How Anti-Virus Software Works
Anti-virus software works in two modes: stand-alone and memory resident. In stand-alone mode the software works like any other program. You start it and point it at a file, directory or disk to check the files for viruses.
If any viruses are found the software can:
- Delete: simply delete the files from your system
- Isolate: hide the file from the rest of the computer so that it cannot be run
- Fix: remove the virus from the file and restore it to its original state
The actions that are available depend on the type of infection. In memory-resident mode the anti-virus software stays running on your system at all times. Whenever a file is used the software will check it for viruses. As well as checking files, most anti-virus software will also check e-mails and web pages.
This would be a good time to complete your logbook for this topic. You can download and install an anti-virus software product, or carry out a comparative review of several products, based on information from the vendors' websites. Check with your tutor to find out exactly what to do.
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