1. What is Wide-column row ? Mid A. the part of the primary key that orders rows on disk within a single partition B. a marker written to record that a value was deleted, so the removal propagates across replicas before compaction reclaims it C. the configured number of nodes that keep a copy of each partition in a keyspace D. a record whose columns can vary per row and can number in the millions under one partition
2. Which term means: "a record whose columns can vary per row and can number in the millions under one partition"? Mid A. Wide-column row B. Replication factor C. Tombstone D. Clustering key
3. Which statement is correct? Mid A. Wide-column row — a marker written to record that a value was deleted, so the removal propagates across replicas before compaction reclaims it B. Wide-column row — the configured number of nodes that keep a copy of each partition in a keyspace C. Wide-column row — the write-optimized storage structure that buffers writes in memory and flushes sorted immutable files to disk D. Wide-column row — a record whose columns can vary per row and can number in the millions under one partition
4. What is Clustering key ? Mid A. the write-optimized storage structure that buffers writes in memory and flushes sorted immutable files to disk B. the part of the primary key that orders rows on disk within a single partition C. a record whose columns can vary per row and can number in the millions under one partition D. a marker written to record that a value was deleted, so the removal propagates across replicas before compaction reclaims it
5. Which term means: "the part of the primary key that orders rows on disk within a single partition"? Mid A. LSM tree B. Replication factor C. Wide-column row D. Clustering key
6. Which statement is correct? Mid A. Clustering key — a marker written to record that a value was deleted, so the removal propagates across replicas before compaction reclaims it B. Clustering key — the write-optimized storage structure that buffers writes in memory and flushes sorted immutable files to disk C. Clustering key — the configured number of nodes that keep a copy of each partition in a keyspace D. Clustering key — the part of the primary key that orders rows on disk within a single partition
7. What is LSM tree ? Senior A. the configured number of nodes that keep a copy of each partition in a keyspace B. the write-optimized storage structure that buffers writes in memory and flushes sorted immutable files to disk C. a record whose columns can vary per row and can number in the millions under one partition D. a marker written to record that a value was deleted, so the removal propagates across replicas before compaction reclaims it
8. Which term means: "the write-optimized storage structure that buffers writes in memory and flushes sorted immutable files to disk"? Senior A. LSM tree B. Clustering key C. Replication factor D. Wide-column row
9. Which statement is correct? Senior A. LSM tree — the write-optimized storage structure that buffers writes in memory and flushes sorted immutable files to disk B. LSM tree — the configured number of nodes that keep a copy of each partition in a keyspace C. LSM tree — a marker written to record that a value was deleted, so the removal propagates across replicas before compaction reclaims it D. LSM tree — a record whose columns can vary per row and can number in the millions under one partition
10. What is Tombstone ? Senior A. a record whose columns can vary per row and can number in the millions under one partition B. the part of the primary key that orders rows on disk within a single partition C. the configured number of nodes that keep a copy of each partition in a keyspace D. a marker written to record that a value was deleted, so the removal propagates across replicas before compaction reclaims it
11. Which term means: "a marker written to record that a value was deleted, so the removal propagates across replicas before compaction reclaims it"? Senior A. Wide-column row B. Tombstone C. Clustering key D. LSM tree
12. Which statement is correct? Senior A. Tombstone — a record whose columns can vary per row and can number in the millions under one partition B. Tombstone — a marker written to record that a value was deleted, so the removal propagates across replicas before compaction reclaims it C. Tombstone — the configured number of nodes that keep a copy of each partition in a keyspace D. Tombstone — the write-optimized storage structure that buffers writes in memory and flushes sorted immutable files to disk
13. What is Replication factor ? Mid A. the configured number of nodes that keep a copy of each partition in a keyspace B. a marker written to record that a value was deleted, so the removal propagates across replicas before compaction reclaims it C. a record whose columns can vary per row and can number in the millions under one partition D. the write-optimized storage structure that buffers writes in memory and flushes sorted immutable files to disk
14. Which term means: "the configured number of nodes that keep a copy of each partition in a keyspace"? Mid A. Clustering key B. Replication factor C. Tombstone D. Wide-column row
15. Which statement is correct? Mid A. Replication factor — a record whose columns can vary per row and can number in the millions under one partition B. Replication factor — the write-optimized storage structure that buffers writes in memory and flushes sorted immutable files to disk C. Replication factor — the configured number of nodes that keep a copy of each partition in a keyspace D. Replication factor — a marker written to record that a value was deleted, so the removal propagates across replicas before compaction reclaims it