The CPU & Microprocessor Quiz for IGCSE

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

• To store data permanently

• To perform arithmetic and logic operations on a single chip

• To control output devices

• To manage input devices

How does increasing the number of CPU cores impact performance?

• Decreases performance

• No impact on performance

• Increases performance by allowing parallel processing

• Reduces the clock speed

In the context of Automatic Repeat Request (ARQ), what does a negative acknowledgement transmission indicate?

• The data is correct

• An error has occurred, and data is corrupted

• The receiver is waiting for a time-out

• The sender should wait before resending the data

What are the main hardware components of a computer system?

• Input devices, primary memory, and secondary storage

• Output devices, software, and primary memory

• Input devices, CPU, and software

• Secondary storage, output devices, and CPU

What are the two main components of the CPU?

• Input Unit and Output Unit

• Arithmetic Unit and Logic Unit

• Control Unit and Memory Unit

• Control Unit and Arithmetic Logic Unit (ALU)

What is the Clock Speed of a CPU?

• The speed at which data is transferred between RAM and CPU

• The speed at which a computer can execute instructions

• The speed at which output devices operate

• The speed at which input devices respond to user actions

Explain the purpose of Cache in a CPU and its impact on performance.

• Cache stores permanent data, increasing storage capacity

• Cache stores infrequently used instructions for slow access

• Cache stores frequently used instructions for faster access, improving CPU performance

• Cache controls input/output operations to enhance performance

What is an embedded system primarily designed for?

• General-purpose computing tasks

• Multitasking operations

• A single function or limited specific functions within a larger device

• Storing large amounts of data

What is the purpose of firmware in embedded systems?

• Allows reprogramming by the user

• Provides temporary storage for CPU operations

• Controls the device and cannot be reprogrammed by the user

• Connects the CPU to input devices

What are the main components of a computer system ?

• Input devices, CPU, and output devices

• Input devices, secondary storage, and software

• Output devices, primary memory, and microprocessors

• Input devices, ALU, and microcontrollers