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Exam CKA Topic 1 Question 51 Discussion

Actual exam question for Linux Foundation's CKA exam
Question #: 51
Topic #: 1
Describe the difference between 'ReadWriteOnce' and access modes for PersistentVolumeClaims. In what scenarios would you choose each?

Suggested Answer:

See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
ReadWriteOnce:
- Description: This mode allows only one pod to mount the volume at a time.
- Scenarios: Ideal for applications requiring exclusive access to the storage, such as databases where data integrity is crucial. Examples include:
- Single-instance databases (e.g., MySQL, PostgreSQL)
- Applications that modify files concurrently and need to ensure consistency.
ReadWriteMany:
- Description: This mode allows multiple pods to mount the volume simultaneously.
- Scenarios: Suitable for applications that need shared access to data, such as shared storage for applications, I configuration files, or log files. Examples include:
- Shared file systems (e.g., NFS, GlusterFS)
- Applications where multiple pods need to access the same data simultaneously.

by Tina at Jul 07, 2026, 09:53 AM

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