Computer Science & IT

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Computer Science & IT MCQ & Objective Questions

Computer Science & IT is a crucial subject for students preparing for school and competitive exams in India. Mastering this field not only enhances your understanding of technology but also significantly boosts your exam scores. Practicing MCQs and objective questions is an effective way to reinforce your knowledge and identify important questions that frequently appear in exams.

What You Will Practise Here

  • Fundamentals of Computer Science
  • Data Structures and Algorithms
  • Operating Systems Concepts
  • Networking Basics and Protocols
  • Database Management Systems
  • Software Engineering Principles
  • Programming Languages Overview

Exam Relevance

Computer Science & IT is an integral part of the curriculum for CBSE, State Boards, and competitive exams like NEET and JEE. Questions often focus on theoretical concepts, practical applications, and problem-solving skills. Common patterns include multiple-choice questions that test your understanding of key concepts, definitions, and the ability to apply knowledge in various scenarios.

Common Mistakes Students Make

  • Confusing similar concepts in data structures, such as arrays and linked lists.
  • Overlooking the importance of algorithms and their time complexities.
  • Misunderstanding the functions and roles of different operating system components.
  • Neglecting to practice coding problems, leading to difficulty in programming questions.
  • Failing to grasp the fundamentals of networking, which can lead to errors in related MCQs.

FAQs

Question: What are the best ways to prepare for Computer Science & IT exams?
Answer: Regular practice of MCQs, understanding key concepts, and reviewing past exam papers are effective strategies.

Question: How can I improve my problem-solving skills in Computer Science?
Answer: Engage in coding exercises, participate in study groups, and tackle a variety of practice questions.

Start your journey towards mastering Computer Science & IT today! Solve our practice MCQs to test your understanding and enhance your exam preparation. Remember, consistent practice is the key to success!

