Data Representation & Computer Systems Quiz

What is the decimal equivalent of the binary number 1010?

• 1100

• 1111

• 10

• 101

Convert the hexadecimal number 2F into binary.

• 11001111

• 00101111

• 00101011

• 10101111

How many bits are in a nibble?

• 6

• 4

• 10

• 8

Explain the concept of data encryption in the context of ethical considerations.

• Data encryption refers to the act of sharing sensitive data openly without protection.

• Data encryption is the process of deleting all information to ensure privacy.

• Data encryption is the process of converting plaintext into ciphertext using algorithms and keys to secure information.

• Data encryption involves converting images into audio files for security purposes.

What is the purpose of the CPU in a computer system?

• To fly airplanes

• To execute instructions, perform calculations, and manage data flow.

• To predict the weather

• To bake cookies

Which of the following is an example of system software: a) Microsoft Word b) Windows Operating System c) Adobe Photoshop d) Google Chrome

• b) Windows Operating System

• a) Microsoft Word

• d) Google Chrome

• c) Adobe Photoshop

What is the result of the Boolean expression: NOT(True AND False)?

• NOT(True OR False)

• True

• True AND False

• False

Describe the function of the ALU in the CPU.

• The ALU stores data temporarily for processing in the CPU.

• The ALU performs arithmetic and logical operations on data.

• The ALU controls the flow of electricity in the CPU.

• The ALU is responsible for managing peripheral devices connected to the CPU.

What type of memory is volatile and loses its data when the power is turned off?

• SSD

• ROM

• RAM

• Cache

What is the output of the following Python code: print(5 + 3 * 2)

• 7

• 11

• 10

• 16