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    Information Technology A Definition:

    We use the term information technology or IT to refer to an entire industry. In actuality,

    information technology is the use of computers and software to manage information. In somecompanies, this is referred to as Management Information Services (or MIS) or simply as

    Information Services (or IS). The information technology department of a large company

    would be responsible for storing information, protecting information, processing the

    information, transmitting the information as necessary, and later retrieving information as

    necessary.

    History of Information Technology:

    In relative terms, it wasn't long ago that the Information Technology department might have

    consisted of a single Computer Operator, who might be storing data on magnetic tape, and

    then putting it in a box down in the basement somewhere. The history of information

    technology is fascinating! Check out thesehistory of information technologyresources for

    information on everything from the history of IT to electronics inventions and even the top 10

    IT bugs.

    Some advantages of information technology

    Globalization - IT has not only brought the world closer together, but it has allowed the world's

    economy to become a single interdependent system. This means that we can not only shareinformation quickly and efficiently, but we can also bring down barriers of linguistic and geographic

    boundaries. The world has developed into a global village due to the help of information technology

    allowing countries like Chile and Japan who are not only separated by distance but also by language

    to shares ideas and information with each other.

    Communication - With the help of information technology, communication has also become

    cheaper, quicker, and more efficient. We can now communicate with anyone around the globe by

    simply text messaging them or sending them an email for an almost instantaneous response. The

    internet has also opened up face to face direct communication from different parts of the world

    thanks to the helps of video conferencing.

    Cost effectiveness - Information technology has helped to computerize the business process thus

    streamlining businesses to make them extremely cost effective money making machines. This in turn

    increases productivity which ultimately gives rise to profits that means better pay and less strenuous

    working conditions.

    http://jobsearchtech.about.com/od/historyoftechindustry/tp/history_information_technology.htmhttp://jobsearchtech.about.com/od/historyoftechindustry/tp/history_information_technology.htmhttp://jobsearchtech.about.com/od/historyoftechindustry/tp/history_information_technology.htmhttp://jobsearchtech.about.com/od/historyoftechindustry/tp/history_information_technology.htm
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    Bridging the cultural gap - Information technology has helped to bridge the cultural gap by helping

    people from different cultures to communicate with one another, and allow for the exchange of

    views and ideas, thus increasing awareness and reducing prejudice.

    More time - IT has made it possible for businesses to be open 24 x7 all over the globe. This means

    that a business can be open anytime anywhere, making purchases from different countries easier

    and more convenient. It also means that you can have your goods delivered right to your doorstep

    with having to move a single muscle.

    Creation of new jobs - Probably the best advantage of information technology is the creation of new

    and interesting jobs. Computer programmers, Systems analyzers, Hardware and Software

    developers and Web designers are just some of the many new employment opportunities created

    with the help of IT.

    Some disadvantages of information technology

    Unemployment - While information technology may have streamlined the business process it has

    also crated job redundancies, downsizing and outsourcing. This means that a lot of lower and middle

    level jobs have been done away with causing more people to become unemployed.

    Privacy - Though information technology may have made communication quicker, easier and moreconvenient, it has also bought along privacy issues. From cell phone signal interceptions to email

    hacking, people are now worried about their once private information becoming public knowledge.

    Lack of job security - Industry experts believe that the internet has made job security a big issue as

    since technology keeps on changing with each day. This means that one has to be in a constant

    learning mode, if he or she wishes for their job to be secure.

    Dominant culture - While information technology may have made the world a global village, it has

    also contributed to one culture dominating another weaker one. For example it is now argued that

    US influences how most young teenagers all over the world now act, dress and behave. Languages

    too have become overshadowed, with English becoming the primary mode of communication for

    business and everything else.

