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Computer AwarenessEasyAsked in: RRB JE · CBT-2 (Civil), 22 Apr 2025, Shift 1

What is the primary function of a computer firewall?

  1. A.To speed up internet connectivity
  2. B.To prevent unauthorised access to a private network
  3. C.To detect and remove computer viruses
  4. D.To store user passwords securely

Correct answer

B. To prevent unauthorised access to a private network

Explanation

The correct answer is B, To prevent unauthorised access to a private network. A firewall stands between a trusted private network and an untrusted one such as the internet, and checks the data going in and out. Traffic that matches its security rules is allowed and the rest is blocked, much like a guard at a gate. It can be hardware, such as a separate device or a feature of a router, or software, such as the firewall built into Windows. The name comes from the fire-resistant walls in buildings that stop a fire from spreading from one part to another. A is wrong because a firewall does not make the connection faster; checking traffic can even slow it slightly. C is wrong because finding and removing viruses is the job of antivirus software, which works on files already on a computer. D is wrong because storing passwords safely is the work of a password manager. Exam tip: firewall = gatekeeper of network traffic; antivirus = cleaner of infected files.

Practice Questions

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Q2.Computer AwarenessAsked in: CDS · CDS-I 2025, GKEasy

Which one of the following is the characteristic of Artificial Intelligence ?

  1. A.Replicates human decision making
  2. B.Stores relevant information
  3. C.Stores similar kind of data for a specific purpose
  4. D.Allows user to interact with media
Show answer
Correct answer: A. Replicates human decision making

Artificial Intelligence is the ability of a machine to perform tasks that normally need human intelligence, such as reasoning, learning and taking decisions.