Infinity Code Nexus

1. Which data type is used to store a single character in C?

• a) char

• b) string
  

• c) int

• d) float

2. What is the output of printf("%d", 5 / 2); in C?

• a) 2.5

• b) 2

• c) 3

• d) Compilation error

3. Which of the following correctly declares a pointer in C?

• a) int ptr;

• b) int *ptr;

• c) int& ptr;

• d) ptr int;

4. Which of the following loops in C executes at least once?

• a) for

• b) while

• c) do-while

• d) foreach

5. What will sizeof(int) return in most modern compilers?

• a) 2

• b) 4

• c) 8

• d) Undefined

6. Which of these is NOT a frontend technology?

• a) React.js

• b) Angular

• c) Express.js

• d) Vue.js

7. Which protocol is commonly used for secure communication between frontend and backend?

• a) HTTP

• b) FTP

• c) HTTPS

• d) SMTP

8. What is the purpose of JWT in full-stack development?

• a) Encrypting frontend code

• b) Authenticating users

• c) Creating API endpoints

• d) Managing databases

9. Which NoSQL database is widely used in full-stack development?

• a) PostgreSQL

• b) MySQL

• c) MongoDB

• d) Oracle

10. What is the default HTTP method used for fetching data?

• a) POST

• b) GET

• c) DELETE

• d) PUT