300-415 Question #179: Real Exam Question with Answer & Explanation

Question

Options

• A4vCPUs, 16 GB
• B8vCPUs, 16 GB
• C8vCPUs, 4GB
• D2vCPUs, 4GB

Explanation

For a Cisco vSmart controller supporting 251 to 1000 WAN Edge devices in software version 20.4.x, the recommended resource allocation on a KVM server is 8 vCPUs and 16 GB of RAM. These specifications ensure optimal performance and scalability for managing the control plane in an SD-WAN environment of this size.

Common mistakes.

• A. While 16 GB RAM is appropriate, 4 vCPUs might be insufficient for a vSmart controller managing up to 1000 devices in this specific software version, potentially leading to performance bottlenecks.
• C. 4 GB of RAM is generally insufficient for a vSmart controller managing a medium-to-large number of devices (251-1000), even with 8 vCPUs, as control plane operations can be memory-intensive.
• D. Both 2 vCPUs and 4 GB of RAM are insufficient for a vSmart controller managing 251 to 1000 devices, which would likely result in severe performance degradation and instability.

Concept tested. Cisco vSmart controller KVM resource requirements

Reference. https://www.cisco.com/c/en/us/td/docs/routers/sdwan/vManage_Install_Guide/vManage-install-guide.html#SystemRequirements

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