Why are certificates a common cause of backend installation failure?
Select an answer to reveal the explanation.
Short Explanation
If every backend process is up but nothing talks to anything, suspect certificates. They authenticate components over TLS, so an expired, untrusted, or mismatched cert blocks communication even when services look healthy.
Full Explanation
The correct answer is the one stating that backend components authenticate to each other over TLS, so an expired, untrusted, or mismatched certificate prevents them from communicating even though each is running. Internal TLS means a hostname mismatch, expiry, or missing trust anchor blocks component-to-component communication, producing a confusing state where the services appear healthy individually. The telemetry-retention claim is incorrect because retention is a configuration policy. The agent-mode claim is incorrect because agent mode support is unrelated to certificates. The installer-won't-start claim is incorrect because the installer typically runs and the failure appears when components try to connect. For the exam, include certificate validation among the backend install checks.