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5V0-43.21 · Question #9

An operator suspects that the currently deployed Service Engines are undersized and is concerned about the impact of that situation. They are configured with 1 vCPU and 2 GB RAM. Why is the operator…

The correct answer is D. Client connections would be redirected to another pool. When NSX Advanced Load Balancer Service Engines are undersized (minimum 1 vCPU / 2 GB RAM), they quickly exhaust their resource capacity under real traffic loads - and when that capacity ceiling is hit, the SE's built-in response is to redirect client connections to another…

Avi Vantage Platform Deployment and Configuration

Question

An operator suspects that the currently deployed Service Engines are undersized and is concerned about the impact of that situation. They are configured with 1 vCPU and 2 GB RAM. Why is the operator concerned?

Options

  • AOperator would be unable to login to NSX Load Balancer Admin console
  • BAdditional Virtual Services could not be placed
  • CSSL throughput would be affected
  • DClient connections would be redirected to another pool

How the community answered

(28 responses)
  • A
    11% (3)
  • B
    4% (1)
  • C
    7% (2)
  • D
    79% (22)

Explanation

When NSX Advanced Load Balancer Service Engines are undersized (minimum 1 vCPU / 2 GB RAM), they quickly exhaust their resource capacity under real traffic loads - and when that capacity ceiling is hit, the SE's built-in response is to redirect client connections to another pool (such as a sorry pool or backup pool), which is directly and visibly disruptive to end users. This is the operator's core concern: not just degraded performance, but active traffic misdirection that clients will experience. Option A is wrong because SE sizing is a data-plane concern and has no bearing on logging into the NSX ALB management console. Option B is plausible but secondary - while a small SE may not host additional Virtual Services, the more urgent impact is what happens to existing connections already being served. Option C is tempting since 1 vCPU severely limits SSL/TLS processing throughput, but SSL degradation is a performance issue, not a routing one; the exam is asking about the consequence of being fully undersized.

Memory tip: Think "undersized SE = out of runway → must land somewhere else." The SE can't just slow down gracefully; it has to redirect - which maps directly to answer D.

Topics

#Service Engine Sizing#Resource Constraints#Load Balancing#Connection Handling

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