Computer Virus and Antivirus MCQ Question
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The document presents a collection of multiple-choice questions related to computer viruses and antivirus concepts for competitive exams. It covers various types of viruses, their characteristics, methods of infection, and typical questions associated with computer security. Additionally, it provides explanations and answers to each question for better understanding.
![5. ____________ deletes all the files that it infects.
a) Non-resident virus b) Overwrite Virus
c) Polymorphic Virus d) Multipartite Virus
6. _____________ is also known as cavity virus.
a) Non-resident virus b) Overwrite Virus
c) Polymorphic Virus d) Space-filler Virus
7. What is “Trend Micro”?
1. It is anti-virus software 2. It is just a program
3. It is virus program 4. None of the above
8. What is the name of the viruses that fool a user into downloading and/or executing them by pretending
to be useful applications?
1. Cracker
2. Worm
3. Trojan horses
4. Keylogger
9. What is the first boot sector virus?
1. Brain
2. Mind
3. ELK cloner
4. None of the above.
10. What is the name of first computer virus?
1. The Famous
2. HARLIE
3. PARAM
4. Creeper
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Computer Virus and Antivirus MCQ Question
- 1. Virus and Antivirus Related Question for All Competitive Exams 1. There are _________ types of computer virus. a) 5 b) 7 c) 10 d) 12 Answer: c Explanation: There are a total of 10 types of virus. These are categorized based on their working and characteristics. These are System or Boot Sector Virus, Direct Action Virus, Resident Virus, Multipartite Virus, Polymorphic Virus, Overwrite Virus, Space-filler Virus, File infectors, Macro Virus, Rootkit virus. 2. A computer ________ is a malicious code which self-replicates by copying itself to other programs. a) program b) virus c) application d) worm Ans. b 3. In which year Apple II virus came into existence? a) 1979 b) 1980 c) 1981 d) 1982 Answer: c Explanation: In mid-1981, the 1st virus for Apple computers with the name Apple II came into existence. It was also called Elk Cloner, which resided in the boot sectors of a 3.3 floppy disk. 4. The virus hides itself from getting detected by ______ different ways. a) 2 b) 3 c) 4 d) 5 Answer: b Explanation: The virus hides itself from getting detected in three different ways. These are by encrypting itself, by altering the disk directory with additional virus bytes or it uses stealth algorithm to redirect disk data. 5. _______________ infects the master boot record and it is challenging and a complex task to remove this virus. a) Boot Sector Virus b) Polymorphic c) Multipartite d) Trojans Answer: a Explanation: Boot Sector Virus infects the master boot record & it is a challenging & a complex task to remove such virus. Mostly such virus spreads through removable devices.
- 2. 6. ________________ gets installed & stays hidden in your computer’s memory. It stays involved to the specific type of files which it infects. a) Boot Sector Virus b) Direct Action Virus c) Polymorphic Virus d) Multipartite Virus Answer: b Explanation: Direct Action Virus gets installed & stays hidden in your computer’s memory. Such type of virus stays involved to the specific type of files which it infects. 7. ______________ infects the executables as well as the boot sectors. a) Non-resident virus b) Boot Sector Virus c) Polymorphic Virus d) Multipartite Virus Answer: d Explanation: Multipartite Virus infects the executables as well as the boot sectors. It infects the computer or get into any system through multiple mediums and are hard to remove. 8. ______________ are difficult to identify as they keep on changing their type and signature. a) Non-resident virus b) Boot Sector Virus c) Polymorphic Virus d) Multipartite Virus Answer: c Explanation: Polymorphic Virus is difficult to identify as they keep on changing their type and signature. They’re not easily detectable by traditional antivirus. It usually changes the signature pattern whenever it replicates itself. 9. Which of the below-mentioned reasons do not satisfy the reason why people create a computer virus? a) Research purpose b) Pranks c) Identity theft d) Protection Answer: d Explanation: Computer virus is not created for protection. Virus writers may have other reasons like for research purpose, pranks, vandalism, financial gain, identity theft, and some other malicious purposes. 10. The virus that spread in application software is called as 1. Boot virus 2. Macro virus 3. File virus 4. Anti virus Ans. b 11. How does a Le-Hard virus come into existence? 1. Hardware 2. Software 3. FRIDAY 13 4. Command.Com Ans. 4
