Computer Basics for Grade 12

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

• Play music

• Drive a car

• Execute instructions and perform calculations

• Cook food

Explain the difference between RAM and ROM.

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

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

• RAM and ROM are interchangeable terms with no actual difference.

• RAM is used for graphics processing, while ROM is used for audio processing.

What is a LAN and how does it differ from a WAN?

• A LAN is a network used by a single organization, while a WAN is a network shared by multiple organizations.

• A LAN is used for long-distance communication, while a WAN is used for short-distance communication.

• A LAN is a wireless network, while a WAN is a wired network.

• A LAN is a local network connecting devices in a limited area, while a WAN is a wide network connecting multiple LANs over a larger geographical area.

Name three input devices commonly used with computers.

• Monitor

• Printer

• Scanner

• Keyboard, Mouse, Microphone

What is the purpose of an operating system?

• To write poetry

• To cook dinner

• To play video games

• To manage computer resources and provide a user interface.

Describe the role of a router in a computer network.

• A router is used to store files on a computer network.

• A router is responsible for managing printer connections in a network.

• A router is designed to encrypt data transmissions within a network.

• A router forwards data packets between computer networks based on routing tables.

What is the difference between system software and application software?

• System software is only used by professionals, while application software is for personal use.

• System software provides a platform for running application software and manages computer hardware, while application software performs specific tasks for end-users.

• System software is more expensive than application software.

• System software is designed for mobile devices, while application software is for computers.

What is the function of a graphics card in a computer?

• To make coffee

• To render images, videos, and animations on a computer screen.

• To control the weather

• To bake cookies

Explain the concept of cloud computing.

• Cloud computing is a method of watering plants remotely

• Cloud computing is a type of weather forecasting technology

• Cloud computing refers to the delivery of computing services over the internet, providing access to servers, storage, databases, networking, software, and more. It allows for on-demand availability of resources, scalability, and cost-effectiveness.

• Cloud computing involves physical storage of data on floppy disks

What is the significance of a firewall in computer security?

• A firewall can be easily bypassed by hackers

• A firewall is used to increase internet speed

• A firewall is significant in computer security as it helps prevent unauthorized access and protects against cyber threats by monitoring and controlling network traffic based on security rules.

• A firewall is only necessary for personal computers