    I found this, hope it work. Some advantages and disadvantages of information technology Before

    we can know about all the advantages and disadvantages of information technology, it is

    essential that we know what information technology is exactly, and why it has it come to play

    such a important role in our daily lives. Today information technology involves more than just

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    computer literacy; it also takes into account how computers work and how these computers can

    further be used not just for information processing but also for communications and problem

    solving tasks as well. Our world today has changed a great deal with the aid of information

    technology. Things that were once done manually or by hand have now become computerized

    operating systems, which simply require a single click of a mouse to get a task completed. With

    the aid of IT we are not only able to stream line our business processes but we are also able toget constant information in 'real time' that is up to the minute and up to date. The significance of

    IT can be seen from the fact that it has penetrated almost every aspect of our daily lives from

    business to leisure and even society. Today personal PCs, cell phones, fax machines, pagers,

    email and internet have all not only become an integral part of our very culture but also play an

    essential role in our day to day activities. With such a wide scope for the purpose of this article

    we shall focus on the impact of the internet in information technology. Some of the advantages of

    information technology include: Globalization - IT has not only brought the world closer together,

    but it has allowed the world's economy to become a single interdependent system. This means

    that we can not only share information quickly and efficiently, but we can also bring down barriers

    of linguistic and geographic boundaries. The world has developed into a global village due to the

    help of information technology allowing countries like Chile and Japan who are not onlyseparated by distance but also by language to shares ideas and information with each other.

    Communication - With the help of information technology, communication has also become

    cheaper, quicker, and more efficient. We can now communicate with anyone around the globe by

    simply text messaging them or sending them an email for an almost instantaneous response.

    The internet has also opened up face to face direct communication from different parts of the

    world thanks to the helps of video conferencing. Cost effectiveness - Information technology has

    helped to computerize the business process thus streamlining businesses to make them

    extremely cost effective money making machines. This in turn increases productivity which

    ultimately gives rise to profits that means better pay and less strenuous working conditions.

    Bridging the cultural gap - Information technology has helped to bridge the cultural gap by

    helping people from different cultures to communicate with one another, and allow for the

    exchange of views and ideas, thus increasing awareness and reducing prejudice. More time - IT

    has made it possible for businesses to be open 24 x7 all over the globe. This means that a

    business can be open anytime anywhere, making purchases from different countries easier and

    more convenient. It also means that you can have your goods delivered right to your doorstep

    with having to move a single muscle. Creation of new jobs - Probably the best advantage of

    information technology is the creation of new and interesting jobs. Computer programmers,

    Systems analyzers, Hardware and Software developers and Web designers are just some of the

    many new employment opportunities created with the help of IT. Some disadvantages of

    information technology include: Unemployment - While information technology may have

    streamlined the business process it has also crated job redundancies, downsizing andoutsourcing. This means that a lot of lower and middle level jobs have been done away with

    causing more people to become unemployed. Privacy - Though information technology may

    have made communication quicker, easier and more convenient, it has also bought along privacy

    issues. From cell phone signal interceptions to email hacking, people are now worried about their

    once private information becoming public knowledge. Lack of job security - Industry experts

    believe that the internet has made job security a big issue as since technology keeps on

    changing with each day. This means that one has to be in a constant learning mode, if he or she

    wishes for their job to be secure. Dominant culture - While information technology may have

    made the world a global village, it has also contributed to one culture dominating another weaker

    one. For example it is now argued that US influences how most young teenagers all over the

    world now act, dress and behave. Languages too have become overshadowed, with Englishbecoming the primary mode of communication for business and everything else.

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    Information Technology Pros

    1. The world got flexibility

    What we think, do or plan must be shared with our co-workers, colleagues and friends. The internet

    technology has advanced this system to a great extent. The telephone idea (by Alexander Graham

    Bell) has been modified and made as Cell Phones to increase more flexibility in communication and

    talk to our dear fellows whenever we require!

    2. The sense of responsibility has increased

    Let us take Barack Obama- USA President as the figure. With the use of networking sites (Twitter

    and Facebook), blogs, social bookmarking, the leader can approach to the world whenever necessary

    and we can receive the news and updates which he has done (or wants to be done by us) within a

    very short period.