Q. What does the term 'collision domain' refer to?
  • A. A network segment where data packets can collide
  • B. A type of network protocol
  • C. A security threat in networking
  • D. A method of data encryption
Q. What does the term 'confusion matrix' refer to in classification tasks?
  • A. A matrix that shows the relationship between features
  • B. A table used to evaluate the performance of a classification model
  • C. A method for dimensionality reduction
  • D. A technique for data normalization
Q. What does the term 'confusion matrix' refer to?
  • A. A matrix that shows the performance of a classification model
  • B. A method for visualizing neural network layers
  • C. A technique for data preprocessing
  • D. A type of unsupervised learning algorithm
Q. What does the term 'curse of dimensionality' refer to?
  • A. The increase in computational cost with more features
  • B. The difficulty in visualizing high-dimensional data
  • C. The risk of overfitting with too many features
  • D. All of the above
Q. What does the term 'ensemble learning' refer to in the context of Random Forests?
  • A. Using a single model for predictions
  • B. Combining multiple models to improve accuracy
  • C. Training models on different datasets
  • D. Using only linear models
Q. What does the term 'environment' refer to in reinforcement learning?
  • A. The dataset used for training
  • B. The external system the agent interacts with
  • C. The algorithm used for learning
  • D. The performance metrics
Q. What does the term 'feature engineering' refer to?
  • A. The process of selecting a model
  • B. The process of creating new input features from existing data
  • C. The process of tuning hyperparameters
  • D. The process of evaluating model performance
Q. What does the term 'feature importance' refer to in the context of Random Forests?
  • A. The number of features used in the model
  • B. The contribution of each feature to the model's predictions
  • C. The correlation between features
  • D. The total number of trees in the forest
Q. What does the term 'grammar ambiguity' refer to?
  • A. Multiple valid parse trees for a single input
  • B. The inability to parse a string
  • C. A grammar that cannot be expressed in BNF
  • D. A grammar with too many productions
Q. What does the term 'learning rate' control in a neural network?
  • A. The number of layers in the network
  • B. The speed of weight updates
  • C. The size of the training dataset
  • D. The complexity of the model
Q. What does the term 'margin' refer to in the context of SVM?
  • A. The distance between the closest data points of different classes
  • B. The total number of support vectors
  • C. The area under the ROC curve
  • D. The error rate of the model
Q. What does the term 'memory leak' refer to?
  • A. Not freeing allocated memory
  • B. Accessing uninitialized memory
  • C. Using too much stack space
  • D. Overwriting memory
Q. What does the term 'overfitting' refer to in machine learning?
  • A. A model that performs well on training data but poorly on unseen data
  • B. A model that generalizes well to new data
  • C. A model that has high bias
  • D. A model that is too simple
Q. What does the term 'overfitting' refer to in model evaluation?
  • A. Model performs well on training data but poorly on unseen data
  • B. Model performs poorly on both training and unseen data
  • C. Model performs well on unseen data but poorly on training data
  • D. Model has high bias
Q. What does the term 'overfitting' refer to in the context of model selection?
  • A. A model that performs well on training data but poorly on unseen data
  • B. A model that is too simple to capture the underlying data patterns
  • C. A model that uses too many features
  • D. A model that is trained on too little data
Q. What does the term 'register allocation' refer to in code generation?
  • A. Assigning variables to CPU registers
  • B. Allocating memory for dynamic variables
  • C. Managing stack space for function calls
  • D. Distributing tasks among multiple processors
Q. What does the term 'subnetting' refer to in IP addressing?
  • A. Dividing a network into smaller networks
  • B. Combining multiple networks into one
  • C. Assigning static IP addresses
  • D. Changing the default gateway
Q. What does the term 'subnetting' refer to?
  • A. Dividing a network into smaller networks
  • B. Combining multiple networks into one
  • C. Changing the IP address of a device
  • D. None of the above
Q. What does the term 'subword tokenization' refer to?
  • A. Breaking words into smaller meaningful units
  • B. Combining multiple words into a single token
  • C. Ignoring punctuation in tokenization
  • D. Using only the first letter of each word
Q. What does the term 'supernetting' refer to?
  • A. Combining multiple subnets into a larger network
  • B. Dividing a network into smaller subnets
  • C. A method of IP address allocation
  • D. A type of routing protocol
Q. What does the term 'symbol table' refer to in a compiler?
  • A. A table of syntax rules
  • B. A data structure that stores information about identifiers
  • C. A list of optimization techniques
  • D. A representation of the abstract syntax tree
Q. What does the term 'token' refer to in the context of lexical analysis?
  • A. A sequence of characters
  • B. A data structure for syntax trees
  • C. A meaningful sequence of characters
  • D. A type of error in parsing
Q. What evaluation metric is commonly used to assess the performance of a classification model?
  • A. Accuracy
  • B. Mean Squared Error
  • C. Silhouette Score
  • D. R-squared
Q. What happens if a recursive function does not have a base case?
  • A. It will run indefinitely
  • B. It will return a default value
  • C. It will throw an error
  • D. It will terminate successfully
Q. What happens if binary search is applied to a linked list?
  • A. It works efficiently
  • B. It cannot be applied
  • C. It works but is inefficient
  • D. It requires additional data structures
Q. What happens if Dijkstra's algorithm encounters a negative weight edge?
  • A. It will still find the shortest path.
  • B. It will fail to find a solution.
  • C. It will ignore the edge.
  • D. It will return an incorrect path.
Q. What happens if Dijkstra's algorithm is applied to a graph with negative weight edges?
  • A. It will still find the shortest path.
  • B. It may produce incorrect results.
  • C. It will not terminate.
  • D. It will find the longest path.
Q. What happens if Dijkstra's algorithm is run on a graph with a negative weight cycle?
  • A. It will return the correct shortest path
  • B. It will enter an infinite loop
  • C. It will terminate with an error
  • D. It may return incorrect results
Q. What happens if the array is not sorted before applying binary search?
  • A. It will still work
  • B. It will give incorrect results
  • C. It will run indefinitely
  • D. It will throw an error
Q. What happens if the array is not sorted before performing a binary search?
  • A. It will still work
  • B. It will give incorrect results
  • C. It will throw an error
  • D. It will sort the array first
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