Understand Multi-Container Pod Design Patterns (e.g. Sidecar, Init and Others) CKAD Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   Which mechanism can a sidecar container use to signal that it is ready to perform its supporting role?

   • AA container lifecycle hook
   • BA readiness probe
   • CA startup probe
   • DA liveness probe
   Reveal Solution Discussion Select an answer first
2. 7foundation · easy

   Which of the following is a key characteristic of a sidecar container in a Pod?

   • AIt is started only when the main container fails.
   • BIt runs to completion before the main container starts.
   • CIt runs concurrently with the main container for the Pod's lifetime.
   • DIt is automatically restarted if the main container exits.
   Reveal Solution Discussion Select an answer first
4. 8application · medium

   A company runs a legacy application that emits logs in a custom text format. A new central logging system requires JSON-formatted logs. The team cannot modify the legacy application. What multi-container Pod pattern should they use?

   • AAdapter container that replaces the main application container.
   • BSidecar container that reads the log file from a shared volume, converts it to JSON, and writes it to stdout.
   • CInit container that converts the log file before the main container starts.
   • DAmbassador container that proxies log output to the logging system.
   Reveal Solution Discussion Select an answer first
5. 9application · medium

   A Pod runs a web application that writes session data to a local file. A sidecar must back up this file to a remote store every minute. The sidecar must not interfere with the application's writes. What should they do?

   • AUse a shared emptyDir volume and have the sidecar copy the file to the remote store; the application writes to the same volume.
   • BUse a ConfigMap volume and have the sidecar read the file from there.
   • CUse a shared hostPath volume and have the sidecar move the file to the remote store.
   • DHave the sidecar read the file directly from the application container's filesystem.
   Reveal Solution Discussion Select an answer first
6. 10foundation · easy

   Which multi-container Pod pattern is best described as a container that runs alongside the main application container to provide supporting functionality such as log rotation or file watching?

   • AAmbassador container
   • BSidecar container
   • CAdapter container
   • DInit container
   Reveal Solution Discussion Select an answer first