Chapter1-How data is communicated to other systems.

Chapter2- System of tags which contain data that can be read from a distance using radio waves.

Chapter2- Storage systems which are found inside the computer and are electronic. RAM and ROM are examples. : Primary storage

Chapter3- Software, whose source code is freely available and can be changed and distributed.

Chapter 3- Application software for creating written documents such as letters or essays.

Chapter3- Application software for creating and editing presentations, animations, and video. → spreadsheet software

Chapter4- Hardware or software that controls access to a network. → firewall

Chapter4- Computer on a network that provides services or performs work for others.

Chapter4- Unique address embedded in network connected devices.

Chapter4- System that automatically assigns IP addresses to computers on a network.

Chapter4- Network in which all computers are equal and there are no centralised servers.

Chapter4-To transfer data from a client computer to a server → download

Chapter5- Technique used by criminals to alter DNS records and drive users to fake sites, to committing phishing.

Chapter5- Result of encrypting plaintext. → encryption key

Chapter5-vulnerability scanner → Software to scan a system for potential security problems

Chapter5- Encryption system in which two keys are used: a public key used only to encrypt data, and a private key used only to decrypt it.