A stateful application requires a volume that can be mounted by multiple pods across different nodes simultaneously. The storage backend supports this. The team is using a CSI driver. Which accessMode should be used, and what is a potential trade-off?

ReadWriteMany, which may require additional configuration on the storage backend for concurrent access

ReadWriteOncePod, which is the most secure but restricts to a single pod

ReadOnlyMany, which allows multi-node access but only in read-only mode

ReadWriteOnce, which is simpler but limits access to a single node

A team is deploying a CSI driver for a new storage backend. After installing the driver, they create a StorageClass and a PVC. The PVC remains in Pending state. Which of the following is the most likely cause?

The PVC's accessMode is set to ReadWriteMany and the backend only supports ReadWriteOnce

The CNI plugin is not installed on the worker nodes

The StorageClass has the wrong reclaimPolicy

The CSI driver's controller pod is not running or is not registered with the kubelet

What is the primary purpose of the Container Network Interface (CNI) specification in a Kubernetes cluster?

To provide a built-in network overlay that Kubernetes uses for all cluster traffic

To enforce network policies that restrict traffic between pods

To define a standard way for container runtimes to invoke network plugins that configure pod networking

To manage the assignment of IP addresses to nodes in the cluster

What is the main role of the Container Storage Interface (CSI) in Kubernetes?

To create a default storage class that all clusters must use

To manage the lifecycle of container images on nodes

To replace the need for PersistentVolume and PersistentVolumeClaim objects

To provide a standard API for storage vendors to integrate with Kubernetes for persistent volumes

Certified Kubernetes Administrator (CKA)

Domain 4Objective 7

Understand Extension Interfaces (CNI, CSI, CRI, Etc.) CKA Practice Questions (Page 2)

Part of the Cluster Architecture, Installation and Configuration domain, which accounts for 25% of the CKA exam. Linux Foundation does not publish an official question count, but from its 120-minute exam (~50–80 total, ~13–20 in this domain), expect 2–3 from this objective — we provide 26 practice questions to prepare you well beyond it. (estimate)

26questions here

6free pages

4concepts

25%of the exam

Questions 6–10

6expert · hard
A stateful application requires a volume that can be mounted by multiple pods across different nodes simultaneously. The storage backend supports this. The team is using a CSI driver. Which accessMode should be used, and what is a potential trade-off?
Select an answer first
7application · medium
A stateful application requires a volume that can be attached to multiple pods on the same node concurrently. The storage backend supports this access mode. Which accessMode should be specified in the PVC?
Select an answer first
8application · medium
A team is deploying a CSI driver for a new storage backend. After installing the driver, they create a StorageClass and a PVC. The PVC remains in Pending state. Which of the following is the most likely cause?
Select an answer first
9foundation · easy
What is the primary purpose of the Container Network Interface (CNI) specification in a Kubernetes cluster?
Select an answer first
10foundation · easy
What is the main role of the Container Storage Interface (CSI) in Kubernetes?
Select an answer first

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