a) collation b) collection c) heap d) none of the mentioned Answer: a Explanation: MongoDB does not support collation-based ...
View QuestionMongoDB uses a ____________ lock that allows concurrent read access to a database but exclusive write access to a single write operation.
a) readers b) readers-writer c) writer d) none of the mentioned Answer: b Explanation: Before version 2.2, ...
View QuestionMongoDB supports fixed-size collections called ____________ collections.
a) primary b) secondary c) capped d) all of the mentioned Answer: c Explanation: This type of collection maintains ...
View Question____________ can be used for batch processing of data and aggregation operations.
a) Hive b) MapReduce c) Oozie d) None of the mentioned Answer: b Explanation: The aggregation framework enables users ...
View QuestionMongoDB can be used as a ____________ taking advantage of load balancing and data replication features over multiple machines for storing files.
a) AMS b) CMS c) File system d) None of the mentioned Answer: a Explanation: The data ...
View QuestionPoint out the wrong statement.
a) Each replica set member will act in the role of primary replica only b) The primary replica ...
View QuestionMongoDB scales horizontally using _________ for load balancing purpose.
a) Replication b) Partitioning c) Sharding d) None of the mentioned Answer: c Explanation: The user chooses a shard ...
View Question___________ replicas maintain a copy of the data on the primary using built-in replication.
a) Primary b) Secondary c) Backup d) All of the mentioned Answer: b Explanation: When a primary replica fails, ...
View QuestionPoint out the correct statement.
a) MongoDB cannot be used as a file system b) MongoDB can run over single servers only c) Embedded documents and ...
View QuestionMongoDB provides high ____________ with replica sets.
a) performance b) availability c) scalability d) none of the mentioned Answer: b Explanation: A replica set consists of two or ...
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