Computer Knowledge for Grade 9

What is the main function of an operating system?

• To provide internet connectivity

• The main function of an operating system is to manage computer hardware and software resources.

• To run applications without hardware

• To manage user passwords

Name two popular operating systems used today.

• Ubuntu Server

• Linux Mint

• Chrome OS

• Microsoft Windows, macOS

What is the purpose of a file system in an operating system?

• To manage user permissions and access control.

• To enhance the graphical user interface of the operating system.

• To provide network connectivity for applications.

• The purpose of a file system is to manage data storage and retrieval on a storage device.

Define what a computer network is.

• A computer network is a system of interconnected computers and devices that can communicate and share resources.

• A computer network is a type of software used for programming.

• A computer network is a single computer that operates independently.

• A computer network is a collection of unrelated devices that cannot communicate.

What are the two main types of computer networks?

• Local Area Network (LAN) and Wide Area Network (WAN)

• Cloud Network and Hybrid Network

• Virtual Private Network (VPN) and Storage Area Network (SAN)

• Metropolitan Area Network (MAN) and Personal Area Network (PAN)

What does LAN stand for, and how is it different from WAN?

• LAN is used for global communications.

• LAN is a type of internet connection.

• LAN stands for Local Area Network.

• LAN stands for Wide Area Network.

What is the role of a router in a network?

• To amplify signals in a network

• To provide wireless connectivity to devices

• To store data packets for later use

• The role of a router in a network is to direct data packets between different networks and determine the best path for data transmission.

Explain the term 'IP address'.

• An IP address is a unique identifier for a device on a network.

• A type of software used for network management.

• A protocol for transferring files over the internet.

• A method for encrypting data on a network.

What is the difference between a public and a private IP address?

• Public IP addresses are used for local networks, while private IP addresses are accessible over the internet.

• Public IP addresses are always static, while private IP addresses are always dynamic.

• Private IP addresses can be accessed from anywhere on the internet, while public IP addresses are restricted to local use.

• Public IP addresses are accessible over the internet, while private IP addresses are used within local networks and are not accessible from the internet.

What is the function of a firewall in a computer network?

• To provide a backup for network devices.

• To increase the speed of the network connection.

• To store all network data for future analysis.

• The function of a firewall in a computer network is to monitor and control network traffic to protect against unauthorized access and threats.