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1. There are _________ types of computer virus.
a) 5
b) 7
c) 10
d) 12
View Answer
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. Which of the following is not a type of virus?
a) Boot sector
b) Polymorphic
c) Multipartite
d) Trojans
View Answer
Answer: 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. A computer ________ is a malicious code which self-replicates by copying itself to other
programs.
a) program
b) virus
c) application
d) worm
View Answer
Answer: 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. Which of them is not an ideal way of spreading the virus?
a) Infected website
b) Emails
c) Official Antivirus CDs
d) USBs
View Answer
Answer: 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. In which year Apple II virus came into existence?
a) 1979
b) 1980
c) 1981
d) 1982
View Answer
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.
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
View Answer
Answer: 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. The virus hides itself from getting detected by ______ different ways.
a) 2
b) 3
c) 4
d) 5
View Answer
Answer: 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.
8. _______________ 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
View Answer
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.
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
View Answer
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.
10. Direct Action Virus is also known as ___________
a) Non-resident virus
b) Boot Sector Virus
c) Polymorphic Virus
d) Multipartite Virus
View Answer
Answer: 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.
