Question

There are ______ types of firewall.

(a) 5

(b) 4

(c) 3

(d) 2

I had been asked this question in a job interview.

Query is from Firewalls in section Cyber Security of Cyber Security

Answer 1

Right option is (b) 4

Easiest explanation: There are four types of firewall based on their working and characteristics. These are Packet Filtering Firewalls, Circuit Level Gateway Firewalls, Application level Gateway Firewalls, and Stateful Multilayer Inspection Firewalls.