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Question
Which one of the following is true about firewalls?
It filters network traffic
It can be either a hardware or software device
It follows a set of rules
All of these
None of these
ANSWER : 4
Descrption
Firewalls are filters network traffic which follows a set of rules and can either be used as hardware or software device. They are often categorized as network or host - based firewalls. Network firewall filter traffic between two or more networks while host networks run on host computers. Firewall is a network security system designed to prevent unauthorized access to or from private network. Network firewalls are used to prevent unauthorized internet users from accessing the private network especially intranets.
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