    3. Easy thinking & evolution in transportation

    To think and to research, we need resources to find what our past people has thought, what quotes

    they have left for us (+information + theory). We can find them by a single click in search engines

    (specially Google, Yahoo!). By getting a clear cut idea, we get the chance of contributing the world

    with new technological ideas and inventions and share what we have learnt throughout our lives.

    And throughout the ages, it helped us to evolute the transportation strategy which helps us to visit

    from a place to another by (Roads, highways, air, water and in the skies!)

    4. Saves thousand of lives daily

    So, by the point heading I hope you understand I am referring towards Medical Sector development.

    Each day people are getting relief by the perfect use of Medicine, Hospital Technology with addition

    of (X-Rays, Laser Treatments) and more on the queue. By the combination of the World Health

    Organization, various fatal diseases can be overcome and just expelled from specified countries by

    quick plans and ideas.

    5. Increase the sense of Human Rights

    The technology can remind of our human rights, basic needs and give updates where relief or

    worldwide help is necessary. During earthquakes, terrible floods, while co-operation is necessary theWorld Wide Web can help us to collect the donation by a desired amount.

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    It is not possible to just figure out everything about the good and bad sides of Information and

    Technology within a page and article as because it has mixed with every aspects and corners of our

    lives. Rather, let us look at the side effects, bad sides (cons) which IT-sectors have brought to the

    Human Society.

    Information Technology Cons

    1. It has taken away peoples Privacy

    As IT-Sectors have wined the peoples heart worldwide. People are here to share and store any kind

    of information, private date in their hard drives and private online databases. But due to some

    Cyber-Criminals, nothing is SO Safe both online and offline. If someone becomes a bit careless, s/he

    may needs to pay high for it. (Its serious).

    2. The online community is not safe for Family anymore

    Children under age may often share Cell Numbers, Private Email Address which can be hacked by

    people and can pass it to the criminals who have a blue-print to harm the society. And people are

    loosing credit card privacy and other payment processing options. Again, there are some sites

    created by Nasty Guys, which can lead under eighteen teenagers to a different pathThat Is Going

    To Bring Harms To The Nation.

    3. It is going to damage a Humans Natural Power

    We can think, gather human principles (ethical knowledge) and make co-operative relationships

    between friends and families. But due to harmful aspects of (IT) people are becoming fully

    technological based. And it can bring huge damage to the society as its taking away the natural

    thoughts and organic ideas.

    4. It can bring World Destruction without Efficient Administration

    This is an extra point which I am writing by remembering various Science Fictions. Great scholars

    have though about the matter wisely. Til now, we (humans) are possessing the leading place in the

    world and administering the computer technology. But a day MAY come when the technology is

    going to administer us in all aspects. It may probably happen that we are converted to the slaves of

    Technology.

    So, by this cons I am not trying to tell that Technology is here to bring harms only, because I myself is

    a technological man who passes 24 hours browsing computer and talking on phones. But as a part of

    human society we need to give up a look at the both sides of IT.

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    THE ADVANTAGE OF USING IP

    IP enables cross-platform, or heterogeneous, networking. For example, a Windows NT/2000

    network could contain Unix and Macintosh workstations or even networks mixed in it. TCP/IP also

    has the following characteristics:

    Good failure recovery

    The ability to add networks without interrupting existing services

    High error-rate handling

    Platform independence

    Low data overhead

    Because IP was originally designed for Department of Defenserelated purposes, what we now call

    features or characteristics were actually design requirements. The idea behind "Good Failure

    Recovery" was that if a portion of the network were disabled during an incursion or attack, its

    remaining pieces would still be able to function fully. Likewise is the capability of adding entire

    networks without any disruption to the services already in place. The ability to handle high error

    rates was built in so that if a packet of information got lost using one route, there would be a

    mechanism in place to ensure that it would reach its destination using another route. Platform

    independence means that the networks and clients can be Windows, Unix, Macintosh, or any other

    platform or combination thereof. The reason IP is so efficient lies in its low overhead. Performance is

    key for any network. IP is unmatched in its speed and simplicity.

