Networks in GCSE Computer Science

What is the purpose of a router in a network?

• Routers are used to cook food for the network users

• The purpose of a router is to play music in the network

• A router's main function is to predict the weather for the network

• The purpose of a router in a network is to forward data packets between computer networks and provide network security.

Explain the difference between LAN and WAN networks.

• LAN networks are wireless, while WAN networks are wired.

• WAN networks are limited to a small area, while LAN networks cover a larger geographical area.

• LAN networks cover a larger geographical area than WAN networks.

• LAN networks are limited to a small area, while WAN networks cover a larger geographical area.

What is the function of a MAC address in networking?

• The function of a MAC address in networking is to uniquely identify a device on a network.

• MAC addresses are randomly assigned to devices

• MAC addresses are only relevant for wireless networks

• A MAC address is used to determine the speed of the network connection

What is the role of a firewall in network security?

• A firewall is used to enhance network speed by removing security restrictions

• Firewalls are designed to allow all network traffic without any filtering

• The main purpose of a firewall is to provide physical security to network devices

• The role of a firewall in network security is to monitor and control incoming and outgoing network traffic based on predetermined security rules.

Define the term 'bandwidth' in the context of networking.

• Minimum data transfer rate of a network

• Amount of memory storage on a device

• Maximum data transfer rate of a network or internet connection.

• Number of devices connected to a network

What is the significance of the OSI model in networking?

• The OSI model provides a framework for understanding networking protocols and their interactions.

• The OSI model is a proprietary standard developed by a single company.

• The OSI model is used for physical layer communication only.

• The OSI model is outdated and no longer relevant in modern networking.

List three common network topologies and explain each briefly.

• Tree

• Hybrid

• Mesh

• Bus, star, and ring

What is the difference between TCP and UDP protocols?

• TCP is connectionless and provides reliable data delivery, while UDP is connection-oriented and does not guarantee delivery.

• TCP and UDP are both connectionless protocols.

• TCP and UDP are both connection-oriented protocols.

• TCP is connection-oriented and provides reliable data delivery, while UDP is connectionless and does not guarantee delivery.

Explain the concept of IP addressing and subnetting.

• IP addressing is used for physical addressing only, while subnetting is for logical addressing.

• Subnetting is used to increase network security, while IP addressing is for routing purposes.

• IP addressing assigns unique numerical addresses to devices, while subnetting divides a network into smaller sub-networks.

• IP addressing assigns random addresses to devices, while subnetting organizes devices based on their manufacturer.

What is a DNS server and how does it work?

• A DNS server is a software application that plays music based on website names.

• A DNS server is a physical device used to store website data.

• A DNS server is a type of computer virus that steals personal information from users.

• A DNS server is a computer server that translates domain names into IP addresses to enable users to access websites.