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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.121Medium

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

Q.122Medium

What does CAP theorem state about distributed database systems?

Q.123Medium

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

Q.124Medium

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

Q.125Medium

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

Q.126Medium

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

Q.127Medium

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

Q.128Medium

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

Q.129Medium

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

Q.130Medium

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

Q.131Medium

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

Q.132Medium

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

Q.133Medium

What does ACID compliance in databases ensure?

Q.134Medium

Which cloud service model provides pre-configured application environments?

Q.135Medium

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

Q.136Medium

In machine learning, what does overfitting mean?

Q.137Medium

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

Q.138Medium

In operating systems, what is a deadlock?

Q.139Medium

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

Q.140Medium

Which normalization form eliminates all non-key dependencies?