ICT Chapter 4 IGCSE: Common Network Devices and Terms

What is a router?

• A kitchen appliance used for shaping wood

• A networking device that forwards data packets between computer networks.

• A type of musical instrument

• A type of footwear

Define the term 'LAN'.

• Local Access Network

• Large Area Network

• Limited Area Network

• Local Area Network

What is the purpose of a modem in a network?

• The purpose of a modem in a network is to compress and decompress data for faster transmission.

• The purpose of a modem in a network is to modulate and demodulate signals for transmission over communication lines.

• The purpose of a modem in a network is to amplify and attenuate signals for better reception.

• The purpose of a modem in a network is to encrypt and decrypt data for secure communication.

Explain the function of a switch in a network.

• The function of a switch in a network is to filter out unwanted data from the network.

• The function of a switch in a network is to connect multiple devices within a local area network (LAN) and forward data to the appropriate destination using packet switching.

• The function of a switch in a network is to regulate the flow of electricity within the network.

• The function of a switch in a network is to provide wireless connectivity to the devices within the network.

What is a firewall and what is its role in a network?

• A firewall is a type of computer virus that spreads through a network and disrupts communication

• A firewall is a network security device that monitors and controls incoming and outgoing network traffic based on predetermined security rules. Its role is to establish a barrier between a trusted internal network and untrusted external network, such as the internet, and to block or allow traffic based on a set of security rules.

• A firewall is a physical barrier made of concrete and steel used to separate different sections of a network

• A firewall is a type of software used to create virtual private networks (VPNs) for secure communication

What is the difference between a hub and a switch?

• A hub and a switch both broadcast data to all devices

• A hub and a switch both intelligently forward data only to the intended device

• The main difference is that a hub broadcasts data to all devices, while a switch intelligently forwards data only to the intended device.

• A hub and a switch have no difference in their functionality

Define the term 'WAN'.

• Wide Array Node

• Wide Area Network

• Wireless Access Network

• Web Application Network

What is a network protocol?

• A network protocol is a type of computer virus

• A network protocol is a set of rules and conventions that govern how data is transmitted over a network.

• A network protocol is a type of hardware used for networking

• A network protocol is a type of programming language

Explain the concept of IP address.

• An IP address is a type of software used to protect against viruses

• An IP address is a type of email address used for sending messages over the internet

• An IP address is a unique numerical label assigned to each device connected to a computer network that uses the Internet Protocol for communication.

• An IP address is a code used to unlock restricted websites

What is the role of a network gateway?

• The role of a network gateway is to process and store data within a single network

• The role of a network gateway is to provide entertainment services to network users

• The role of a network gateway is to control and manage the flow of data between different networks, as well as provide security and routing functions.

• The role of a network gateway is to monitor and control physical access to a building