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350-401 · Question #991
350-401 Question #991: Real Exam Question with Answer & Explanation
The correct answer is A: lower control plane abstraction. Traditional WANs provide lower control plane abstraction and can have lower data plane overhead compared to modern SD-WAN solutions.
Submitted by tarun92· Mar 6, 2026
Question
What are two benefits of implementing a traditional WAN instead of an SD-WAN solution? (Choose two.)
Options
- Alower control plane abstraction
- Bfaster fault detection
- Csimplified troubleshooting
- Dcomprehensive configuration standardization
- Elower data plane overhead
Explanation
Traditional WANs provide lower control plane abstraction and can have lower data plane overhead compared to modern SD-WAN solutions.
Common mistakes.
- B. SD-WAN solutions generally offer faster fault detection due to centralized visibility and proactive monitoring capabilities, unlike traditional WANs which rely more on distributed monitoring and reactive troubleshooting.
- C. SD-WAN solutions are designed for simplified troubleshooting through centralized visibility, analytics, and policy-driven management, which is often more complex in traditional WANs.
- D. SD-WAN solutions inherently provide comprehensive configuration standardization through their centralized controllers and policy-based automation, which is typically harder to achieve and maintain in traditional WANs.
Concept tested. Traditional WAN vs. SD-WAN characteristics
Reference. https://www.cisco.com/c/en/us/products/routers/what-is-sd-wan.html
Topics
#Traditional WAN#SD-WAN#WAN architecture
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