GCSE CS Comp 1 Unit 3 - WAN & Internet Basics

What does WAN stand for in computer networking?

• Wide Area Network

• Wireless Access Network

• Wired Area Network

• Web Access Network

Answer explanation

In computer networking, WAN stands for Wide Area Network, which is a network that covers a broad area such as cities or countries.

Which of the following is a primary function of a backbone cable in a WAN?

• To connect local devices within a small area

• To provide high-speed data transfer between different networks

• To store data temporarily

• To manage user access permissions

Answer explanation

To provide high-speed data transfer between different networks

What does IoT stand for?

• Internet of Technology

• Internet of Things

• Internet of Telecommunications

• Internet of Transactions

Answer explanation

IoT stands for Internet of Things, which refers to the network of physical devices embedded with sensors, software, and connectivity to exchange data over the internet.

Which of the following is a characteristic of an IP address?

• It is a unique identifier for a device on a network

• It is used to store data

• It is a type of network hardware

• It is a protocol for email communication

Answer explanation

An IP address is a unique identifier for a device on a network, allowing devices to communicate with each other by sending and receiving data packets.

What is circuit switching primarily used for?

• Establishing a dedicated communication path between two devices

• Dividing data into packets for transmission

• Routing data through multiple paths

• Encrypting data for security

Answer explanation

Circuit switching is primarily used for establishing a dedicated communication path between two devices.

Which of the following best describes packet switching?

• Data is sent in a continuous stream

• Data is divided into packets and sent independently

• Data is stored in a central server

• Data is encrypted before transmission

Answer explanation

Data is divided into packets and sent independently

What information is typically included in an IP packet header?

• The data content

• The sender's and receiver's IP addresses

• The encryption key

• The file type

Answer explanation

The sender's and receiver's IP addresses are typically included in an IP packet header.

What is the primary purpose of IP packet routing?

• To encrypt data packets

• To determine the best path for data to travel across a network

• To store data packets temporarily

• To compress data packets

Answer explanation

To determine the best path for data to travel across a network

What does DNS stand for?

• Domain Name System

• Data Network Service

• Digital Network System

• Domain Network Service

Answer explanation

DNS stands for Domain Name System, which is the correct choice among the options provided.

Which of the following is a function of DNS?

• To translate domain names into IP addresses

• To store user data

• To encrypt data

• To manage network hardware

Answer explanation

The function of DNS is to translate domain names into IP addresses, making it easier for users to access websites and services on the internet.