q)What is Internet? Explain its advantages an disadvantages.
ans:-
Internet is a web of networks i.e. interconnection of large number of computers throughout the world. The computers are connected (wired or wireless via satellite) in such a way that anybody from anywhere can access anything/ information. It is the largest network in the world just like a communication service provided by different companies. It is not limited in a room or a building or just an office. But by just sitting on a chair in one corner we can access the information, we can go for meeting or conference or shopping etc. while accessing the information from remote computers, it seems that a user is retrieving information from inside the cpu/hard disk. It does not take more time to fetch the information. While getting the data/packets, all the computers use a common rule called protocol (TCP/IP). Without this, even a single computer can not communicate. The Internet can be considered as a super highway with multi lanes and with high traffic of data without letting it jam.
Internet, which stands for “International Network” was coined first time by Arpanet as well as DARPAnet, lead by scientist Dr. J.C.R. Licklider a U.S. Department of Defense project to create a nationwide computer network that would continue to function in 1962 AD. Later on gradual development went on by other different scientists. Firstly, it was tested to share research papers by different scientist and from different location throughout the universities but later (about two decades) different other organizations used for multi tasks.
Uses/advantages of Internet:-
It has many advantages and can not be mentioned by just writing here. But to know how it works and where it is used, let’s see some.
File sharing/transferring:-
A file can be put on a "Shared Location" or onto a File Server for instant use by colleagues does not matter what is a size of file and how many will use it. Mirror servers and peer-to-peer networks can be used to ease the load of data transfer.
Internet banking:-
We know that almost all banks now-a-days are using this technology for its customers as an extra facility. Internet Banking/ Online Banking allows bank customers to do financial transactions on a website operated by the banks. The customers can do almost any kind of transaction on the secured websites. They can check their account balance, transfer funds, pay bills, etc. but security is a major issue for this.
Relay of information/communication:-
The biggest advantage of that internet is offering of information. The internet and the World Wide Web has made it easy for anyone to access information, and it can be of any type, as the internet is a sea of information. The internet and the World Wide Web have made it easy for anyone to access information, and it can be of any type. Any kind of information on any topic is available on the Internet. As well as, it can be greatly used for communication purpose for any distance.
Dating/Personals:
People are connecting with others through internet and finding their life partners. Internet not only helps to find the right person but also to continue the relationship.
disadvantages:-
Theft of Personal Information
If you use the Internet for online banking, social networking or other services, you may risk a theft to your personal information such as name, address, credit card number etc. Unscrupulous people can access this information through unsecured connections or by planting software and then use your personal details for their benefit. Needless to say, this may land you in serious trouble.
Spamming
Spamming refers to sending unwanted emails in bulk, which provide no purpose and needlessly obstruct the entire system. Such illegal activities can be very frustrating for you as it makes your Internet slower and less reliable.
Virus Threat:
Internet users are often plagued by virus attacks on their systems. Virus programs are inconspicuous and may get activated if you click a seemingly harmless link. Computers connected to Internet are very prone to targeted virus attacks and may end up crashing.
Pornography
Pornography is perhaps the biggest disadvantage of Internet. Internet allows you to access and download millions of pornographic photos, videos and other X-rated stuff. Such unrestricted access to porn can be detrimental for children and teenagers. It can even play havoc in marital and social lives of adults.
Social Disconnect
Thanks to Internet, people now only meet on social networks. More and more people are getting engulfed in virtual world and drifting apart from their friends and family. Even children prefer to play online games rather than going out and mingling with other kids. This may hamper a healthy social development in children.
Privacy:
There are many websites which we visit very frequently. In some sites we enter our personal information. This entry lets our privacy to be public which should not be. Mainly in social sites; it has been a great problem for all viewers or companies or customers. We know that the privacy should be confidential which they are not able to maintain.
