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Computer and Network Security

1 UPSC Prelims MCQs tagged "Computer and Network Security". Free practice with answer keys, explanations, and timed mock tests on Anantam IAS.

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  1. What does a “Firewall” do?

    What does a "Firewall" do?

    1. ARemoves viruses from the computer.
    2. BFilters data coming and going in the network.
    3. CCreates backups of data.
    4. DAutomatically encrypts all files.
    Answer and explanation

    Correct answer: B

    A firewall monitors and filters incoming and outgoing network traffic against a set of security rules, acting as a barrier between a trusted internal network and untrusted external ones. Removing viruses is the job of antivirus software, while backups and encryption are separate functions.

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    Science & Technology UPSC GPSC-2026 Easy