    Disadvantage of Internet Protocol

    1. SYN Attacks

    The Internet Protocol uses a three-way handshake system. Under this system the user contacts a

    server, which then sends a response back to the user asking the user to confirm the connection. The

    computer hosting the connection must then wait 75 seconds to receive a response to the

    acknowledgment, to compensate for network slowdown. SYN attacks work by sending the first

    request but not the second over and over again. This monopolizes the computer's resources, causing

    other legitimate connections to fail.

    2. SEQUENCE MANIPULATION

    The Internet Protocol keeps packets of information in sequence. If a user goes offline, either by a

    malicious user's designs or other means, any computers it is currently communicating with will close

    the connection if a response without the proper sequence number is received. If a user intercepts

    these messages he can discern the ID number and respond as the user, resulting in communication

    with the machine being hijacked. This can cause theft of important data.

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    3. AMORPHOUS IDENTIFICATION

    The Internet Protocol was designed to only allow a single connection at a time and to have this

    connection be routed to a definite user. As the Internet has progressed and IP address space

    becomes increasingly precious, this address space is no longer dedicated and is usually assigned

    among a pool of users. This lack of unique identification makes it hard to verify a user and adds to

    the complexity of an application's security by removing trust in the identity of the user.

    4. DNS FLAWS

    The Domain Name Service (DNS) is a way of looking up the IP address of a domain name. Internet

    Protocol can only communicate to IP addresses, requiring Internet communication to occur through

    a DNS server maintained by your Internet Service Provider. This flaw can be exploited by redirecting

    domain names to different IP addresses.

    Pros and Cons

    There are many pros and cons to using cookies. Some sites use them for security, to

    make sure that a user is who they say they are. Some sites have also been accused of

    using cookies to track users on the web, in a way which may invade a user's privacy.

    Many e-commerce sites use cookies in order to customize the way their site looks when

    a user goes to it. Amazon.com, for instance, uses cookies to track a user in order to give

    them recommendations, to keep track of a shopper's cart, and also to enable their "1-

    Click" shopping.(8) Amazon.com's system keeps a record of a user's credit card

    information, associated with the identification number on their cookie. This means thatwhen the user returns to buy something, there is no need to send their credit card

    information over the Internet, potentially preventing the risk of having that information

    fall into the wrong hands (9). Many other sites use a similar system to display ads or

    news that are specifically tailored for the individual visitor.

    Some sites have introductory pages, which are displayed for first time users, so that the

    user understands what the site is about. However, it would be frustrating if every time a

    visitor goes to a site they have to click through all the introductions. Cookies provide a

    way around this. After a user has been through the introductory pages, a site can send a

    cookie to the computer that says that the user has been there. The next time the user

    arrives at the page, the site knows that they have been through the introduction, and so itcan just pass them on to the site directly. This displays how cookies can be useful for

    website developers and users alike (10).

    Cookies also help provide security for information exchanges. For instance, some

    websites will use cookies to prevent an attack such as Session Hijacking, when an

    attacker gets in between a user and a site, and assumes the identity of the user. Cookies

    provide a site with a way to make sure that the computer that it's talking to is the same

    computer it was talking to a minute ago. Overall, however, one of the most persistent

    ways cookies are used are to provide login information for a user.

    For instance, Yahoo! uses and optional cookie so that when a user who goes to the site

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    often visits the site, it "remembers" who they are, and gets the cookie information to log

    them in and display their own customized page. This saves the user a little bit of time

    and effort, and makes the site a more pleasant experience (11).

    Advertisers are also some of the largest users of cookies. Companies like Doubleclick

    use cookies to find out what users are interested in. For instance, if one goes to a lot ofsites that involve travel to London, after a while, Doubleclick can customize the ads he

    or she sees, and may present one for a site that sells airline tickets, or discount luggage.

