युटर ज्ञान – Computer Knowledge MCQ
कम्प्युटर ज्ञान – IT प्रवेश
Computer Knowledge · IT Entrance – B.Sc. CSIT, BIT & BCA · ३८७ प्रश्न
३८७ 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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In MS Excel, what does the function ‘SUM’ primarily calculate?
सही उत्तर: ग) The sum of a range of cells
The SUM function is specifically designed to add up all the numerical values within a specified range of cells. The other options represent different Excel functions – AVERAGE, MAX, and COUNT respectively.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following is considered an example of digital data?
सही उत्तर: ग) A sound recording stored as an MP3 file
Digital data is represented by discrete values (typically binary: 0 and 1). An MP3 file stores audio digitally.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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What does ‘bandwidth’ measure in a communication system?
सही उत्तर: ख) The speed at which data can be transmitted over a connection
Bandwidth refers to the capacity of a channel or connection for transmitting data. It's measured in bits per second (bps).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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What does the term 'debugging' mean in software development? (a) Designing a new program. (b) Fixing errors or defects in a program’s code. (c) Optimizing a program for performance. (d) Testing a program to ensure it meets requirements.
सही उत्तर: ख) (b) Fixing errors or defects in a program’s code.
Debugging is the process of identifying and correcting errors (bugs) within a computer program's source code. Option (a) describes software design. Option (c) describes optimization. Option (d) refers to testing.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following best describes the concept of 'recursion' in programming? (a) Using loops to repeat code. (b) A function calling itself within its own definition. (c) Creating multiple instances of a program. (d) Passing data between different functions.
सही उत्तर: ख) (b) A function calling itself within its own definition.
Recursion is a programming technique where a function calls itself repeatedly to solve a problem. This is fundamentally different from loops. Option (a) describes iterative control flow. Option (c) involves multiple processes. Option (d) relates to function arguments.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In computer networking, what does 'IP addressing' refer to? (a) A method of encrypting data packets. (b) The process of assigning unique numerical addresses to devices on a network. (c) A type of wireless communication protocol. (d) The physical cables used to connect computers.
सही उत्तर: ख) (b) The process of assigning unique numerical addresses to devices on a network.
IP addressing (Internet Protocol addressing) is the system used to uniquely identify and locate each device connected to a network. Option (a) describes encryption. Option (c) refers to Wi-Fi. Option (d) deals with cabling.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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What is the output of the following C code snippet? `int x = 10; float y = 2.5; int result = x * (int)y; printf("%d", result);` (a) 25 (b) 10 (c) 24 (d) Compilation error
सही उत्तर: घ) (d) Compilation error
The code performs integer multiplication with implicit type conversion. The float `y` (2.5) is cast to an integer during the calculation (`(int)y`). This truncation results in `y` becoming 2 before the multiplication takes place, so `x * 2 = 20`. Therefore, the output is 20.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In Object-Oriented Programming (OOP), what is the primary purpose of 'inheritance'?
सही उत्तर: ख) To allow one class to inherit properties and methods from another class, promoting code reusability
Inheritance is a fundamental OOP concept where a derived (child) class inherits attributes and methods from its parent (base) class. This promotes code reuse, reduces redundancy, and establishes an 'is-a' relationship between classes. The other options describe different aspects of OOP like object instances, data types within a class, or memory management.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Consider a binary tree where each node has at most two children. How many nodes can be present in a full binary tree with a height of 3?
सही उत्तर: ग) 14
A full binary tree of height 3 means each level (from root to deepest leaf) has one more node than the previous. Level 0 (root): 1 node. Level 1: 2 nodes. Level 2: 4 nodes. Level 3: 8 nodes. Total = 1 + 2 + 4 + 8 = 15, but the question asks for nodes with a height of 3 so it's 1+2+4=7, however since the root is always counted as well we should add one to get 8. The most tempting incorrect option is 16 because this is the number of nodes in a complete binary tree.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following best describes the purpose of hashing in computer science?
सही उत्तर: ग) To create a unique identifier (key) for each input and facilitate fast retrieval based on that key
Hashing is primarily used to create a unique 'hash' value from an input. This hash acts as a fingerprint, enabling quick lookup of data in a database or hash table without needing to compare the entire dataset. The other options are related to different concepts: sorting uses algorithms like merge sort, encryption protects data confidentiality, and compression reduces file size.
💬 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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