MODULE 4 TELECOMMUNICATIONS AND NETWORKS Unit 4.1 • The basics of telecommunications Telecommunications Electromagnetic waves and spectrum Radio waves Telecommunications via cables Wireless communication Unit 4.2 • The basics of networks Networks and their components Types of networks The internet and how it works Services of the Internet and the www The world wide web From web 1.0 to web 4.0 Unit 4.3 • The applications of the web Cloud computing Blogs, forums, instant messaging, and social media E-commerce, customer profiling, and big data Aggregators Gaming, streaming, and smart TVs File sharing and collaboration Applications and widgets Unit 4.4 • The protection of computers Computer threats Best practices to protect computers Software and hardware to protect computers Encryption