Protective Measures

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  • Q1

    A malicious program that causes damage to the data and files on a system is known as

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    Answer:

    computer virus.

    Explanation:
    Computer viruses are small programs or scripts that can negatively affect your computer. These malicious little programs can create files, move files, erase files and cause your computer not to function correctly. Some viruses can duplicate themselves, attach themselves to programs and travel across networks.
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  • Q2

    Firewall protects a server and individual PC from

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    Answer:

    virus.

    Explanation:
    Firewall protects a server, a network and individual PCs from attacks by viruses and hackers. It also protects the resources of a private network from users of other networks.
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  • Q3

    A virus that is often disguised as a useful computer program is known as a

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    Answer:

    trojan horse.

    Explanation:
    A trojan horse is a program that appears harmless but actually performs malicious functions such as deleting or damaging files.
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  • Q4

    Computer viruses are

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    Answer:

    malicious code.

    Explanation:
    Computer viruses are malicious codes that cause damage to the data and files on systems. Viruses can attack any part of a computer’s software such as boot block, operating system, files etc.
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  • Q5

    The attack which finishes all resources of a computer and stops all applications is related to

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    Answer:

    denial of services.

    Explanation:
    Denial of services eats up all the resources of a system and the system or the applications come to a halt. Example of such an attack is flooding a system with the junk mail.
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