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Management Information Systems

Notes
Example: Daytona Beach, Florida is served by a fixed wireless network that provides a
broadband connection to anyone who is interested in the service. The local government of rural
Owensboro, Kentucky, wanted to keep the town’s businesses competitive. Since other options
were not available it built a fixed wireless network that provides broadband links to the internet
for $25 per month.

6.7.6 Fiber to the Premises

Fiber to the premises connects a building to the internet via optical fiber. The service is widely
available in the United States and other countries, but at varying speeds. In Hong Kong and
South Korea, the maximum speed the providers of this service allow is 100 Mbps. In the United
States, Verizon provides the service, which it call FiOS (Fiber Optic Service), but limits the speed
to 30 Mbps. While Verizon had deployed the service on a large scale, other companies such as
AT&T provide similar service to some communities. When the optical fiber reaches the
subscriber’s living or work space, it is referred to as Fiber to the Home (FTTH). Subscribers
simply connect their computer or LAN’s router to the optical fiber socket in the wall. In some
communities, Verizon has also provided television programming on the same optical lines.

6.7.7 Optical Carrier

Companies willing to pay high fees can enjoy very high connection speeds. These services are
denoted with OC, the acronym for optical carrier, because they are provided through optical
fiber lines. The number next to OC refers to data speed in multiples of 51.84 Mbps, considered
the base rate bandwidth. Thus, when available, the services are denoted as C-1, C-3, C-9, C-12,
C-18, C-48, and so on through C-3072. For illustration, OC-768 enables you to transmit the
content of seven CDs in a second. Typical businesses that purchase the services are ISPs provides
of search engines, and businesses that wish to support content-rich websites and high volume
traffic. However media companies have also purchased such services because the high speeds
support streaming video. Among companies that use OC-768, for instance are Deutsche Telecom,
NBC, Disney, the U.S. Department of Defense Advance Research Projects Agency, NASA, and
Nippon TV.

Some of the internet services are:
1. E-mail
2. Archie

3. Finger
4. Usenet and Mailing list
5. WWW

Task Discuss symmetric DSL.
1. E-mail: Electronic Mail is a method of sending message from a user at a computer to a
recipient on another computer.
An e-mail message consists of a header and the body of the message The first part, the
header, contains the information about where the message has to be sent, and the path that
has followed to reach its destination, as well as other information like date, return path,
etc. The body is the actual message that is being sent.

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