300-420 Question 152
Select 3Your organization is designing a WAN connectivity solution to support a hybrid environment where critical applications are hosted on both on-premises data centers and public cloud platforms. The solution must provide high reliability, low-latency connections to the cloud while maintaining cost efficiency for less critical traffic. Which WAN connectivity options would best meet these requirements?
- A
MPLS for critical application traffic with a direct cloud connection
- B
Internet VPN for all traffic to reduce costs
- C
SD-WAN to dynamically route traffic based on application requirements
- D
Dedicated leased lines for all cloud-bound traffic
- E
A combination of MPLS and Internet links managed by SD-WAN
Show answer and explanation
Correct answers: A, C, E
Explanation
To design a WAN solution for a hybrid environment, it is essential to balance reliability, performance, and cost. MPLS with direct cloud connections ensures high performance for critical traffic, while SD-WAN adds the ability to dynamically route traffic based on application needs. Combining MPLS and Internet links under SD-WAN management provides a cost-effective solution, making it an ideal choice for hybrid cloud deployments.
- A. Correct.
MPLS provides high reliability and low-latency connections, which are ideal for critical application traffic. Pairing it with a direct cloud connection ensures optimal performance for cloud-hosted applications.
- B. Incorrect.
Internet VPN is cost-effective but may not provide the performance or reliability necessary for critical application traffic, especially in a hybrid environment.
- C. Correct.
SD-WAN enables dynamic routing of traffic based on application requirements, ensuring that critical traffic is prioritized while optimizing costs for less critical traffic.
- D. Incorrect.
Dedicated leased lines offer excellent performance but can be prohibitively expensive and are not cost-efficient for less critical traffic or hybrid deployments.
- E. Correct.
Using a combination of MPLS and Internet links managed by SD-WAN provides the flexibility to route traffic dynamically. Critical traffic can leverage MPLS for reliability, while less critical traffic can use cost-effective Internet links.