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Computer Knowledge - MCQ Practice Questions

Practice free Computer Knowledge multiple-choice questions with detailed answers and explanations. Perfect for competitive exam preparation.

309 questions | 100% Free

Q.21Medium

Which of the following is NOT a characteristic of relational databases?

Q.22Medium

What does CAP theorem state about distributed database systems?

Q.23Medium

In SQL, what is the difference between HAVING and WHERE clauses?

Q.24Medium

Which data structure is most efficient for implementing a LRU (Least Recently Used) cache?

Q.25Medium

In cloud computing, what does the term 'eventual consistency' refer to?

Q.26Medium

What is the primary benefit of containerization technology like Docker in modern application deployment?

Q.27Medium

In machine learning, what is a confusion matrix primarily used for?

Q.28Medium

Which encryption standard is currently recommended for securing data in transit over networks?

Q.29Medium

What is the time complexity of searching an element in a balanced Binary Search Tree?

Q.30Medium

What is the normal form that ensures no partial dependencies exist in a relation?

Q.31Medium

Which of the following is a correct SQL syntax for creating an index on multiple columns?

Q.32Medium

Which sorting algorithm has the best average-case time complexity for randomly distributed data?

Q.33Medium

What does ACID compliance in databases ensure?

Q.34Medium

Which cloud service model provides pre-configured application environments?

Q.35Medium

Which of the following best describes a graph data structure with no cycles?

Q.36Medium

In machine learning, what does overfitting mean?

Q.37Medium

What is the primary advantage of using MongoDB (NoSQL) over traditional relational databases?

Q.38Medium

In operating systems, what is a deadlock?

Q.39Medium

What is the correct order of operations for the Big O notation from least to most complex?

Q.40Medium

Which normalization form eliminates all non-key dependencies?