What does a firewall do?, Monitors traffic, Deletes viruses, Cleans disk space, How does a firewall filter data?, It detects suspicious files, It encrypts the data, It uses 2 factor authentication, What is IP blocking in firewalls, it blocks unknown IP addresses, it deletes IP addresses, it hides IP addresses, What is a whitelist?, a list of approved sites, a list of blocked sites, a list of hacking sites, What is a blacklist?, a list of approved sites, a list of blocked sites, a list of hacking sites, Can a firewall stop attacks?, Yes it blocks unauthorised access, No it only monitors traffic.

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