Virus and Anti Virus – This book covers the entire syllabus of “Computer & Information Technology” prescribed by the BNMC for B.Sc. in Nursing Science & Diploma in Nursing Science & Midwifery students. We tried to accommodate the latest information and topics.
This book is an examination setup according to the teachers’ lectures and examination questions. We hope in touch with the book students’ knowledge will be upgraded and flourished. The unique way of presentation may make your reading of the book a pleasurable experience.
Virus and Anti Virus
Definition of Computer Virus:
A computer virus, much like a flu virus, is designed to spread from host to host and has the ability to replicate itself. Similarly, in the same way that viruses cannot reproduce without a host cell, computer viruses cannot reproduce and spread without programming such as a file or document.
Example:
Famous computer viruses
- I LOVE YOU
- Blaster
- Melissa
Definition of Anti-Virus:
Antivirus software is a class of program designed to prevent, detect and remove malware infections on individual computing devices, networks and IT systems.
Example:
- Windows antivirus software
- Avira (Windows, Mac)
- Bitdefender (Windows)
- Avast (Windows, Mac)
- AVG (Windows, Mac)
- Lavasoft Ad-Aware Free (Windows)
- eScan Anti-Virus Toolkit (Windows)
- Trend Micro HouseCall (Windows, Mac)
Difference between Computer Virus & Anti-Virus Software:
| Computer Virus | Anti-Virus Software: |
| A virus is a computer program. These are series of instructions that are written for the computer to perform specific tasks. | An antivirus is more of computer software, which is a collection of programs that provide instructions to the computer telling it on what to do or how to do it. |
| A virus can benefit the spreader of the virus or the programmer who used it | While an antivirus is beneficial to the people who got infected by the virus. |
| A virus can now be easily uploaded or copied on the web | while antivirus software is hard to find and cost more money |
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