Multiple choice

Which of the following is installed to protect the system from hacker intrusions?

  1. Yahoo Messenger

  2. Firewall

  3. Mass mailer

  4. Script

  5. None of the above

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Yes it correct. Firewall is a software or hardware based network security system that controls the incoming and outgoing network traffic by analysing the data packets and determining whether they should be allowed through or not.