MongoDB interview questions part 45
MongoDB interview questions part 45
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Total Questions: 20
1. MongoDB provides the _________ command to combine contiguous chunk ranges into a single chunk.
Correct Answer is : mergeChunks
2. Use ________ to determine the current chunk ranges across the cluster.
Correct Answer is : sh.status()
3. Point out the wrong statement :
Correct Answer is : None of the mentioned
4. __________ splits the chunk that contains the shard key value specified by the query at the chunk’s median point.
Correct Answer is : sh.splitFind()
5. _________ splits a chunk at the shard key value specified by the query.
Correct Answer is : sh.splitAt
6. sh.splitFind () Splits the chunk that contains the shard key value specified by the query at the chunk’s ______ point.
Correct Answer is : median
7. The mergeChunks command requires at least _______ empty input chunk.
Correct Answer is : one
8. The chunkSize and ________ options, passed at startup to the mongos, do not affect the chunk size after you have initialized the cluster.
Correct Answer is : –chunkSize
9. A sharded cluster can contain __________ query router to divide the client request load.
Correct Answer is : more than 1
10. Point out the correct statement:
Correct Answer is : MongoDB distributes data, or shards, at the collection level
11. ________ servers store the cluster’s metadata.
Correct Answer is : Local
12. The query router uses __________ to target operations to specific shards.
Correct Answer is : metadata
13. Point out the wrong statement :
Correct Answer is : For hash-based sharding, MongoDB divides the data set into ranges determined by the shard key values to provide hash based partitioning
14. Production sharded clusters have exactly ______ config servers.
Correct Answer is : 3
15. A _________ key is either an indexed field or an indexed compound field that exists in every document in the collection.
Correct Answer is : shard
16. To divide the shard key values into chunks, MongoDB uses _____ based partitioning.
Correct Answer is : range
17. With hash based partitioning, two documents with _____ shard key values are unlikely to be part of the same chunk.
Correct Answer is : close
18. _______ based partitioning, by contrast, ensures an even distribution of data at the expense of efficient range queries.
Correct Answer is : Range
19. MongoDB uses _________ to support deployments with very large data sets and high throughput operations.
Correct Answer is : sharding
20. Point out the correct statement:
Correct Answer is : High query rates can exhaust the CPU capacity of the server
