Archive for the ‘Applications of IT’ Category
April 27th, 2010 | 
Author: The Hypertext Transfer Protocol (HTTP) is a protocol used mainly to access data on the World Wide Web. The protocol transfer data in the form of plain text, hypertext, audio, video, and so on. However, it is called the Hypertext Transfer Protocol because its efficiency allows its use in a hypertext environment where there are rapid jumps from one document to another. HTTP functions like a combination of FTP and SMTP. It is similar to FTP because it transfers files and uses the services of TCP. However, it is much simpler than FTP because it uses only one TCP connection. There is no separate control connection; only data are transferred between the client and the server.
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The network can use any set of address with registering with the internet authorities. Because the network is isolated, the addresses do not have to be unique. However, this strategy has a serious drawback is user might mistakenly confuse the address as part of the global internet.To overcome the problem associated with the first and second strategies, the internet authorities have reserved three sets of addresses. Any organization can use an address out of this set without permission from the internet authorities. Everybody knows that these reserved addresses are for private from the internetworks. They are unique inside the organization, but they are not unique globally. No router will forward a packet that has one of these addresses as the destination address.
Extranet is the same as the intranet with one of the major difference. Some resources may be accessed by specific group of user outside the organization under the control of the network administrator.A private network that uses the TCP/IP protocol suite must use IP addresses. Three choices are available:The network can apply for a set of addresses from the internet authorities and use them without being connected to the internet. This strategy has an advantage, if in the future the organization decides to be connected to the internet, it can do so with relative ease. However, there is also a disadvantage is the address space is wasted.
The idea of private networks- networks those are isolated from the internet but use the TCP/IP protocol suite. A private network is designed to be used inside organization. It allows access to share resources and, at the same time, provide privacy. The aspects of these networks are define commonly used related terms, intranet and extranet.Intranet is a private network (LANs) that uses the TCP/IP protocol suite. However, access to the network is limited only to the users inside the organization. The network uses application programs defined for the global internet, such as “hppt” and may have web servers, print servers, file servers, etc.
IMAP4-Another mail access protocol is internet mail access protocol, version 4. IMAP4 is similar to POP3, but it has more features, IMAP4 is more powerful and more complex.
IMAP4 provides the following extra functions:
A user can check the email header prior to downloading.
A user can create, delete, or remove mailboxes on the mail server.
A user can create a hierarchy of mailboxes in a folder for mail storage.
A user can download email. This is especially useful if bandwidth is limited and the email contains multimedia with high bandwidth requirements.
POP3- post office protocol, version 3 is simple, but it is limited in functionality. The client POP3 software is installed on the recipient computer, the server POP3 software is installed on the mail server. Mail access starts with the client when the user needs to download its email from the mailbox on the mail server. The client opens a connection with the server on TCP ports. It then sends its user name and password to access the mailbox. The user can then retrieve the mail message, one by one.POP3 has two modes: The delete mode and the keep mode. In the delete mode, the mail is deleted from the mailbox after retrieval. In the keep mode, the mail is remains in the mailbox after retrieval.
The first and second stages of mail delivery we use simple mail transfer protocol (SMTP). But in the third stage SMTP not involved because of push protocol. It pushes the message from the sender to the receiver even if the receiver does not want it. The operation of SMTP starts with the sender not receiver. On the other hand, the third stage needs a pull protocol. The operation must start with the recipient. The mail must stay in the mail server mailbox until the recipient retrieves it. The third stage uses a mail access protocol. Currently two mail access protocols are available: POP3 and IMAP4.
Every Organization uses the Information Technology in their business to perform all the roles directly or indirectly. Till date the development in IT, especially in communications, multimedia and electronic services have started creating more opportunities and new method to develop business. All the above things are contributing for the fresh and valuable ways of processing transactions in business environment, integrating businesses, payment transfers, and electronic deliveries.
We have a valid proof to tell the above things because technology has introduced things like internet trading, electronic fund transfers, smart cards, digital cash and many. We need a technology in commerce because such things will increase sales, achieve and exceed productivity, develop cost cutting, and give quality and satisfaction to the end user. It can also provide company a noteworthy competitive advantage.