- 3. 12. What is the virus that spread in computer? 1. It is hardware 2. It is system software 3. It is a computer program 4. It is a windows tool Ans. 3 13. What kind of attempts is made by individuals to obtain confidential information from a person by falsifying their identity? 1. Computer viruses 2. Spyware scams 3. Phishing scams 4. None of the above Ans. 3 14. When does the time bomb occur? 1. During a particular logic and data 2. During a particular time 3. During a particular data or time 4. None of the above Ans. 3 15. Delayed payload of some viruses is also called as 1. Time 2. Bomb 3. Anti-virus 4. None of the above Ans. 2 16. The difference between a virus and a self-replicating program which is like a virus is that rather than creating copies of itself on only one system it propagate through computer network. What is the self replicating program called? 1. Keylogger 2. Cracker 3. Worm 4. All of the above Ans. 3 17. What is anti-virus? 1. It is a computer 2. It is a program code 3. It is a company name 4. It is an application Ans. 2 18. What is the software called that’s designed to exploit a computer user and is a broad term covering computer viruses, worms, Trojan, adware, etc.? A Malware B Spyware C Backdoors D Key-logger Ans. a
- 4. 19. Which of the following is a software that, once installed on your computer, tracks your internet browsing habits and sends you popups containing advertisements related to the sites and topics you’ve visited? A Adware B Spyware C Malware D Bots Ans. a 20. Which of the following is a program capable of continually replicating with little or no user intervention? A Worms B Trojan horses C Virus D none of these Ans. c 21. Which of the following is the type of software that has self-replicating software that causes damage to files and system? A Worms B Backdoors C Viruses D Trojan horses Ans. a 22. Antivirus software is an example of A a security utility B an operating system C An office suite D business software Ans. a 23 ….are often delivered to a PC through an email attachment & are often designed to do harm A E-mail messages B Portals C Spam D Viruses Ans. d 24 ….viruses are often transmitted by a floppy disk left in the floppy drive A Boot sector B Logic bomb C Trojan horse D Script Ans. a 25. What is the most common way to get a virus in your computer ‘s hard disk A By opening emails B By uploading pictures from mobile phones to the computer C By installing games from their CDROMS D None of the above Ans. a
- 5. 26. _______ is the part of malware such as worms or viruses which performs the malicious action; deleting data, sending spam or encrypting data. A Payload B Spamming C Exploits D Scams Ans. a 27. _________ is the action of recording the keys struck on a keyboard, typically covertly, so that the person using the keyboard is unaware that their actions are being monitored. A Keylogging B Spamming C Denial of service D Exploits Ans. a 28. The attack that focuses on capturing small packets from the network transmitted by other computers and reading the data content in search of any type of information is ____ A Eavesdropping B Exploits C Scams D Denial of service Ans. a 29. _________ are computer programs that are designed by attackers to gain root or administrative access to your computer. A Backdoors B Rootkits C Malware D Antiware Ans. b 30. What is the software called which when get downloaded on computer scans your hard drive for personal information and your internet browsing habits? A Spyware B Antiware C Backdoors D Malware Ans. a 31. Which of the following is a type of program that either pretends to have, or is described as having, a set of useful or desirable features but actually contains damaging code. A) Trojans B) Viruses C) Worm D) Adware E) Bots Ans. a
- 6. 32. Which of the following is harmful to the computer? a) Shareware b) antivirus c) virus d) freeware Ans. c 33. Computer Virus is simply meaning is ____ a) hardware component b) disease c) set of computer instructions or code d) type of bacteria Ans. c 34. Virus enter the computer when computer starts is _____ a) salami shaving b) macro c) file infector d) boot sector Ans. d 35. Computer anti virus program includes ____ example of a) Solomon Toolkit b) Nortron c) McAfee d) All of these Ans. d 36. Another name of computer virus is a) vaccine b) worm c) Trojan Horse d) DES Ans. a 37. When computer virus starts to impact the data, it is known as a) virus infection b) virus spreading c) data losing d) shutting down Ans. a 38. Another name for free computer software is a) encrypted software b) copy protected software c) Public domain software d) shareware Ans. c
