MongoDB Questions and Answers – Sharding Concepts

This set of MongoDB Multiple Choice Questions & Answers (MCQs) focuses on “Sharding Concepts”.

1. A sharded cluster can contain __________ query router to divide the client request load.
a) 1
b) 0
c) more than 1
d) all of the mentioned
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2. Point out the correct statement.
a) MongoDB distributes data, or shards, at the collection level
b) To shard a document, you need to select a shard key
c) MongoDB divides the shard key values into replica sets
d) All of the mentioned
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3. ________ servers store the cluster’s metadata.
a) Local
b) Config
c) Master
d) All of the mentioned
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4. The query router uses __________ to target operations to specific shards.
a) metadata
b) cluster
c) replica
d) all of the mentioned
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5. Point out the wrong statement.
a) For hash-based sharding, MongoDB divides the data set into ranges determined by the shard key values to provide hash based partitioning
b) Cloud-based providers may only allow users to provision smaller instances
c) For hash based partitioning, MongoDB computes a hash of a field’s value, and then uses these hashes to create chunks
d) All of the mentioned
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6. Production sharded clusters have exactly ______ config servers.
a) 1
b) 2
c) 3
d) 4
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7. A _________ key is either an indexed field or an indexed compound field that exists in every document in the collection.
a) cluster
b) shard
c) partition
d) all of the mentioned
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8. To divide the shard key values into chunks, MongoDB uses _____ based partitioning.
a) range
b) b tree
c) document
d) isMaster
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9. With hash based partitioning, two documents with _____ shard key values are unlikely to be part of the same chunk.
a) close
b) open
c) partially close
d) all of the mentioned
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10. _______ based partitioning, by contrast, ensures an even distribution of data at the expense of efficient range queries.
a) Hash
b) Range
c) Table
d) None of the mentioned
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Here’s the list of Best Books in MongoDB.