300-415 Question 169
Single answerAn organization is using Cisco SD-WAN and wants to ensure that voice traffic is prioritized over file transfers during network congestion. Which type of policy should be configured to achieve this requirement?
- A
Data policy
- B
Control policy
- C
App-aware routing policy
- D
QoS policy
Show answer and explanation
Correct answer: D
Explanation
To prioritize voice traffic over file transfers during congestion, a QoS (Quality of Service) policy should be implemented. QoS policies allow administrators to classify traffic types and assign priority levels, ensuring that latency-sensitive traffic like voice is given precedence over less time-sensitive traffic during network congestion. Other policy types, such as data and control policies, are not intended for this specific use case.
- A. Incorrect.
Data policies are used to control data traffic flow, such as forwarding traffic through specific paths or applying NAT. They are not specifically designed for prioritizing traffic based on application types during congestion.
- B. Incorrect.
Control policies are used for influencing routing decisions by modifying route advertisements between sites. They do not handle traffic prioritization based on application types.
- C. Incorrect.
App-aware routing policies are used to dynamically select the best path for specific applications based on performance metrics such as latency, jitter, and loss. However, they do not directly manage prioritization during network congestion.
- D. Correct.
QoS policies are designed to prioritize traffic by marking, queuing, and scheduling traffic based on its type. This is the correct choice for ensuring voice traffic is prioritized over file transfers during congestion.