PCNSA · Question #180
During the packet flow process, which two processes are performed in application identification? (Choose two.)
The correct answer is A. pattern based application identification B. application override policy match. During application identification, the firewall performs pattern-based recognition of applications and also checks for any application override policy matches.
Question
During the packet flow process, which two processes are performed in application identification? (Choose two.)
Options
- Apattern based application identification
- Bapplication override policy match
- Csession application identified
- Dapplication changed from content inspection
How the community answered
(34 responses)- A91% (31)
- C3% (1)
- D6% (2)
Why each option
During application identification, the firewall performs pattern-based recognition of applications and also checks for any application override policy matches.
Pattern-based application identification is a primary method where the firewall uses signatures and heuristics to recognize applications by analyzing packet headers and payloads against known patterns. This is a fundamental step in determining the application.
An application override policy allows an administrator to explicitly define an application based on port and protocol, ensuring the firewall identifies that traffic as the specified application regardless of its default signature, and this check occurs early in the application identification process.
''Session application identified'' is the outcome or state after the identification process is complete, not a process performed during identification.
While an application's identification might be refined or changed later based on content inspection, this phrasing describes a potential re-evaluation rather than a primary process within the initial application identification phase alongside pattern matching or override.
Concept tested: Palo Alto Application identification process
Source: https://docs.paloaltonetworks.com/pan-os/10-2/pan-os-admin/app-id/app-id-overview
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