Explanation:Write concern semantics allow clients to specify the assurance that MongoDB provides when reporting on the success of a write operation. 9. MongoDB process collection of documents using _________ operations.
A. Hbase
B. Hive
C. Map-reduce
D. None of the mentioned
Answer:A
Explanation:Write concern semantics allow clients to specify the assurance that MongoDB provides when reporting on the success of a write operation. 9. MongoDB process collection of documents using _________ operations.
A. Hbase B. Hive C. Map-reduce D. None of the mentioned
Explanation:In addition to the basic queries, MongoDB provides several data aggregation features. 10. Which of the following pipeline is used for aggregation in MongoDB ?