Year 9 Networks Lesson 1: What is a network?

What is a network?

• A collection of computers and devices connected together to share resources and information.

• A single computer used for personal tasks.

• A type of software used for creating documents.

• A device used to print documents.

Answer explanation

A network is defined as a collection of computers and devices connected together to share resources and information, making this the correct choice. The other options describe unrelated concepts.

Which of the following is a type of network?

• PAN

• LAN

• WAN

• All of the above

Answer explanation

PAN (Personal Area Network), LAN (Local Area Network), and WAN (Wide Area Network) are all types of networks. Therefore, the correct answer is 'All of the above' as it includes all mentioned types.

What does PAN stand for in networking?

• Personal Area Network

• Public Access Network

• Private Area Network

• Professional Access Network

Answer explanation

In networking, PAN stands for Personal Area Network, which refers to a small network used for connecting devices like smartphones, tablets, and computers within a short range, typically within a few meters.

How does packet switching work?

• It sends data in a continuous stream from sender to receiver.

• It divides data into packets and sends them independently through the network.

• It uses a single path to send data from sender to receiver.

• It compresses data to save space before sending.

Answer explanation

Packet switching works by dividing data into smaller packets that are sent independently through the network. This allows for more efficient use of network resources compared to sending data as a continuous stream.

What is one benefit of using a network?

• Increased isolation of devices.

• Easier sharing of resources and information.

• Higher cost of maintenance.

• More complex setup process.

Answer explanation

One key benefit of using a network is the easier sharing of resources and information, allowing devices to communicate and collaborate effectively, unlike increased isolation or higher maintenance costs.

What is one drawback of using a network?

• Improved communication.

• Increased security risks.

• Reduced data sharing.

• Simplified troubleshooting.

Answer explanation

One drawback of using a network is increased security risks. Networks can expose data to unauthorized access and cyber threats, making security a significant concern compared to isolated systems.

Which type of network is typically used within a single building or campus?

• PAN

• LAN

• WAN

• MAN

Answer explanation

A LAN (Local Area Network) is designed for a limited area, such as a single building or campus, allowing devices to connect and communicate efficiently. In contrast, PAN, WAN, and MAN cover broader areas.

Which type of network covers the largest geographical area?

• PAN

• LAN

• WAN

• CAN

Answer explanation

A WAN (Wide Area Network) covers the largest geographical area, connecting multiple LANs (Local Area Networks) and other networks over long distances, unlike PANs (Personal Area Networks) and CANs (Campus Area Networks) which are limited to smaller areas.

What is a key difference between LAN and WAN?

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

• LAN uses your own hardware, WAN often leases/rents hardware such as long distance cabling.

• WAN is used within a single room, while LAN covers multiple buildings.

• LAN requires satellite connections, while WAN uses cables.

Answer explanation

The correct choice highlights that LAN typically uses your own hardware for local networking, while WAN often involves leasing or renting hardware for long-distance communication, making it a key distinction.

Which of the following is a characteristic of a Personal Area Network (PAN)?

• It connects devices over a few miles.

• It is used to connect devices within a few feet or metres.

• It requires a dedicated server.

• It is used to connect multiple buildings.

Answer explanation

A Personal Area Network (PAN) is designed to connect devices within a short range, typically within a few feet or meters, making the correct choice the one that states this characteristic.