Unit 12 IGCSE Networks and the Internet

What is the purpose of cookies on a website?

• Baking recipes

• Tracking user preferences

• Playing games

Answer explanation

Cookies on a website are used for tracking user preferences, not for baking recipes or playing games.

What is an IP address used for?

• Sending emails

• Identifying devices on a network

• Playing online games

Answer explanation

An IP address is used for identifying devices on a network, allowing them to communicate with each other and access resources within the network.

What is a digital currency?

• Physical coins and notes

• Currency that only exists electronically

• Precious metals

Answer explanation

A digital currency is currency that only exists electronically, not in physical form like coins and notes or precious metals.

How does a router enable communication between different networks?

• By converting data formats from one network to another

• By playing music on the network

• By sending emails between networks

Answer explanation

A router enables communication between different networks by converting data formats from one network to another.

How are MAC addresses usually represented?

• Decimal

• Binary

• Hexadecimal

Answer explanation

MAC addresses are usually represented in hexadecimal format, using a combination of numbers and letters.

How does a wireless router differ from a wired router?

• Wireless routers do not require an internet connection

• Wireless routers use built-in antennas to broadcast WiFi signals

• Wired routers use radio frequency signals for communication

Answer explanation

Wireless routers use built-in antennas to broadcast WiFi signals, unlike wired routers that require physical connections for data transmission.

What does a URL stand for?

• Universal Resource Locator

• Uniform Resource Locator

• Unique Resource Locator

Answer explanation

A URL stands for Universal Resource Locator, making it the correct choice among the options provided.

What is the function of hypertext transfer protocol (HTTP)?

• Secure data transmission

• Display web pages

• Transfer hypertext documents

Answer explanation

The function of hypertext transfer protocol (HTTP) is to transfer hypertext documents.

What is the main function of a switch in a network?

• Filters and forwards data packets to the intended recipient device

• Blocks all incoming network traffic

• Stores data on the network

Answer explanation

The main function of a switch in a network is to filter and forward data packets to the intended recipient device, ensuring efficient data transmission.

How does a wireless network interface card (WNIC) communicate with networks?

• Through radio frequency signals

• Through physical cables

• Through infrared signals

Answer explanation

A wireless network interface card (WNIC) communicates with networks through radio frequency signals, making the correct choice 'Through radio frequency signals'.