What is used to protect network from outside internet access?(a) A trusted antivirus(b) 24 hours scanning for virus(c) Firewall to separate trusted and untrusted network(d) Deny users access to websites which can potentially cause security leakI have been asked this question during an interview for a job.My enquiry is from Security in division Security of Operating System

What is used to protect network from outside internet access?(a) A tru

1.	What is used to protect network from outside internet access?(a) A trusted antivirus(b) 24 hours scanning for virus(c) Firewall to separate trusted and untrusted network(d) Deny users access to websites which can potentially cause security leakI have been asked this question during an interview for a job.My enquiry is from Security in division Security of Operating System
Answer» Right ANSWER is (c) Firewall to separate trusted and untrusted NETWORK To explain: Firewall create a protective barrier to secure INTERNAL network. An antivirus can only detect harmful viruses but cannot stop ILLEGAL access by remote attacker.

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