Networking hardware makes it possible for computers to pass data to one another, to create a computer network (see unit poster reverse). These networks can be connected together to make the internet. A standard system (known as ‘protocol’) is used for passing data between computers. Data is first broken into small ‘packets’. The packets are then passed from one router to another until they reach the recipient.
Computers connected to the internet can provide many different services, such as serving web pages, dealing with email, responding to test packets of data (‘pings’), or converting server names (like www.bbc.co.uk) into internet protocol (IP) addresses.
Understanding the internet at this level empowers users to use this technology safely and responsibly, through recognising that the internet is not always secure and that traffic can be monitored and filtered.
Step 1 - Physical and wireless connections
Step 2 - Passing messages across networks
Step 3 - Testing network connections
Step 4 - Getting from here to there
Step 5 - From names to numbers
Step 6 - Implications for safety
Badges available for this unit