    The real-world equivalent of this is shopping catalogues, which often sell information

    about people who order things from them. If a consumer buys a lot of clothing from mail

    order catalogues, chances are after a while he or she will start receiving more and more

    catalogues to look at, because he or she have been put on a list of people who are

    interested in clothing catalogues.

    There are, however, many security concerns associated with cookies. One of the

    shortfalls of cookies is that they are dependent on the computer on which they are

    placed. Just because that computer is visiting a site again, doesn't mean it is the sameuser. This means that, in theory, if one uses a computer to visit a site which uses a cookie

    to identify him or her, and then he or she walks away from that computer and someone

    else visits the same site, they could get information that is actually meant for the original

    user (12)

    Another problem is one of privacy. Many users like the internet for its anonymity. The

    idea that an individual or organization could actually be tracking where they are going

    and what sites they are visiting really bothers some users. The fact that some of this

    tracking information could be used for the purpose of making money, by targeting

    advertising for instance, also concerns some users. There have also been incidents where

    government websites are found to be using cookies. Although these cookies may not be

    used to track visitors, the fact that the government could use this method to track users,

    concerns many privacy activists (13).

    Another concern is the fact that, not only are the web-servers keeping track of which

    sites are visited, but so is the computer that the cookies are placed on. On a computer

    with a cookie-enabled web browser, the browser creates a text file that keeps track of

    cookies. This means that if one wanted to see what sites someone had been to on his

    computer he could theoretically take a look at this file and get an idea. This is similar to

    the information that is kept by the browser's history list, but in the case of cookies, the

    file also may contain information like usernames, passwords, identification numbers, andeven credit card information (although it is considered extremely bad form for internet

    designers to use cookies for credit cards) (14).

    Cookie security is a large problem. The concern is that many security holes have been

    found in different with browsers. Some of these holes were so serious that they allowed

    malicious webmasters to gain access to users' email, different passwords, and credit card

    information. The worry is that, even though past holes have been patched, there could be

    more holes out there (15).

    Some also have concerns about the whole system of cookies in the first place. The

    general though is that cookies could become accessible to a website which did not issuethem. This would mean, in theory, that a malicious web site designer would be able to

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    collect not only the information which is in the cookie he gives the user, but also the

    information in all of the cookies on the user's computer. While this may only be theory,

    it is still very worrisome to many privacy advocates.

    Many users don't even know that cookies exist because they aren't something that the

    user really sees. The fact that the general public is not aware of this "threat" to theirprivacy is also a large concern for people in privacy groups. Because cookies are passed

    back and forth without ever asking the user for permission, the user is never really made

    aware of their existence. It is also important to note that it is possible to refuse cookies,

    but the default settings for almost all web browsers allows them with no questions asked.

    There are also some e-commerce sites that will not allow a user to buy something

    without first turning cookies "on." (16)

    Another privacy concern is the fact that some companies have figured out ways to

    connect the anonymous clicks of a user to actual personal information which they have

    collected. The legality of this kind of action is still being debated, which will be

    discussed later. In the case of Doubleclick, the Electronic Privacy Information Centerhas filed a complaint against them alleging that they are infringing on a user's right to

    privacy because of their plans to match up identification numbers found in cookies with

    names and personal information of the user (17).

    It is not just advertisers that worry privacy activists, but also researchers. The

    information in and gathered from cookies may be used to do research on controversial

    issues such as abortion and gun control. Information could be used to gather information

    which will be used by special interest groups without the knowledge of the user (18).

    Although there are more pros and cons involved with this issue, these above mentionedissues are at the heart of the matter. Many web site designers use cookies in ways that

    benefit the user, perhaps saving the user some time or frustration. But there are also real

    dangers involved in the use of cookies which make them a concern among privacy and

    internet activists.