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. In Dijkstra's algorithm, what data structure is commonly used to select the next node with the smallest tentative distance?
  • A. Array
  • B. Stack
  • C. Priority Queue
  • D. Linked List
Q. In Dijkstra's algorithm, what data structure is commonly used to select the next node to process?
  • A. Stack
  • B. Queue
  • C. Priority Queue
  • D. Array
Q. In Dijkstra's algorithm, what data structure is primarily used to keep track of the minimum distance from the source vertex?
  • A. Array
  • B. Stack
  • C. Queue
  • D. Priority Queue
Q. In Dijkstra's algorithm, what data structure is primarily used to keep track of the shortest path estimates?
  • A. Array
  • B. Linked List
  • C. Stack
  • D. Priority Queue
Q. In Dijkstra's algorithm, what data structure is typically used to keep track of the shortest path estimates?
  • A. Array
  • B. Linked List
  • C. Stack
  • D. Priority Queue
Q. In Dijkstra's algorithm, what does the 'tentative distance' represent?
  • A. The actual shortest distance found
  • B. The estimated distance to the destination
  • C. The distance from the source to the current node
  • D. The maximum distance in the graph
Q. In Dijkstra's algorithm, what does the priority queue store?
  • A. All vertices
  • B. Only visited vertices
  • C. Only unvisited vertices
  • D. Only the shortest path vertices
Q. In Dijkstra's algorithm, what is the purpose of the 'visited' set?
  • A. To store all vertices
  • B. To keep track of the shortest path
  • C. To avoid processing the same vertex multiple times
  • D. To store the distances from the source
Q. In dynamic programming, what does the term 'overlapping subproblems' mean?
  • A. Subproblems that can be solved independently
  • B. Subproblems that share sub-subproblems
  • C. Subproblems that are never reused
  • D. Subproblems that require sorting
Q. In dynamic programming, what does the term 'overlapping subproblems' refer to?
  • A. Problems that can be solved in parallel
  • B. Subproblems that are solved multiple times
  • C. Subproblems that are independent
  • D. Problems that require sorting
Q. In dynamic programming, what does the term 'state' refer to?
  • A. The current value of a variable
  • B. A specific subproblem
  • C. The final solution
  • D. The input size
Q. In dynamic programming, what is memoization?
  • A. A technique to store results of expensive function calls
  • B. A method to sort data efficiently
  • C. A way to represent data in a tree structure
  • D. A technique to optimize space complexity
Q. In dynamic programming, what is the 'optimal substructure' property?
  • A. The optimal solution can be constructed from optimal solutions of its subproblems
  • B. The problem can be solved in linear time
  • C. The solution requires sorting the input data
  • D. The problem can be solved using a greedy approach
Q. In dynamic programming, what is the main advantage of using memoization?
  • A. Reduces space complexity
  • B. Avoids redundant calculations
  • C. Improves sorting speed
  • D. Simplifies code structure
Q. In dynamic programming, what is the primary advantage of using a bottom-up approach over a top-down approach?
  • A. Easier to implement
  • B. Less memory usage
  • C. Faster execution time
  • D. More intuitive
Q. In dynamic programming, what is the primary purpose of the 'table' or 'array' used?
  • A. To store intermediate results
  • B. To sort data
  • C. To track function calls
  • D. To manage memory allocation
Q. In dynamic programming, what is the purpose of a state transition equation?
  • A. To define the base case
  • B. To describe how to move from one state to another
  • C. To optimize the algorithm
  • D. To sort the data
Q. In dynamic programming, what is the purpose of memoization?
  • A. To sort data
  • B. To store intermediate results
  • C. To optimize space complexity
  • D. To reduce time complexity
Q. In dynamic programming, what is the purpose of the 'base case'?
  • A. To initialize the DP table
  • B. To define the recursive function
  • C. To handle edge cases
  • D. To optimize the algorithm
Q. In dynamic programming, what is the purpose of the 'state'?
  • A. To represent the final solution
  • B. To store the results of subproblems
  • C. To define the problem constraints
  • D. To track the number of iterations
Q. In dynamic programming, what is the purpose of the 'table' or 'array' used?
  • A. To store intermediate results.
  • B. To sort the input data.
  • C. To keep track of function calls.
  • D. To manage memory allocation.
Q. In dynamic programming, what is the purpose of the 'table'?
  • A. To store intermediate results
  • B. To keep track of function calls
  • C. To optimize space complexity
  • D. To visualize the algorithm
Q. In dynamic programming, what is the term for breaking a problem into smaller subproblems?
  • A. Memoization
  • B. Recursion
  • C. Optimal substructure
  • D. Overlapping subproblems
Q. In evaluating clustering algorithms, which metric assesses the compactness of clusters?
  • A. Silhouette Score
  • B. Accuracy
  • C. F1 Score
  • D. Mean Squared Error
Q. In feature engineering, what does 'one-hot encoding' achieve?
  • A. It reduces the dimensionality of the dataset
  • B. It converts categorical variables into a numerical format
  • C. It normalizes the data
  • D. It increases the number of features exponentially
Q. In feature engineering, what does normalization refer to?
  • A. Scaling features to a common range
  • B. Removing outliers from the dataset
  • C. Encoding categorical variables
  • D. Selecting important features
Q. In finance, neural networks are used for which of the following?
  • A. Customer service automation
  • B. Fraud detection
  • C. Inventory management
  • D. Supply chain optimization
Q. In hierarchical clustering, what does 'agglomerative' mean?
  • A. Clusters are formed by splitting larger clusters
  • B. Clusters are formed by merging smaller clusters
  • C. Clusters are formed randomly
  • D. Clusters are formed based on a predefined distance
Q. In hierarchical clustering, what does 'agglomerative' refer to?
  • A. A method that starts with all points as individual clusters
  • B. A method that requires the number of clusters to be predefined
  • C. A technique that merges clusters based on distance
  • D. A type of clustering that uses a centroid
Q. In hierarchical clustering, what does agglomerative clustering do?
  • A. Starts with all data points as individual clusters and merges them
  • B. Starts with one cluster and splits it into smaller clusters
  • C. Randomly assigns data points to clusters
  • D. Uses a predefined number of clusters
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