UNIT 1: THE ONLINE WORLD The internet

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The internet

Understand what the internet is, how it works, and how it is structured, including:

● the internet as a global network of interconnected computers

● roles of Points of Presence (PoP) and Network Access Points (NAP) in the

infrastructure of the internet.

● internet infrastructure in terms of clients, servers, routers, networks and connecting

backbones

● when it is appropriate to use different internet connection methods including

broadband, wireless and dial-up, and advantages and disadvantages of alternative

connection methods

● Internet Protocols (IP), including Transmission Control Protocol (TCP) and File

Transfer Protocol (FTP)

● the role of an Internet Service Provider (ISP)

● the main services offered by Internet Service Providers (ISPs) including email,

web space, internet access and online support

● the relationship between bandwidth and transmission rates.