Wiley_CPAexcel Exam Review 2015 Focus Notes_Business Environment and Concepts

Networks
In a computer network, computers are connected to one another to enable sharing of peripheral
devices, sharing data and programs stored on a file server, and communicating with one another.
Networks allow various user departments to share information files maintained in databases.
Databases should:
Provide departments with information that is appropriate
Prevent access to inappropriate information
A company may create its own value-added network or VAN.
A local area network (LAN) is used when computers are physically near to one another
A wide area network (WAN) uses high-speed, long-distance communications networks
or satellites to connect computers that are not near to one another
Cloud computing is the use and access of multiple server-based computational resources via a
digital network (WAN, Internet connection using the World Wide Web, etc.)
Focus on
Information Technology—Module 41 30