Computer Hardware and Organisation Quiz

A technique used by codes to convert an analog signal into a digital bit stream is known as

• Pulse code modulation

• Pulse stretcher

• Query processing

• Queue management

Explain the concept of memory hierarchy in computer hardware.

• Memory hierarchy is the concept of arranging computer software in a hierarchical order, with different programs having different functionalities.

• Memory hierarchy is the arrangement of computer hardware in a vertical order, with different components having different colors.

• Memory hierarchy is the organization of computer memory in a hierarchical order, with different types of memory having different speeds and sizes.

• Memory hierarchy is the process of organizing computer files in a hierarchical order, with different folders having different access levels.

Name two input devices used in computer systems.

• Monitor and printer

• Scanner and webcam

• Keyboard and mouse

• Headphones and microphone

What is the difference between HDD and SSD storage devices?

• SSD has a smaller storage capacity than HDD

• HDD uses spinning disks to store data, while SSD uses flash memory for faster access.

• HDD is more expensive than SSD

• HDD and SSD are the same type of storage device

Describe the architecture of a CPU.

• The architecture of a CPU includes components such as the motherboard, power supply, and hard drive.

• The architecture of a CPU includes components such as the keyboard, mouse, and monitor.

• The architecture of a CPU includes components such as the RAM, graphics card, and cooling fan.

• The architecture of a CPU includes components such as the control unit, arithmetic logic unit, registers, cache memory, and buses.

What are the primary functions of RAM in a computer system?

• To permanently store data and instructions

• To control the flow of electricity in the computer

• To display images and videos on the screen

• To temporarily store data and instructions that the CPU needs to perform tasks

List three examples of output devices used in computer systems.

• Keyboard, mouse, and scanner

• Projector, microphone, and webcam

• CPU, RAM, and hard drive

• Monitor, printer, and speakers

Explain the concept of cache memory in CPU architecture.

• Cache memory is used to store backup data in case of power failure.

• Cache memory is only used for storing large files and documents.

• Cache memory is a type of volatile memory that loses data when the computer is turned off.

• Cache memory stores frequently accessed data and instructions to reduce the average time to access data from the main memory.

Differentiate between optical and magnetic storage devices.

• Optical storage devices use laser technology to read and write data, while magnetic storage devices use magnetic fields to store and retrieve data.

• Optical storage devices use physical buttons to read and write data, while magnetic storage devices use touch screens to store and retrieve data.

• Optical storage devices use sound waves to read and write data, while magnetic storage devices use light waves to store and retrieve data.

• Optical storage devices use electricity to read and write data, while magnetic storage devices use heat to store and retrieve data.

What role do peripheral devices play in a computer system?

• They slow down the computer system

• They are not compatible with computer systems

• They are only used for decoration

• They expand the capabilities of a computer system by providing input, output, and storage functions.