Question 1hardmultiple choice
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Quick Answer
The correct command is `etcdctl snapshot restore /backup/etcd-snapshot.db --data-dir=/var/lib/etcd-restored`, because `etcdctl snapshot restore` is the dedicated command for rebuilding an etcd member’s data directory from a snapshot file, and the `--data-dir` flag explicitly defines where the restored data should be written so the new etcd instance can use it. This process is critical for disaster recovery, as it recreates the member’s state from the backup without relying on the original cluster. On the CKA exam, this tests your ability to recover etcd after a failure or migration, often appearing in scenarios where you must restore a snapshot to a different path than the default `/var/lib/etcd`. A common trap is confusing `snapshot restore` with `snapshot save` or omitting the `--data-dir` flag, which would leave the restored data in an unexpected location. Remember the mnemonic: “Restore requires a new directory—specify it with `--data-dir`.”
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.
An administrator backs up etcd data using 'ETCDCTL_API=3 etcdctl snapshot save /backup/etcd-snapshot.db'. Which command correctly restores this snapshot on a new etcd instance?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"which command"Why it matters: Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
etcdctl snapshot restore /backup/etcd-snapshot.db --data-dir=/var/lib/etcd-restored
Option B is correct because `etcdctl snapshot restore` is the proper command to restore an etcd snapshot to a new data directory. The `--data-dir` flag specifies where the restored data should be placed, allowing the new etcd instance to use that directory. This command recreates the etcd member's data from the snapshot file, which is essential for disaster recovery.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Common exam traps
Common exam trap: answer the scenario, not the keyword
CNCF often tests the exact subcommand syntax, so candidates mistakenly choose `etcdctl restore` or `etcdctl snapshot load` instead of the correct `etcdctl snapshot restore`.
Detailed technical explanation
How to think about this question
The `etcdctl snapshot restore` command reinitializes the etcd data directory, creating a new member with a fresh cluster ID and member ID to avoid conflicts with the original cluster. This is critical when restoring to a new instance because the snapshot contains the full key-value store and metadata, but the restored member must be treated as a new member in a new cluster. In a real-world scenario, after restoring, you must update the etcd configuration (e.g., `--initial-cluster` and `--initial-cluster-token`) to point to the new data directory and ensure the restored member can join or form a cluster.
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.
What to study next
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FAQ
Questions learners often ask
What does this CKA question test?
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: etcdctl snapshot restore /backup/etcd-snapshot.db --data-dir=/var/lib/etcd-restored — Option B is correct because `etcdctl snapshot restore` is the proper command to restore an etcd snapshot to a new data directory. The `--data-dir` flag specifies where the restored data should be placed, allowing the new etcd instance to use that directory. This command recreates the etcd member's data from the snapshot file, which is essential for disaster recovery.
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.
Are there clue words in this question I should notice?
Yes — watch for: "which command". Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 30, 2026
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.
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