MongoDB

MongoDB

Big data and MongoDB has 12 Questions
MongoDB uses a ____________ lock that allows concurrent read access to a database but exclusive write access to a single write operatio

readers
readers-writer
writer
None of the mentioned
Which of the following sorting is not supported by MongoDB

collation
collection
heap
None of the mentioned
MongoDB supports fixed-size collections called ____________ collection

primary
secondary
capped
All of the mentioned
_____________ can be used for batch processing of data and aggregation operation

Hive
MapReduce
Oozie
None of the mentioned
MongoDB can be used as a ____________, taking advantage of load balancing and data replication features over multiple machines for storing file

AMS
CMS
File system
None of the mentioned
Point out the wrong statement

Each replica set member will act in the role of primary replica only
The primary replica performs all writes and reads by default
Secondaries can also perform read operations, but the data is eventually consistent by default
None of the mentioned
___________ replicas maintain a copy of the data on the primary using built-in replicatio

Primary
Secondary
Backup
All of the mentioned
Point out the correct statement

MongoDB cannot be used as a file system
MongoDB can run over single servers only
Embedded documents and arrays reduce need for joins
None of the mentioned
MongoDB provides high ____________ with replica set

performance
availability
scalability
None of the mentioned
Point out the wrong statement

Each replica set member will act in the role of primary replica only
The primary replica performs all writes and reads by default
Secondaries can also perform read operations, but the data is eventually consistent by default
None of the mentioned
MongoDB scales horizontally using _________ for load balancing purpos

Replication
Partitioning
Sharding
None of the mentioned
Point out the correct statement

MongoDB cannot be used as a file system
MongoDB can run over single servers only
Embedded documents and arrays reduce need for joins
None of the mentioned