MongoDB interview questions part 46
MongoDB interview questions part 46
Take as many assements as you can to improve your validate your skill rating
Total Questions: 20
1. How many types of sharding exist in MongoDB ?
Correct Answer is : 2
2. _______ scaling adds more CPU and storage resources to increase capacity.
Correct Answer is : Vertical
3. Point out the wrong statement :
Correct Answer is : Scaling by adding capacity do not have limitations.
4. _______ divides the data set and distributes the data over multiple servers, or shards.
Correct Answer is : Sharding
5. MongoDB supports sharding through the configuration of a sharded ______
Correct Answer is : clusters
6. How many components are present in sharded cluster ?
Correct Answer is : 2
7. To provide high availability and data consistency, in a production sharded cluster, each shard is a :
Correct Answer is : replica set
8. _________ interface with client applications and direct operations to the appropriate shard or shards.
Correct Answer is : Query Routers
9. The _________ process is responsible for redistributing the chunks of a sharded collection evenly among the shards for every sharded collection.
Correct Answer is : Balancer
10. Point out the correct statement:
Correct Answer is : Any mongos instance in the cluster can start a balancing round
11. Use _______ migration to distribute data during bulk inserts.
Correct Answer is : manual
12. The balancer process sends the _______ command to the source shard.
Correct Answer is : moveChunk
13. Point out the wrong statement :
Correct Answer is : None of the mentioned
14. The source shard is responsible for incoming ______ operations for the chunk.
Correct Answer is : write
15. ________ can alter the behavior so that the delete phase of the current migration blocks the start of the next chunk migration.
Correct Answer is : _waitForDelete
16. The default value _________ becomes true for all chunk migrations.
Correct Answer is : secondaryThrottle
17. You can set the _________ option on the balancer configuration to set different write concern semantics.
Correct Answer is : writeConcern
18. With __________ enabled, the source shard archives the documents in the migrated chunks in a directory named after the collection namespace.
Correct Answer is : sharding.archiveMovedChunks
19. __________ references the root document, i.e. the top-level document, currently being processed in the aggregation pipeline stage.
Correct Answer is : ROOT
20. Point out the wrong statement :
Correct Answer is : None of the mentioned
