1. What is Parquet ? Junior A. a columnar, indexed format native to the Hive ecosystem B. a row-based format with strong schema evolution, common in streaming C. a columnar storage format ideal for analytical reads and predicate pushdown D. a fast, splittable compression codec with a moderate ratio
2. Which term means: "a columnar storage format ideal for analytical reads and predicate pushdown"? Junior A. Parquet B. ORC C. Snappy D. Avro
3. Which statement is correct? Junior A. Parquet — a fast, splittable compression codec with a moderate ratio B. Parquet — gzip is not splittable, so one large gzip file is read by a single task C. Parquet — a columnar, indexed format native to the Hive ecosystem D. Parquet — a columnar storage format ideal for analytical reads and predicate pushdown
4. What is Avro ? Junior A. a columnar storage format ideal for analytical reads and predicate pushdown B. a fast, splittable compression codec with a moderate ratio C. a row-based format with strong schema evolution, common in streaming D. a columnar, indexed format native to the Hive ecosystem
5. Which term means: "a row-based format with strong schema evolution, common in streaming"? Junior A. Avro B. ORC C. gzip splittability D. Parquet
6. Which statement is correct? Junior A. Avro — a columnar storage format ideal for analytical reads and predicate pushdown B. Avro — a row-based format with strong schema evolution, common in streaming C. Avro — a fast, splittable compression codec with a moderate ratio D. Avro — gzip is not splittable, so one large gzip file is read by a single task
7. What is ORC ? Junior A. a row-based format with strong schema evolution, common in streaming B. a columnar, indexed format native to the Hive ecosystem C. a columnar storage format ideal for analytical reads and predicate pushdown D. a fast, splittable compression codec with a moderate ratio
8. Which term means: "a columnar, indexed format native to the Hive ecosystem"? Junior A. Snappy B. ORC C. Avro D. gzip splittability
9. Which statement is correct? Junior A. ORC — gzip is not splittable, so one large gzip file is read by a single task B. ORC — a columnar storage format ideal for analytical reads and predicate pushdown C. ORC — a row-based format with strong schema evolution, common in streaming D. ORC — a columnar, indexed format native to the Hive ecosystem
10. What is gzip splittability ? Mid A. gzip is not splittable, so one large gzip file is read by a single task B. a fast, splittable compression codec with a moderate ratio C. a row-based format with strong schema evolution, common in streaming D. a columnar, indexed format native to the Hive ecosystem
11. Which term means: "gzip is not splittable, so one large gzip file is read by a single task"? Mid A. Parquet B. ORC C. Avro D. gzip splittability
12. Which statement is correct? Mid A. gzip splittability — a fast, splittable compression codec with a moderate ratio B. gzip splittability — gzip is not splittable, so one large gzip file is read by a single task C. gzip splittability — a columnar storage format ideal for analytical reads and predicate pushdown D. gzip splittability — a row-based format with strong schema evolution, common in streaming
13. What is Snappy ? Junior A. a fast, splittable compression codec with a moderate ratio B. a columnar storage format ideal for analytical reads and predicate pushdown C. gzip is not splittable, so one large gzip file is read by a single task D. a columnar, indexed format native to the Hive ecosystem
14. Which term means: "a fast, splittable compression codec with a moderate ratio"? Junior A. Snappy B. gzip splittability C. Avro D. Parquet
15. Which statement is correct? Junior A. Snappy — a columnar storage format ideal for analytical reads and predicate pushdown B. Snappy — a fast, splittable compression codec with a moderate ratio C. Snappy — a row-based format with strong schema evolution, common in streaming D. Snappy — gzip is not splittable, so one large gzip file is read by a single task