 An electrical device that sends or receives radio or television signals through electromagnetic waves.

 An open wireless protocol for exchanging data over short distances from fixed and mobile devices

 A portable telephone that connects with the telephone network over radio wave transmission. Mobile phones connect to transmission towers which supply specific small areas and connect signals from this area to the transmission tower in the area containing the receiving telephone

 Dynamic Host Configuration Protocol controls how a client joins a network. In a model situation, the client sends a request for the appropriate networking information to the server of the network, and is sent back these details along with an IP address.

 a public area where customers can access the Internet using wireless local area networks (WLAN). Hotspots exist in public areas where Wi-Fi connections are available. Hotspots are becoming more popular in places like cafes and airports.

 (Hypertext Transfer Protocol over Secure Socket Layer, or HTTP over SSL): a Web protocol built into browsers that encrypts and decrypts user page requests as well as the pages that are returned by the Web server. This is a protocol for the server software that provides "secure" transactions on the World Wide Web.

 An ISP, or Internet Service Provider, is a company or organization that has the equipment and telecommunication line access to provide connectivity to the Internet for customers

 An Internet Protocol (IP) address is a numerical identification and logical address that is assigned to devices participating in a computer network. An IP address consists of four parts, and is a completely unique identification number throughout the Internet.

 In a network, a MAC address is a unique serial number burned into hardware adapters, giving the adapter a unique identification. This serial number is a 12 digit hexadecimal number.

 A modem is a device that encodes digital computer signals into analog/analogue telephone signals and vice versa and allows computers to communicate over a phone line

 A radio channel is the passing of digital signals as electromagnetic waves sent over long distances.

 A radio channel is the process where signals are passed on through electromagnetic waves that are invisible.

 Most software, such as Hotmail, comes with filters that help to minimise spam. Users can set these to different levels, the highest level which would refuse all s unless they are sent by known users. Whilst this may be effective, it can obviously block important s from new contacts. At a lower level of protection, spam filters spot whether the is likely to be spam but this does not ensure that no spam is let through. Rough. The biggest danger is when spam s arrive with a virus attachment.

 SSID is an acronym for Service Set Identifier. The SSID is a sequence of up to 32 letters or numbers that is the ID, or name, of a wireless local area network

 A hardware device which connects devices on separate ports to each other in order to allow for the communication of data.

 A USB hub is a device that allows many USB devices to be connected to a single USB port on a host computer or another hub.

 Anti-virus software (alternate spelling anti-virus) mainly prevent and remove computer viruses, including worms and Trojan horses.

 Web Conferencing is used to conduct live meeting or presentations over the internet. This is conducted by utilizing a direct link between one or more computers and allowing video, audio, and collaboration between users.

 A Virtual Learning Environment, or VLE, is software designed to enhance a students ability to learn online, by providing tools similar to those which are available in the classroom and facilitating easy distance learning.

 Wi-Fi is a trademark of the Wi-Fi Alliance for certified products based on the IEEE standards. This certification warrants interoperability between different wireless devices.

 A wireless technology similar to that of Wi-Fi, but with a linger range. As it is not Wi-Fi, it cannot be received by standard Wi-Fi receivers, needing either a converter to a Wi-Fi signal or a Wi-Max receiver

 Wired Equivalent Privacy/ Wi-Fi Protected Access (2) are algorithms that are used to secure wireless networks using encryption of data and requiring user authentication. WEP has become deprecated with the developments of WPA and WPA2