(1) The document discusses networks and how they allow computers to connect and share resources like files and printers. (2) As computers got faster, older technologies like modems and parallel ports were too slow for data transfer. (3) Networks solved this issue by allowing multiple computers to connect and share resources at higher speeds than serial or parallel ports, such as Ethernet networks that can support speeds up to 10 megabits per second.

1. Essay about networks
Improving Network Performance
Nowadays, it seems that everyone has a computer and is discovering that communication
technologies are necessary. E–mail, Internet, and file transferring has become a part of the modern
world. Networks allow people to connect their computers together and to share resources. They allow
people to communicate and interact with each other. The days of the lone PC are diminishing.
At the same time, computers are getting faster than ever. The most powerful PC five years ago
couldn't be sold for half of its original price today. This poses some problems to the consumer.New
technologies can't be driven by older technology. As innovations continue to be invented, the
computer of yesterday is fast outpaced by the...show more content...
Modems, a popular communications device, typically have throughput rates from 9600 baud (See
Glossary) to 28800 baud. Modems use an RS232 or serial port connection.
One solution to this transmission speed is the parallel or Centronics port. This port transmits eight
bits at a time instead of one with a serial port, which is how they got their names. Because it sends
eight bits at a time, a parallel port can achieve transfer rates of up to 40,000 bits or 5000 characters
a second (Seyer 64). Parallel ports are commonly used to connect to printers and external storage
devices.
The main problem with modems and parallel ports is that only two computers can be connected at
one time. Networks were invented to solve this. They allowed a group of computers to
communicate and to share resources such as hard disk space and printers. Different types of
networks have different throughput rates, but all are higher than either serial or parallel ports. The
type of network used at Banks High School is an Ethernet network with software from Novell. This
network has the capability of supporting transfer rates up to ten megabits per second (Bennett 1).
Although this seems like a lot, remember that all of the computers on the network are using this
connection at the same time and each computer has to share with every other computer. There are a
few ways to speed up a slow Ethernet network, however. Splitting the responsibility from one server
to many is one way, and using more than one
Get more content on HelpWriting.net

2. Carbon Essay
CARBON
Carbon, an element discovered before history itself, is one of the most abundant elements in the
universe. It can be found in the sun, the stars, comets, and the atmospheres of most planets. There
are close to ten million known carbon compounds, many thousands of which are vital to the basis of
life itself (WWW 1).
Carbon occurs in many forms in nature. One of its purest forms is diamond. Diamond is the hardest
substance known on earth. Although diamonds found in nature are colorless and transparent, when
combined with other elements its color can range from pastels to black. Diamond is a poor conductor
of heat and electricity. Until 1955 the only sources of diamond were found in deposits of volcanic
origin. Since then...show more content...
Carbon dioxide is a colorless, almost odorless gas that is formed by the combustion of carbon. It
is a product that results from respiration in most living organisms and is used by plants as a source
of carbon. Frozen carbon dioxide, known as dry ice, is used as a refrigerant. Fluorocarbons, such as
Freon, are used as refrigerants (Kinoshita 225–226).
Organic compounds are those compounds that occur in nature. The simplest organic compounds
consist of only carbon and hydrogen, the hydrocarbons. The state of matter for organic
compounds depends on how many carbons are contained in it. If a compound has up to four carbons
it is a gas, if it has up to 20 carbons it is a liquid, and if it has more than 20 carbons it is a solid
(Kinoshita 230–237).
The carbon cycle is the system of biological and chemical processes that make carbon available to
living things for use in tissue building and energy release (Kinoshita 242). All living cells are
composed of proteins consisting of carbon, hydrogen, oxygen, and nitrogen in various combinations,
and each living organism puts these elements together according to its own genetic code. To do this
the organism must have these available in special compounds built around carbon. Only plants
produce these special compounds, by the process of photosynthesis. Photosynthesis is a process in
which chlorophyll traps and uses energy from the sun in the form of light. Six molecules of carbon
dioxide combine with six molecules of water to
Get more content on HelpWriting.net