Computer Knowledge - MCQ Practice Questions

What will be the value of 'x' after execution of the following code? int x = 10; x += 5; x *= 2;

Which header file must be included to use the printf() function in C?

Which normal form eliminates transitive dependencies in a database table?

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

Which SQL command is used to remove a table structure along with its data?

In a hash table, what is the primary cause of collision?

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

What does the acronym ACID stand for in database transactions?

Which of the following is a non-relational database designed for handling unstructured data at scale?

What does ACID stand for in database transactions?

In SQL, which JOIN returns only matching records from both tables?

What is the time complexity of searching in a balanced binary search tree?

In cloud computing, what does IaaS stand for?

In cybersecurity, what is the primary purpose of a firewall?

Which of the following is a ACID property that ensures all or nothing transaction execution?

What is the primary advantage of using INNER JOIN over OUTER JOIN in SQL?

In a relational database, what does normalization primarily aim to eliminate?

Which algorithm has O(n log n) time complexity and is preferred for large datasets in modern databases?

What is the primary purpose of indexing in databases?

In the OSI model, which layer is responsible for routing and logical addressing?