CKA Practice Question: Cluster Architecture, Installation and Configuration
This CKA practice question tests your understanding of cluster architecture, installation and configuration. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which THREE of the following are steps required when restoring an etcd cluster from a snapshot?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Run 'etcdctl snapshot restore' specifying a new data directory
Option A is correct because 'etcdctl snapshot restore' is the command used to restore an etcd cluster from a snapshot. You must specify a new data directory (e.g., --data-dir=/var/lib/etcd-restored) to avoid overwriting existing data and to allow the restored snapshot to be used as a fresh data source for the etcd member.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Run 'etcdctl snapshot restore' specifying a new data directory
Why this is correct
Restore command creates a new data directory from snapshot.
Related concept
Read the scenario before looking for a memorised answer.
✓
Update the etcd configuration to point to the new data directory
Why this is correct
After restore, you must configure etcd to use the new data dir.
Related concept
Read the scenario before looking for a memorised answer.
✗
Restore the snapshot on every etcd member in the cluster
Why it's wrong here
Typically, you restore on one node and let it sync, or restore all from common snapshot; not always required.
✓
Stop the etcd service on the node
Why this is correct
Must stop etcd before restoring data to avoid corruption.
Related concept
Read the scenario before looking for a memorised answer.
✗
Run 'kubeadm init' to reinitialize the control plane
Why it's wrong here
kubeadm init is for initial setup, not restore.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume the snapshot must be restored on every member, but in practice you restore on one member and let the cluster rebuild itself, or you restore individually with unique data directories and cluster tokens.
Detailed technical explanation
How to think about this question
When restoring an etcd cluster from a snapshot, the 'etcdctl snapshot restore' command creates a new data directory with a fresh cluster ID and member ID, which prevents conflicts with the existing cluster state. After restoration, you must update the etcd configuration (e.g., --data-dir flag in systemd unit or etcd.yaml) to point to this new directory and restart the etcd service. In a multi-member cluster, you typically restore on one node, then start etcd on that node, and other members join using the '--initial-cluster' flag or by copying the restored data directory and adjusting member names.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the CKA exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CKA question in full detail.
Cluster Architecture, Installation and Configuration — This question tests Cluster Architecture, Installation and Configuration — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Run 'etcdctl snapshot restore' specifying a new data directory — Option A is correct because 'etcdctl snapshot restore' is the command used to restore an etcd cluster from a snapshot. You must specify a new data directory (e.g., --data-dir=/var/lib/etcd-restored) to avoid overwriting existing data and to allow the restored snapshot to be used as a fresh data source for the etcd member.
What should I do if I get this CKA question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
This CKA practice question is part of Courseiva's free CNCF certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CKA exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.