300-420 Question 153
Single answerAn enterprise organization is designing a WAN connectivity solution to support its on-premises data center, hybrid cloud architecture, and multiple branch offices. The organization requires high availability, cost efficiency, and the ability to dynamically prioritize application traffic. Which WAN connectivity solution would best meet these requirements?
- A
MPLS (Multiprotocol Label Switching)
- B
Dedicated leased lines
- C
SD-WAN (Software-Defined Wide Area Network)
- D
Satellite-based WAN
Show answer and explanation
Correct answer: C
Explanation
SD-WAN is the best choice for this scenario because it is designed to optimize WAN connectivity for modern enterprise architectures, including hybrid and cloud solutions. It offers dynamic traffic prioritization, cost efficiency by leveraging multiple transport types (including broadband), and high availability using intelligent path selection. These features align well with the organization's requirements for a scalable and flexible WAN solution.
- A. Incorrect.
MPLS offers high reliability and QoS (Quality of Service) but is typically more expensive and less flexible compared to SD-WAN for hybrid and cloud-integrated architectures.
- B. Incorrect.
Dedicated leased lines provide excellent reliability and performance but are cost-prohibitive and lack the flexibility to dynamically prioritize traffic or integrate with hybrid cloud environments.
- C. Correct.
SD-WAN provides cost efficiency, high availability, and dynamic traffic prioritization. It can also easily integrate with hybrid and cloud solutions, making it the most suitable option for the organization's requirements.
- D. Incorrect.
Satellite-based WAN is typically used for remote areas with limited connectivity options. However, it suffers from high latency and is not ideal for dynamic traffic prioritization or hybrid cloud integration.