Every computer connected to our network and the internet has an IP (internet protocol) address. These addresses are similar to your house’s postcode in that it’s the address where a computer can be found on a network (internet or a home/private network, such as a company intranet). On their own they’re a bit confusing. You…
In a general sense, it’s what tells your computer that www.a_website_address.com is attached to an IP address, so that you can get to it by typing www.a_website_address.com in your web browser instead of the IP address itself. You can live a long time without knowing anything about DNS and, in a perfect world, that’s how…
The routing on a computer network makes sure that information gets to the correct destination. Routing works like this: Nearby computers are grouped together in a Local Area Network (LAN), in a group called a subnet. All machines on the same subnet know of all other machines on the subnet and hence can communicate. This…
Voice over Internet Protocol (Voice over IP, VoIP) is any of a family of methodologies, communication protocols, and transmission technologies for delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the internet. Other terms frequently encountered and often used synonymously with VoIP are IP telephony, internet telephony, voice over broadband…
This is best explained by comparing mobile phone handsets and wifi, which operate on different frequencies. Depending on the network provider, the power dissipated by the radio of a mobile phone is no more than 2 watts (O2 and Vodafone) or 1 watt (Orange). Now consider that the legal limit for wireless networking is 0.1w.…
There has been some discussion as to the possible hazards of wifi. This is best explained by comparing to mobile phone handset and Wifi, which operate on different frequencies. The power dissipated by the radio of a mobile phone is no more than 2 watts (e.g. O2 and Vodafone) and no more than 1 watt…
If you have followed the instructions below, click here to consult to our comprehensive online help. Broadband 1. Get the box that your provider will have given to you and make sure it is plugged into the mains. 2. Connect the box to your computer using a piece of cat 5 cable. 3. Restart your…