Multiple choice general knowledge science & technology

Which among this is a Free FIREWALL?

  1. Zone Alarm Pro

  2. Comodo Firewall

  3. Hit-Fire

  4. Threat fire
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Comodo Firewall is a well-known free firewall software for Windows. Zone Alarm Pro is a paid commercial product (though a free version exists), while Hit-Fire and Threat fire are not recognized firewall products.

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