What Are Anti-Virus Softwares????....

Antivirus software (alternate spelling anti-virus) mainly prevent and remove computer viruses, including worms and trojan horses. Such programs may also detect and remove adware, spyware, and other forms of malware.

A variety of strategies are typically employed. Signatures involve searching for known malicious patterns in executable code. However, signatures can only be updated as viruses are created; users can be infected in the time it takes to create and distribute a signature. To counter such zero-day viruses, heuristics may be used to essentially guess if the file is truly malicious. Generic signatures look for known malicious code and use wild cards to identify variants of a single virus. An antivirus may also emulate a program in a sandbox, monitoring for malicious behavior. Success depends on striking a balance between false positive and false negatives. False positives can be as destructive as false negatives. In one case a faulty virus signature issued by Symantec mistakenly removed essential operating system files, leaving thousands of PCs unable to boot.

Royal College

Royal College is one of the foremost schools in Sri Lanka. Established in 1835, it has stood around for more than 175 years or excellence.

The history of this wonderful school can be found here.