PCNSE PCNSE Firewall Technology and Architecture

Question 1

Which Palo Alto Networks firewall component is responsible for identifying applications regardless of port or protocol?

Accepted Answer

App-ID

Answer

App-ID uses multiple classification mechanisms including application signatures, protocol decoding, and behavioral analysis to identify applications independent of port or protocol.

Question 2

In a Palo Alto Networks firewall, what is the purpose of the Security Policy Optimizer?

Accepted Answer

To migrate legacy rules to App-ID based rules

Answer

Security Policy Optimizer identifies port-based rules and helps migrate them to application-based rules to improve security posture.

Question 3

What happens to traffic matching a Security policy rule with action 'drop' versus 'deny' on a Palo Alto Networks firewall?

Accepted Answer

Drop silently discards without TCP RST; deny sends a TCP RST to the client

Answer

The 'drop' action silently discards packets while 'deny' sends a TCP RST or ICMP unreachable to notify the sender.

Question 4

Which zone type on a Palo Alto Networks firewall is used to inspect traffic that originates and terminates on the firewall itself?

Accepted Answer

Loopback zone

Answer

The loopback zone handles traffic that originates or terminates on the firewall itself, such as management services hosted on the device.

Question 5

What is the function of the Palo Alto Networks 'Commit' operation in relation to the candidate configuration?

Accepted Answer

It validates and activates the candidate configuration replacing the running configuration

Answer

A commit validates the candidate configuration for errors and then activates it, making it the new running configuration.

PCNSE Exam Practice Test

PCNSE Exam Practice Test

PCNSE PCNSE Firewall Technology and Architecture