Backup Quiz

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💾 Cassandra Administration – Backup

20 questions · 15 min timer · Explanations included · Free

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What is the primary purpose of the 'nodetool refresh' command in the context of recovery?

To refresh the node's configuration settings.

To clear the cache and improve performance.

To restart the node after a configuration change.

To load new SSTables into the system after a manual copy.

None

The 'nodetool refresh' command is used to load new SSTables into the system after they have been manually copied, which is crucial for making restored data available.

Which of the following is a best practice when performing a backup of a Cassandra cluster?

Disable all read operations during the backup process.

Use a single node to perform backups to reduce complexity.

Perform backups during peak usage times for consistency.

Distribute backup operations across multiple nodes to minimize impact.

None

Distributing backup operations across multiple nodes minimizes the impact on any single node, aligning with best practices for maintaining cluster performance during backups.

Which of the following is a disadvantage of using only snapshots for backup in Cassandra?

Snapshots cannot be automated.

Snapshots do not capture the current state of the commit logs.

Snapshots are not compatible with incremental backups.

Snapshots require significant downtime to create.

None

Snapshots do not capture the current state of the commit logs, which means recent writes might be lost if not combined with commit log backups, highlighting a limitation in snapshot-only strategies.

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