HTTP

As studied earlier, HTTP stands for Hypertext Transfer Protocol. HTTP is a standard set of well-defined rules which are used for communication on a network between a Web Server and a Web Client, using a Web browser. HTTP is used to deliver files and data on the World Wide Web (WWW). In the last update, we have discussed “File Transfer […]

FILE TRANSFER PROTOCOL (FTP)

FTP or File Transfer Protocol is a method for transferring files from one computer to another over a network. Based on the rights of a user account, it allows users to send files from their PCs as well as download files from the FTP server. You can access an FTP server by typing ftp://ftp server address in your web browser […]

REMOTE LOGIN

Remote login is an Internet Utility that lets you work on a computer located far ways by logging on to it. Remote Login is employed for exploring also as for performing on the remote systems. Using Remote Login, you can your computer to log on to a computer in a different city or country and do all work just as if you have the computer before […]

MULTI-POINT VIDEO CONFERENCING

Video Conferencing allows more than two participants at different places to communicate with each other by speaking and seeing each other as if they were sitting together. All participants have a video camera, microphone, and speakers at their end. The important factor for video conferencing is the speed of the Internet connectivity. The higher the speed, the lesser will be […]

VIDEO CONFERENCING

In Net Telephony, we can only talk to others and cannot see them. With video conferencing, users can speak and see each other as well. We need a PC with Internet access for video conferencing, a digital camera that is correctly installed and connected to the PC, and video conferencing applications like Microsoft Net-Meeting. The Input device, camera, and microphone […]

More on Internet Services

We have studied about the Internet, know its advantages and have also covered some of the Internet-based services such as e-mail, search engines and chatting.In this chapter, we will study some of the popular Internet-based services. Let us start with Net Telephony. In the last update, we have discussed “Software and Its parts”. If you didn’t check updates on my […]

ANTIVIRUS SOFTWARE

Antivirus software is software used to detect and remove computer viruses from a computer. This is an application program that needs to be updated regularly to be able to detect and remove new viruses. This software has to be purchased separately and is not part of the Operating System software. The update files are available on the computer website. Form […]

PREVENTING A VIRUS ATTACK

We must take precautions for preventing computers from getting infected with viruses. Some of the viruses are so destructive that they can erase data collected over years within seconds. Users connected to a network must take strict preventive measures as virus infection spreads very fast on networks. Some of the measures which need to be followed for preventing PCs from […]

HOW DO VIRUSES SPREAD

Computer viruses mostly infect the computers by booting, executing, and opening an infected program or file. Computer viruses spread their infection or malicious program code by using storage devices as a medium or through networks. For example, form a floppy disc to hard disc and vice-versa, CD to hard disc and vice-versa, through Internet, e-mail attachments, and through LAN and […]

COMMON TYPES OF VIRUSES

Computer viruses are of the three common types – Worm, Trojan, and Bomb. Let us study these virus types. Worm: Worm is a virus that spreads by using e-mail. They look in the e-mail address book of a user and send themselves to all the addresses stored therein to infect them as well. Worm is normally found n networks than […]