Networks in GCSE CS

What is a network?

• A network is a group of unrelated devices.

• A network is a collection of interconnected devices.

• A network is a single device.

• A network is a physical barrier.

Explain the difference between LAN and WAN.

• LAN connects devices within a limited area, while WAN connects devices over a large geographical area.

• LAN has slower data transfer speeds compared to WAN.

• LAN and WAN are interchangeable terms with no actual difference.

• LAN is used for wireless connections only, while WAN is used for wired connections.

What is a router used for in a network?

• A router is used to water plants in a network.

• A router is used to play music in a network.

• A router is used to cook food in a network.

• A router is used to forward data packets between computer networks.

Fill in the blank: In a network, data is transferred in the form of _________.

• folders

• bytes

• packets

• files

What is the purpose of an IP address?

• To make coffee

• To predict the weather

• To uniquely identify a device on a network

• To play music

What is a firewall and why is it important in a network?

• A firewall is only necessary for personal devices, not networks

• A firewall is used to increase network speed by removing security measures

• A firewall is important in a network because it helps prevent unauthorized access, protects against cyber threats, and ensures network security by monitoring and controlling traffic flow.

• A firewall is designed to share sensitive information with unauthorized users

Explain the concept of packet switching.

• Packet switching requires physical switching of cables to transmit data.

• Packet switching involves encrypting data before transmission.

• Packet switching involves sending data in a continuous stream without any division.

• Packet switching involves breaking data into packets, sending them independently, and reassembling them at the destination.

What is a MAC address and how is it different from an IP address?

• A MAC address is a hardware address assigned by the manufacturer for local communication, while an IP address is a logical address assigned by a network administrator for global communication.

• A MAC address is a unique identifier for software applications, while an IP address is a generic identifier for hardware devices.

• A MAC address is used for wireless communication, while an IP address is used for wired communication.

• A MAC address is a software address assigned by the user for local communication, while an IP address is a hardware address assigned by the manufacturer for global communication.

What is the role of DNS in a network?

• DNS resolves domain names to IP addresses.

• DNS manages network hardware

• DNS encrypts network traffic

• DNS optimizes network speed