A systems administrator is analyzing a report of slow perfor - CompTIA Cloud+ CV0-004

Question

A systems administrator is analyzing a report of slow performance in a cloud application. This application is working behind a network load balancer with two VMs, and each VM has its own digital certificate configured. Currently, each VM is consuming 85% CPU on average. Due to cost restrictions, the administrator cannot scale vertically or horizontally in the environment.

Which TWO of the following actions should the administrator take to improve performance? Select TWO options.

Answers
  1. correct
  2. correct
Explanation

Correct Answers: B. Move the digital certificate to the load balancer and E. Configure the communication between the load balancer and the VMs to use HTTP

Moving the digital certificates to the load balancer (B) offloads SSL/TLS processing from the overburdened VMs, reducing their CPU usage. 

Configuring the communication between the load balancer and the VMs to use HTTP (E) avoids encryption overhead, enhancing performance. 

Since cost restrictions prevent adding resources, these two actions optimize the existing setup without additional expenses, significantly improving overall system performance and efficiency.

Why the Other Choices Are Incorrect :

  • A. Configure the communication between the load balancer and the VMs to use a VPN:Using a VPN adds encryption overhead and complexity, increasing CPU usage rather than reducing it, which worsens the performance issue in this scenario.
  • C. Configure the communication between the load balancer and the VMs to use HTTPS: HTTPS adds encryption demands to the backend VMs. Given that CPU usage is already high, this would further strain resources rather than alleviate the load.
  • D. Reissue digital certificates on the VMs: Reissuing certificates does not reduce CPU utilization or improve performance. It’s an administrative task unrelated to addressing the root cause of the high CPU usage.
  • F. Keep the digital certificates on the VMs:Retaining certificates on the VMs means SSL termination continues at the VM level, maintaining the current high CPU burden, which contradicts the performance improvement goal.

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