- 7. 39. Which one is not a computer virus? a) Trojan horse b) logic bomb c) McAfee d) redlof Ans. c 40. What is a software program that has the ability to replicate itself and spread from one computer to another called? a) Computer virus b) Computer memory c) computer program d) Computer file Ans. a 41. Which of the following is the first PC virus detected on ARPANET in 1970s? a) Michelangelo virus b) Brain c) Creeper d) Carzy.A Ans. c 42. A computer virus can ____. a) damage data b) render the system slow c) copy without any knowledge onto floppies used in infected computer d) All the above Ans. d 43. Virus in computers is related to ___. a) dust particles b) hardware c) programs d) All of these Ans. c 44. If your file is infected by a virus and you are sending that infected file to your friend through e-mail, what happens to your friend’s computer? a) It will be infected by the virus b) It will not get affected by the virus c) My friend cannot receive the file through e-mail d) You cannot send file through e-mail Ans. a 45. How is a virus transmitted in a computer? a) Booting a PC from an infected medium b) Executing an infected program c) Opening an infected file d) All the above Ans. d
- 8. 46. Which type of virus infects .SCR, .SYS files? a) Program virus b) Boot virus c) Macro virus d) Creeper virus Ans. a 47. The viruses that change their appearance to avoid detection are called ___. a) MBR viruses b) DBR viruses c) Parasitic viruses d) Polymorphic viruses Ans. d 48. Acid rain, Trojan and Amoeba. A are examples of _____. a) program viruses b) boot viruses c) macro viruses d) All of these Ans. a 49. Which of the following is an example of a boot virus? a) Alien.298 b) Umbrella.3173 c) Devil.941 d) XM.Yohimbe.A Ans. c 50. In which of the following files can viruses be sent as email attachments? a) .exe, .corn b) .pif, .scr c) .vbs, .bat d) All of these Ans. d 51. Which of the following is used to detect and remove virus from a computer? a) Virus software b) Antivirus software c) Application software d) System software Ans. b 52. Which is the product of Symantec corporation? a) Nortron antivirus b) McAfee c) Avast antivirus d) Kaspersky antivirus Ans. a
- 9. 53. Which of the following areas does an antivirus check for a virus? a) boot records b) Programs c) All local hard drives d) All of these Ans. d 54. Which of the following is performed by an antivirus software on a virus infected file ? a) Repairs the infected file b) Deletes the infected file c) Quarantines the infected file d) All the above Ans. d 55. Which kind of virus attaches itself to the antivirus program? a) self modifying virus b) Stealth virus c) Boot sector virus d) Micro virus Ans. b 56. Which software was developed by Natalya Kasperskaya in 1997? a) Nortron antivirus b) Avast antivirus c) McAfee antivirus d) Kaspersky antivirus Ans. d 1. Which of the following is not a type of virus? a) Boot sector b) Polymorphic c) Multipartite d) Trojans 2. Which of them is not an ideal way of spreading the virus? a) Infected website b) Emails c) Official Antivirus CDs d) USBs 3. In mid-1981, the 1st virus for Apple computers with the name _________ came into existence. a) Apple I b) Apple II c) Apple III d) Apple Virus 4. Direct Action Virus is also known as ___________ a) Non-resident virus b) Boot Sector Virus c) Polymorphic Virus d) Multipartite Virus
- 10. 5. ____________ deletes all the files that it infects. a) Non-resident virus b) Overwrite Virus c) Polymorphic Virus d) Multipartite Virus 6. _____________ is also known as cavity virus. a) Non-resident virus b) Overwrite Virus c) Polymorphic Virus d) Space-filler Virus 7. What is “Trend Micro”? 1. It is anti-virus software 2. It is just a program 3. It is virus program 4. None of the above 8. What is the name of the viruses that fool a user into downloading and/or executing them by pretending to be useful applications? 1. Cracker 2. Worm 3. Trojan horses 4. Keylogger 9. What is the first boot sector virus? 1. Brain 2. Mind 3. ELK cloner 4. None of the above. 10. What is the name of first computer virus? 1. The Famous 2. HARLIE 3. PARAM 4. Creeper Click here for Answers Computer Best MCQ Book in Just Rs.29/- [7000+ Question in English] https://bharatskills.in/best-computer-mcq-book-for-competitive-exams/ Computer Best MCQ Book in Just Rs.25/- (2100+ Question in Hindi) https://bharatskills.in/computer-mcq-book-in-hindi-pdf/ HEETSON Telegram https://t.me/Heetson_Official WhatsApp Channel @heetsoniti