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A wide area network is a telecommunications network that extends over a large geographical area for the primary purpose of computer networking. Wide area networks are often established with leased telecommunication circuits.   Advantages of a wide area network (WAN) Covers large geographical area: ... Centralized data: ... Get updated files and data: ... A lot of application to exchange messages: ... Sharing of software and resources: ... Global business: ... High bandwidth: ... Distribute workload and decrease travel charges Disadvantages Of WAN Technology -Setting up a network can be an expensive and complicated experience. The bigger the network the more expensive it is. -Security is a real issue when many different people have the ability to use information from other computers. Protection against hackers and viruses adds more complexity and expense. -Once set up, maintaining a network is a full-time job which requires network supervisors and technicians to be employed. -Informatio

A  Metropolitan Area Network  is a class of network which serves a large geographical area between 5 to 50 kilometers in range. This geographical area can include several buildings, such as a college campus, sometimes referred to as a  campus network , or an area as large as a city (metropolitan area).   Advantages  of a  metropolitan area network  ( MAN ) Less expensive: It is less expensive to attach  MAN  with WAN. ... Sending  local  emails: ... High speed than WAN: ... Sharing of the internet: ... Conversion from LAN to  MAN  is easy: ... High Security: ... Difficult to manage: ... Internet speed difference: Disadvantages of MAN Network Difficult To Manage: It is very difficult to manage if the size and number of LANs  network  increase. ... Internet Speed Difference: As it cannot work on phone copper wires. ... Hackers Attack: ... Technical Staff Requires to Set up: ... Need More wires:

A local area network is a computer network that interconnects computers within a limited area such as a residence, school, laboratory, university campus or office building. By contrast, a wide area network not only covers a larger geographic distance, but also generally involves leased telecommunication circuits Local Area Network Advantages Comprising a group of computers and/or mobile devices joined to a server, a  local area network  ( LAN ) helps businesses, schools and other organizations conduct daily operations. ... Compared to a wide  area network , a  LAN  connection is relatively inexpensive to set up and maintain. Disadvantages of LAN . High Setup Cost: The initial setup costs of installing  Local Area Networks  is high because there is special software required to make a server. Also, communication devices like an ethernet cable, switches, hubs, routers, cables are costly.

How satellites work. A satellite is basically a self-contained communications system with the ability to receive  signals  from Earth and to retransmit those  signals  back with the use of a transponder—an integrated receiver and transmitter of  radio signals .

Bluetooth .  Bluetooth  is a type of  wireless communication  used to transmit voice and data at high speeds using radio waves. It is a standard protocol for short-range radio  communications  between many different types of devices, including mobile phones, computers, entertainment systems and other electronics.