Backup Quiz

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💾 Cassandra Administration – Backup

20 questions · 15 min timer · Explanations included · Free

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Which of the following describes a 'snapshot' in Cassandra?

A log of all write operations since the last backup.

A real-time backup of the entire cluster.

A compressed archive of all data files.

A point-in-time copy of SSTables using hard links.

None

A snapshot in Cassandra is a point-in-time copy of SSTables using hard links, which allows for efficient backup without duplicating data.

What is a potential risk of not regularly clearing old snapshots in Cassandra?

Increased latency in read operations.

Excessive disk space usage leading to performance degradation.

Increased network traffic during repairs.

Increased risk of data corruption.

None

Not regularly clearing old snapshots can lead to excessive disk space usage, which may degrade performance and cause storage issues, aligning with best practices for disk management.

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

Snapshots require significant downtime to create.

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

Snapshots cannot be automated.

Snapshots are not compatible with incremental backups.

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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