Question : ________ changes each time it is installed to avoid detection by antivirus software.
Option 1: Polymorphic virus
Option 2: Worm
Option 3: Logic bomb
Option 4: Trojan horse
Correct Answer: Polymorphic virus
Solution : The correct answer is Polymorphic virus.
To prevent detection by antivirus software, polymorphic viruses vary each time they are installed. This is accomplished by encrypting its code and employing different encryption keys each time. This makes detecting and removing polymorphic malware challenging for antivirus software. Polymorphic viruses are malware that is intended to be difficult to detect and eradicate.
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Question : Select the option that expresses the given sentence in passive voice.
Myra installed the new software on her computer.
Option 1: The new software had installed Myra on her computer.
Option 2: The new software is installed by Myra on her computer.
Option 3: The new software were install by Myra on her computer.
Option 4: The new software was installed by Myra on her computer.
Question : Which mechanism is used by the computer virus 'worm' to duplicate itself?
Option 1: Swap
Option 2: Increment
Option 3: Spawn
Option 4: Swarm
Question : Silk is obtained from:
Option 1: Mulberry tree
Option 2: Saliva of the silk worm
Option 3: Larvae of silk worm
Option 4: Cocoon of silk worm
Question : Polio is caused by
Option 1: Bacteria
Option 2: Virus
Option 3: Fungus
Option 4: Protozoa
Question : Leptospirosis is a disease caused by
Option 1: Virus
Option 2: Fungus
Option 3: Protozoa
Option 4: None
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