200-301: Cisco Certified Network AssociateDemo

Question

What is the role of a firewall in an enterprise network?

A determines which packets are allowed to cross from unsecured to secured networks
B processes unauthorized packets and allows passage to less secure segments of the network
C forwards packets based on stateless packet inspection
D explicitly denies all packets from entering an administrative domain

Explanation

A firewall enforces security policy between network segments by inspecting traffic and allowing or blocking packets according to configured rules. Its purpose is to control which traffic can pass between less trusted and more trusted networks, rather than forwarding traffic generically or denying all traffic unconditionally.

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Cisco: What Is a Firewall?

200-301: Cisco Certified Network AssociateDemo

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Notes

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