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Showing posts with the label Computer online training

Electronic Mail " E-Mail"

Introduction of E-Mail E-Mail is also known as electronic mail . It is equivalent of sending a letter though the mail.Primary component of the Electronic Mail system is a post office , it is an area on the shared hard disk that is reserved for mail. This post office serves as the central message holder and has both "in" and "out" baskets for each user . To send a message a link is established between the sender's  "out "basket and the addressee's "in" basket. The method for receiving mail depends on the sophistication of the system. When multitasking personal computers and workstation are used, mail can be delivered to users while they are working  on something else .Otherwise users have to interrogate their mailboxes (diskspace) in a central system or  file server. 👉   Communication network  is the backbone of electronic mail that connect remote terminals to a central system or a local area network that interconnec...

ANTI-VIRUS

                                                   ANTIVIRUS SOFTWARE Anti Virus is a software utility that detects,prevents and removes viruses, worms, and other malware from a computer. Most anti-virus programs include an auto-update features that permits the program to download profiles for new viruses,enabling the system to check for new threats. Antivirus programs are essential utilities for any computer but the choice of which one is very important. One AV program might find a certain   virus or worm while another cannot or vice-versa. Anti-Virus software is also known as an anti virus program or a vaccine. Anti-virus software searches the hard drive and external media attached to a computer for any potential viruses or worms. Broadly speaking, the two main approaches to virus detection are: Dictionary Approach...