Virus

1. There are _________ types of computer virus.
a) 5
b) 7
c) 10
d) 12

2. Which of the following is not a type of virus?
a) Boot sector
b) Polymorphic
c) Multipartite
d) Trojans

3. A computer ________ is a malicious code which self-replicates by copying itself to other programs.
a) program
b) virus
c) application
d) worm

4. Which of them is not an ideal way of spreading the virus?
a) Infected website
b) Emails
c) Official Antivirus CDs
d) USBs

5. In which year Apple II virus came into existence?
a) 1979
b) 1980
c) 1981
d) 1982

6. 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

7. _______________ 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

8. The virus hides itself from getting detected by ______ different ways.
a) 2
b) 3
c) 4
d) 5

9. ________________ 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

10. Direct Action Virus is also known as ___________
a) Non-resident virus
b) Boot Sector Virus
c) Polymorphic Virus
d) Multipartite Virus





Answers
1) 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)d
Explanation: Types of viruses 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. Trojan does not come under types of virus.

3)b
Explanation: A computer virus is a malicious code which self-replicates by copying itself to other programs. The computer virus gets spread by itself into other executable code or documents. The intention of creating a virus is to infect vulnerable systems

4) c
Explanation: The ideal means of spreading computer virus are through emails, USB drives that are used portable and injected and ejected in different systems as well as from infected websites. Antivirus selling vendors do not place a virus in their CDs and DVDs

5)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

6)b
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.

7)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.

8) b
Explanation: The virus hides itself from getting detected by 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

9)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.

10)a
Explanation: Direct Action Virus is also known as a non-resident virus which gets installed & stays hidden in your computer’s memory. Such type of virus stays involved to the specific type of files which it infects