CompTIA Cloud+ (CV0-002) — Question 74

A system's application servers need to be patched. The requirements for maintenance work are as follows:
✑ System downtime is not allowed.
✑ The application server in use must be in the sane patch status.
✑ System performance must be maintained during patching work.
✑ Testing after patching must be done before the application server is in use.
✑ If any trouble occurs, recover the previous version in ten minutes.
Which of the following methodologies should be selected?

Answer options

• A. Rolling update
• B. Patching directly
• C. Blue-green deployment
• D. Three staging environments

Correct answer: D

Explanation

The correct answer is D, as using three staging environments allows for testing after patching while ensuring system performance and minimizing downtime. Options A and C do not guarantee that all servers will be in the same patch status simultaneously. Option B does not accommodate the need for downtime and testing before the servers are used.