Computer Knowledge - MCQ Practice Questions

What is the primary function of a hash table data structure?

What is the time complexity of the binary search algorithm on a sorted array?

What is the purpose of the COMMIT statement in SQL transactions?

Which cryptographic algorithm is currently recommended by NIST for symmetric encryption?

Which SQL JOIN returns only matching records from both tables?

In database indexing, which structure provides O(log n) search complexity?

Which data structure is best for implementing a priority queue in heapsort algorithm?

What is the main advantage of cloud computing's elasticity?

In SQL, what does the GROUP BY clause do?

In a relational database, which normal form eliminates partial dependencies and is considered essential for most practical database designs?

Which of the following is a characteristic of NoSQL databases that makes them suitable for handling big data in cloud environments?

Which of the following represents a vulnerability in SQL query construction that can be exploited through malicious user input, and can be prevented using parameterized queries?