In Kubernetes, what is the difference between a container's resource request and its resource limit?

Requests and limits are both enforced at runtime and have no effect on scheduling.

Limits are used for scheduling decisions, while requests are enforced at runtime.

Requests are used for scheduling decisions, while limits are enforced at runtime and can affect QoS class.

Requests and limits are both used only for scheduling decisions.

An administrator needs to run a one-time diagnostic Pod on a specific node, `node-01`, to capture network traces. The Pod must start immediately and bypass the scheduler's normal placement logic. Which approach should be used?

Use nodeAffinity with requiredDuringSchedulingIgnoredDuringExecution to match a label on `node-01`.

Set `spec.nodeName` to `node-01` in the Pod spec.

Use a nodeSelector with a label unique to `node-01`.

Create a Pod with a toleration for any taint on `node-01`.

Which of the following is a potential drawback of using spec.nodeName to assign a Pod to a node?

The Pod will be scheduled on the node only if it has the correct labels.

The Pod will not be rescheduled if the node fails or becomes unavailable.

The Pod will have a lower priority than other Pods.

The Pod will be rejected if the node has taints.

What is a toleration in Kubernetes?

A namespace-level setting that allows all Pods to bypass taints.

A scheduler configuration that ignores taints.

A Pod field that allows the Pod to be scheduled on nodes with matching taints.

A node field that removes taints from the node.

Certified Kubernetes Administrator (CKA)

Domain 3Objective 5

Configure Pod Admission and Scheduling (limits, Node Affinity, Etc.) CKA Practice Questions (Page 2)

Part of the Workloads and Scheduling domain, which accounts for 15% of the CKA exam. Linux Foundation does not publish an official question count, but from its 120-minute exam (~50–80 total, ~8–12 in this domain), expect 2–2 from this objective — we provide 29 practice questions to prepare you well beyond it. (estimate)

29questions here

6free pages

10concepts

15%of the exam

Questions 6–10

6foundation · easy
In Kubernetes, what is the difference between a container's resource request and its resource limit?
Select an answer first
7foundation · easy
Which QoS class is assigned to a Pod if every container in the Pod has both CPU and memory requests and limits set to the same value?
Select an answer first
8application · medium
An administrator needs to run a one-time diagnostic Pod on a specific node, `node-01`, to capture network traces. The Pod must start immediately and bypass the scheduler's normal placement logic. Which approach should be used?
Select an answer first
9foundation · easy
Which of the following is a potential drawback of using spec.nodeName to assign a Pod to a node?
Select an answer first
10foundation · easy
What is a toleration in Kubernetes?
Select an answer first

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