Chapter 7
- 1. Networks, Telecommunications, and Mobile Technology NETWORKS AND TELECOMMUNICATIONS Network Basics Local area network (LAN) Designed to connect a group of computers in close proximity Office building, home, or school Wide area network (WAN) Spans a large geographic area State, province, or country Metropolitan Area Network (MAN) Large computer network Usually spanning a city Using Networks and Telecommunications for Business Advantages Voice over IP (VoIP) Uses technology to transmits voice calls over long- distance telephone lines Networking businesses Virtual private network (VPN) is a way to use the public telecommunication infrastructure to provide secure access to an organization’s network Value-added network (VAN) is a private network, provided by a third party
- 2. Increasing the speed of business Bandwidth is the difference between highest and lowest frequencies Securing business networks Proper identification of users Control/Secure access Protection of data integrity Mobile Technology Wireless local area network (wLan) Uses radio waves rather than wires to transmit information across a local area network Cellular phones and pagers Provide connectivity for portable and mobile applications, both personal and business Cordless computer peripherals Connect wirelessly to a computer, such as a cordless mouse, keyboard, or printer Satellite television Allows viewers in almost any location to select from hundreds of channels WiMax wireless broadband Enables wireless networks to extend as far as 30 miles and transfer information, voice, and video at faster speeds than cable.
- 3. Security sensor Alerts customers to break-ins and errant pop files Using Satellite Technologies in business Location-based services (LBS) Wireless mobile content services that provide location specific information Privacy concerns o Target marketing o Embarrassment o Harassment o Service denial o Legal restrictions Geographic Information System (GIS) Designed to work with information that can be shown on a map Uses o Finding what is nearby o Routing information o Information alerts o Mapping densities o Mapping quantities Global Positioning System (GPS)
- 4. A constellation of 24 well space satellites that orbit the earth Makes it possible for people to pinpoint their geographic location with a ground receiver