8. Summary

Hardware needed

The key device is the modem. This sends and receives internet traffic.

A firewall is used to avoid malware from being downloaded or to block unwanted site from being accessed. A firewall can be software or hardware.


The most important application for Internet access is the web browser


A search engine allows you to retreive the most relevant web pages given a set of key words

An Internet Service Provider provides an internet connection


Connection technology

Although analogue technology is still in use in the form of dial-up modem, by far the most common method is to use a broadband ADSL connection. An alternative is to use Wi-Fi radio based system that at some point is connected to a wi-fi enabled router.


Challenge see if you can find out one extra fact on this topic that we haven't already told you

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