Computer Systems for Grade 9

What is the main function of the CPU in a computer system?

• The main function of the CPU is to execute instructions and process data.

• To provide internet connectivity to the system.

• To store data permanently in the hard drive.

• To manage the computer's power supply.

Define the term 'motherboard' and its role in a computer.

• The motherboard is a storage device that holds data permanently.

• The motherboard is the central circuit board that connects and allows communication between all hardware components in a computer.

• The motherboard is a power supply unit that provides electricity to the computer.

• The motherboard is a type of software that manages system resources.

What are the differences between RAM and ROM?

• RAM is volatile and used for temporary storage; ROM is non-volatile and used for permanent storage.

• RAM is used for permanent storage; ROM is used for temporary storage.

• Both RAM and ROM are volatile and used for temporary storage.

• RAM is non-volatile and used for permanent storage; ROM is volatile and used for temporary storage.

Explain the purpose of an operating system.

• The purpose of an operating system is to manage computer resources and provide a user interface for interaction with the hardware.

• To serve as a database management system.

• To provide internet connectivity for all devices.

• To enhance the graphics performance of a computer.

What is the function of a power supply unit in a computer?

• To cool down the computer's components.

• To store data permanently in the computer.

• The function of a power supply unit in a computer is to convert and supply electrical power to the computer's components.

• To manage the computer's software applications.

Describe the role of input and output devices in a computer system.

• Input devices only store data permanently.

• Input devices are only used for gaming purposes.

• Input devices receive data from users, while output devices present processed data to users.

• Output devices are used to input commands into the computer.

What is the difference between hardware and software?

• Software refers to the physical components of a computer.

• Hardware is the software that runs on a computer.

• Hardware is the physical part of a computer; software is the programs that run on it.

• Hardware and software are the same thing.

Explain what a network is and its importance in computing.

• A network is a system of interconnected computers and devices that allows for communication and resource sharing, which is crucial for data exchange and collaboration in computing.

• A network is a collection of unrelated devices that do not communicate.

• A network is a type of software that runs on a computer.

• A network is a single computer that operates independently.

What are the common types of storage devices used in computers?

• Hard Disk Drives (HDD), Solid State Drives (SSD), USB flash drives, optical discs (CDs, DVDs)

• Network Attached Storage (NAS)

• Floppy Disks

• Magnetic Tape Drives

Define the term 'software application' and give two examples.

• Notepad and VLC Media Player

• Microsoft Excel and Mozilla Firefox

• Adobe Photoshop and Safari

• Examples of software applications are Microsoft Word and Google Chrome.