a) data processing b) information processing c) knowledge processing d) none of the mentioned Answer: a Explanation: MongoDB can return ...
View QuestionMongoDB process collection of documents using _________ operations.
a) Hbase b) Hive c) Map-reduce d) None of the mentioned Answer: c Explanation: In addition to ...
View QuestionApplications can also control the behavior of write operations using _______ concern.
a) read b) write c) truncate d) all of the mentioned Answer: b Explanation: Write concern semantics allow clients ...
View QuestionWhich of the following preference determines how the client direct read operations to the set?
a) read b) write c) update d) delete Answer: a Explanation: For replica sets and sharded clusters ...
View QuestionWhich of the following operation adds a new document to the users collection?
a) add b) insert c) truncate d) drop Answer: b Explanation: For the update and delete ...
View QuestionPoint out the wrong statement.
a) Indexes cannot enforce uniqueness in collection b) CRUD stands for create, read, update, and delete c) CRUD application ...
View QuestionIn MongoDB _________ operations modify the data of a single collection.
a) CRUD b) GRID c) READ d) All of the mentioned Answer: a Explanation: Data modification refers to operations ...
View QuestionMongoDB stores all documents in _____________
a) tables b) collections c) rows d) all of the mentioned Answer: b Explanation: Collections are analogous to a ...
View QuestionPoint out the correct statement.
a) Secondary indexes allow applications to store a view of a portion of the collection in an ...
View QuestionA query may include a ___________ that specifies the fields from the matching documents to return.
a) selection b) projection c) union d) none of the mentioned Answer: b Explanation: Queries specify criteria, or conditions, that identify ...
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