MongoDB Mock Test 10

10%

Question 1 of 10

1. Hashed shard keys use a ________ index of a single field as the shard key to partition data across your sharded cluster.

hashed

unique

multkikey

all of the mentioned

Question 1 of 10

Question 2 of 10

2. Point out the correct statement.

Pre-splitting the chunk ranges in an empty sharded collection allows clients to insert data into an already partitioned collection

Chunk migration does not require copying all the data in the chunk from one shard to another

MongoDB cannot create enough chunks or distribute data fast enough to support required throughput

All of the mentioned

Question 2 of 10

Question 3 of 10

3. The chunkSize and ________ options, passed at startup to the mongos, do not affect the chunk size after you have initialized the cluster.

--chunk

None of the mentioned

--Size

--chunkSize

Question 3 of 10

Question 4 of 10

4. For most deployments, the default value of chunk is _____ megabytes is ideal.

Question 4 of 10

Question 5 of 10

5. Use ________ to determine the current chunk ranges across the cluster.

sh.results()

sh.status()

sh.collects()

all of the mentioned

Question 5 of 10

Question 6 of 10

6. Which of the following command is used to determine split points?

movePrimary

medianKey

splitVector

none of the mentioned

Question 6 of 10

Question 7 of 10

7. _________ is used to remove tags from a particular shard.

sh.removeShard()

sh.removeTag()

sh.removeShardTag()

all of the mentioned

Question 7 of 10

Question 8 of 10

8. _________ splits a chunk at the shard key value specified by the query.

sh.splitFind()

sh.splitAt

sh.Find()

sh.split()

Question 8 of 10

Question 9 of 10

9. The mongos provides an interface for applications to interact with sharded clusters that hides the complexity of data ______

partitioning

none of the mentioned

replication

sharding

Question 9 of 10

Question 10 of 10

10. To provide high availability and data consistency, in a production sharded cluster, each shard is a ___________

cluster

all of the mentioned

partition

replica set

Question 10 of 10