Data Manipulation

1. 1. What is the main function of the ALU (Arithmetic Logic Unit) in a computer's CPU?

• a) To store data

• b) To perform arithmetic and logic operations

• c) To control the flow of information in the system

• d) To handle input and output operations

2 . What is a bit?

• a) A type of software

• b) A small piece of information (0 or 1)

• c) A part of a computer case

• d) A unit of measurement for speed

3. 3. What do registers do in a CPU?

• a) Store data temporarily

• b) Print documents

• c) Connect to the internet

• d) Play games

4. 4. Which language is easier for humans to read?

• a) Machine language

• b) Assembly language

5. 5. How many bits are in a byte?

• a) 4

• b) 8

• c) 16

• d) 32

6. 6. What system do computers use to store data?

• a) decimal

• b) hexadecimal

• c) binary

• d) octal

7. 7. Why do programmers use hexadecimal numbers?

• a) They are longer than binary

• b) They are easier to read than binary

• c) They are used for graphics only

• d) They are faster for the CPU

8. 8. What does the control unit do?

• a) Stores data

• b) Executes programs

• c) Directs the operation of the CPU

• d) Cleans the computer

9) What is the fetch-decode-execute cycle?

• a) A way to restart the computer

• b) The process a CPU uses to run instructions

• c) A method to save files

• d) A way to connect to Wi-Fi

10. 10. What do bitwise operations do?

• a) Add numbers

• b) Change the color of text

• c) Work with individual bits in binary

• d) Save files to a disk