Competitiveness:
E- Trading is very reliable and it gives us all necessary needs in this E world. We complete our entire daily activities automated. A 24\7 customer support can be provided with no question. This will provide a great customer satisfaction.
Security:
Advancement and Growth in Information Technologies in business give way to insecurity for the data in computers. Due to this factor, all over every organization follows some insecurity violation programs to avoid the unlawful access of the company’s information by not permitted persons. Availability, Confidentiality and availability are the three fundamental attributes of a common security program which is being followed by almost every organization but in different means.
Cost Benefits:
Rather than the man power, machine power got increased why it is often be followed by every business is because through IT, it has been proved that the cost involved in completing a work through internet is much lower when compared to man power. The role of human to create a product has been decreased because technology introduced may things which are adopted by every business.
Marketing:
Previously marketing was done through newspapers, advertisements, media and so on, but now marketing is done through websites and at a lower cost but in a very standard way and that too without any issues in strategy marketing through internet plays a major role.
The rising technology is consistently shifting the world around us. A considerable pressure is being face by the current education system which prepares the students to learn, live and work in the digital age. Technology is fetching a commanding tool for communication, problem solving and as a mean of investigate for learning in edification area. Information technology has helped beginners to develop problem solving analytical, research skills. The method of learning and the way processes were carried out have been affected through IT.
Electronic Learning:
E-learning or culturing through Information technology is quick fitting an immensely adaptable solution of providing learning with the tools essential to tackle needs of the learners in order to provide high-quality and standardized education. Learners can network with the e-learning software take pleasure in thrilling colorful presentation, play games and answer any common or uncommon questions while learning a great deal through private participation.
Many tools like HP virtual Class room, inspire, web CT, IBM lotus virtual classroom were available online as a product of IT education. Both Students and teachers can also gain significant profit by utilizing e-learning tools. E-learning is easily accessible around the clock, whether online or through special software. E-learning includes computer based training and web based training. Learners or students can log in from their home desk, Laptop or an institutional computer and by that they can enjoy their learning and watch a web cast with multiple students through live planning, puzzles and voice or video communication.
Virtual Classroom:
All the new techniques help hypnotize the student’s attention. This impression interactivity makes student to involve with software that reacts, instead of a book. By that, they can obtain timely response on their events, and that may be a interrogate answer or a demand for more data. Virtual learning can look for the databases for their ideas and of other students. They can also pay attention to pre-recorded auditory remarks to improve knowledge. Students can converse about their subjects or related projects with the tutor and the students through e-mail and discuss in groups.
Information Technology also has its own land mark in communication through mail, chat, phones, wireless networks, and satellite and through many infinite means. Printing is the first thing in information technology. Only printing made people literate by which education has improved from ten percent to eight percent. It has also provided raw materials for studying like books. Other harvest of information technology was the inventions like telegraphy, wireless; telephone, radio, television, broadcasting, computers and many are coming up. For the past years, computers and the sharing of data that facilitate has penetrated human life
As the world more and more moves in the direction of information culture, without computers we cannot even think about any development. Computer and its Literacy are essential in today’s life. Only those underscore the importance for creating a computer educated society. There had been out of this world invention in all field like information, storage and display devices and the electronic transport information on worldwide telecommunication networks, progressively more under the manage of the dispatcher and the recipient.
Nowadays Information also covers any voice in telephone, text in fax machines, and movement of images as in video and data which can be stored in computers, memory cards, and many means of storage products. The restriction for the broadcast and the welcome of data only from the device connected to the wires and consequently only from the respective positions, has been vividly overcome by our planet based cell phones, radio, televisions and now in satellites based global wide mobile system. The information technology also passes on to the invention, assembling, dealing out, storage and delivery of information and the process and products that makes all the imaginary things possibly. The 3 G facility that we have in our mobile is the best example. So we cannot even live without information technology and that to communication has groomed with the major help of information technology.
