Mobile Computing and Mobile Computing Security Essay

alert Computing and energetic Computing Security - Essay ExampleToday, a whole variety of fluid calculation platforms much(prenominal) as in-dash VGA displays and automobile computers which feature a variety of applications and functions such as global view systems (GPS) and radar detection systems atomic number 18 available for the mass market ( alert computing, 2006).Some mobile computing devices use WLAN (Wireless topical anesthetic Area Network) as their means to communicate and acquire data. A WLAN is a LAN (Local Area Network) connected through radio or other radio means. One of the advantages of using a WLAN is the flexibility it offers to overcome restrictions of physically connected networks to space restrictions. It is easy, wire-free and primary to use. WLAN allows data access without having to jack-in or plug to a wired network (Shriraghavan et al, 2003).Wireless Local Area Network (WLAN) transmits and receives data through fixed line network called access point s. An bea called a hotspot results from the area covered by each of the access points. Each access point serves many subscribers and they alter their access points as they transfer from one point to another. As the number of access points in a WLAN increases, the size of the network also increases (Shriraghavan et al, 2003).Satellite Networks This type of network uses communications satellites acting as central points for transferring data. The subscriber uses a satellite dish antenna and a transceiver to transmit and receive data. This network is normally a better alternative for rural areas where broadband, DSL (Digital Subscriber Line) and cable television systems are not ready to hand(predicate) (Shriraghavan et al, 2003).Cellular Networks The advent of mobile phones or cellular phones ushered in the creation of cellular networks. A cellular network operates by serving different frequencies or bands to handle calls and other services such as short message service (SMS). A cel l site is commonly composed of 3 grassroots parts a control unit, a receiver and a transmitter connected to a Mobile Telecommunications Center that is also interconnected with the public telephone systems (Shriraghavan et al, 2003).Ad-hoc and Sensor Networks An ad-hoc network results from the creation of several footling nodes or motes, tiny powered self-contained computers that are linked through radio around a small area. Motes are capable of communicating and exchanging data with each other over short distances and are usually formed temporarily. Ad hoc networks are common and have several practical military applications (Shriraghavan et al, 2003).Mobile Devices Mobile devices could include the following Laptop computers, Personal Digital Assistants (PDAs) and handheld PCs, Pagers and cellular phones and task devices, such as bar code scanners. Laptops, PDAs and man-portable handheld PCs are computing devices that can run a number of programs and applications for every sort of business, enterprise and more recently for the modern home. Laptops are basically portable versions of personal computers (PCs) which equal or even rival the computing power of modern desktop units. They are similarly supported by their manufacturers in the