Which of the following is used to prevent unauthorized access to a network?

  1. Spyware
  2. Firewall
  3. Worm
  4. Virus
Answer

B) Firewall

A firewall filters incoming and outgoing traffic according to security rules. The others are malware. SLO CS-11-A-04 · Knowledge

Computer Science MCQ · More Unit 1: Computer Systems MCQs · Practise