E. Answer these questions.
1. What do you understand by the term malware?
2. What is a computer virus and how does it spread?
3. What are the symptoms of a computer virus?
4. Why is a polymorphic virus difficult to detect?
5. What are Trojan horses and worms?
6. What is an antivirus? Name some antivirus programs.
Answers
Answer:
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Explanation:
1. ans Malware is intrusive software that is designed to damage and destroy computers and computer systems.
2ans . Viruses spread when the software or documents they get attacheda to are transferred from one computer to another using a network, a disk, file sharing methods, or through infected e-mail attachments.
3. ◆Slow computer performance.
◆Erratic computer behavior.
◆Unexplained data loss.
◆Frequent computer crashes.
4. Polymorphic viruses rely on mutation engines to alter their decryption routines every time they infect a machine. ... The use of complex mutation engines that generate billions of decryption routines make them even more difficult to detect.
5. worm is similar to a virus by its design, and is considered to be a sub-class of a virus. Worms spread from computer to computer, but unlike a virus, it has the capability to travel without any help from a person. ... A Trojan horse is not a virus. It is a destructive program that looks as a genuine application.
6.
AVG AntiVirus and Avast are quite similar when it comes to free antivirus programs. They offer same level of protection along with similar features. AVG free version will protect you against most of the malware threats and alongside you will also get email and link protection.