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PCNSE · Question #100

People are having intermittent quality issues during a live meeting via web application.

The correct answer is C. Use QoS Profile to define QoS Classes and a QoS Policy. To improve live meeting quality using QoS, a QoS Profile is used to define QoS Classes, which are then applied to specific traffic via a QoS Policy.

Submitted by chen.hong· Apr 18, 2026Deploy and Configure

Question

People are having intermittent quality issues during a live meeting via web application.

Options

  • AUse QoS profile to define QoS Classes
  • BUse QoS Classes to define QoS Profile
  • CUse QoS Profile to define QoS Classes and a QoS Policy
  • DUse QoS Classes to define QoS Profile and a QoS Policy

How the community answered

(27 responses)
  • A
    4% (1)
  • B
    11% (3)
  • C
    81% (22)
  • D
    4% (1)

Why each option

To improve live meeting quality using QoS, a QoS Profile is used to define QoS Classes, which are then applied to specific traffic via a QoS Policy.

AUse QoS profile to define QoS Classes

This option is incomplete; while QoS profiles define classes, a separate QoS Policy is also required to *apply* these classes to actual traffic flows.

BUse QoS Classes to define QoS Profile

This reverses the correct workflow; QoS Profiles are used to define QoS Classes, not the other way around.

CUse QoS Profile to define QoS Classes and a QoS PolicyCorrect

In Palo Alto Networks, a QoS Profile defines various QoS Classes to prioritize different traffic types, and a QoS Policy is then created to classify specific application traffic, such as live meeting web applications, into these defined classes for appropriate quality of service application.

DUse QoS Classes to define QoS Profile and a QoS Policy

This option reverses the correct workflow; QoS Profiles define QoS Classes, and then QoS Policies apply those classifications, not the inverse.

Concept tested: QoS configuration workflow (Profile, Class, Policy)

Source: https://docs.paloaltonetworks.com/pan-os/10-2/pan-os-admin/quality-of-service/qos-overview

Topics

#QoS#Traffic Prioritization#QoS Profiles#QoS Policies

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