An administrator is receiving complaints about application performance degradation. After checking the ACC, the administrator observes that there is an excessive amount of VoIP traffic. Which three…

A QoS policy is used to apply the defined QoS classes and ensure that specific applications, such as VoIP, receive preferential treatment by assigning them to a higher priority class or guaranteeing bandwidth. Configuring a QoS policy for each relevant application ensures granular control.

An Application Override policy is used to force traffic to be identified as a specific application, typically when the default application identification is incorrect or needs to be bypassed, not directly for managing excessive VoIP traffic performance.

A QoS profile is fundamental for defining traffic classes, which categorize different types of network traffic (e.g., VoIP, video, data) based on criteria like DSCP values, applications, or IP addresses, allowing them to be treated differently according to their service requirements.

While some QoS mechanisms can be applied on ingress, the most effective place for traffic shaping and prioritization to prevent downstream congestion and manage bandwidth for different traffic types is typically on the egress interface, closest to the potential bottleneck.

QoS shaping and policing are most effective when applied on the egress interface, where the firewall can manage the traffic before it leaves the device, preventing congestion and ensuring that prioritized traffic is sent out first.