Quest 2

The Internet

explore how data is transmitted and secured in wired, wireless and mobile networks, for example: (ACTDIK023)

The internet, we all use it, but do you know how it works? Where does it live and who controls it? During this Quest you will discover how data is transmitted across the internet and how data is stored in cloud services online.

So how does the internet work?

Geek Speak

IP Address
Server
Data
Data Centre

The above video shows how a packet moves around the internet. A packet is a small amount of data sent over a network, such as a LAN or the Internet. Similar to a real-life package, each packet includes a source and destination as well as the content (or data) being transferred. When the packets reach their destination, they are reassembled into a single file or other contiguous block of data.

Quest 2 Activity 1:

Data Transmission

In your DigiQuest group, create a flow chart showing the path a packet takes when retrieving a website. Consider the IP address, the DSN and data centres, use the above video to help understand the sequence of events.

Fun Fact

Did you know sharks can slow down your internet connection?

How secure is your E-Folio?

Your E-Folio should live in your Google Drive folder.

Google Drive is the face of Google Clouds data storage system.

As we discovered earlier, all internet data is stored in a SSD (solid state device) in a data centre. With so much important information stored in data centres, the security needed to protect your data is very important.

The video to the right, shows the layers of security at one of Google's Data centres in The United States of America.

Could this be where your E-Folio is stored?

What is WIFI?

With most people now accessing the internet using WIFI it is an impressive technological advancement in the history of the internet.

Quest 2 Activity 2:

WIFI

Research the invention of WIFI and located where in the world it was invented. In your Digi-Quest Jornal complete the wifi research case study.