MongoDB Mock Test 10

10%

Question 1 of 10

1. With hash based partitioning, two documents with _____ shard key values are unlikely to be part of the same chunk.

all of the mentioned

partially close

open

Question 1 of 10

Question 2 of 10

2. You can only issue listShards against the ________ database.

local

temp

admin

none of the mentioned

Question 2 of 10

Question 3 of 10

3. Point out the correct statement.

Hashed keys work well with ObjectId values only

Hashed keys do not work well with fields that increase monotonically like ObjectId values or timestamps

All of the mentioned

If you shard an empty collection using a hashed shard key, MongoDB will automatically create and migrate chunks so that each shard has two chunks

Question 3 of 10

Question 4 of 10

4. The mergeChunks command requires at least _______ empty input chunk.

two

three

all of the mentioned

one

Question 4 of 10

Question 5 of 10

5. With __________ enabled, the source shard archives the documents in the migrated chunks in a directory named after the collection namespace.

sharding.archiveChunks

sharding.archiveMovedChunks

shard.archiveMovedChunks

none of the mentioned

Question 5 of 10

Question 6 of 10

6. _________ is a background process that keeps chunks from growing too large.

Splitting

All of the mentioned

Balancing

Chunking

Question 6 of 10

Question 7 of 10

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

sh.splitFind()

sh.splitAt

sh.split()

sh.Find()

Question 7 of 10

Question 8 of 10

8. ________ returns a boolean to report if the balancer is currently enabled.

sh.enableBalancing()

sh.getBalancerHost()

sh.getBalancerState()

none of the mentioned

Question 8 of 10

Question 9 of 10

9. MongoDB automatically computes the hashes when resolving queries using ______ indexes.

unique

muiltkey

all of the mentioned

hashed

Question 9 of 10

Question 10 of 10

10. Point out the correct statement.

If you use a compound shard key, you cannot enforce uniqueness on the combination of component keys in the shard key

MongoDB support creating new unique indexes in sharded collections

All of the mentioned

The unique constraint on indexes ensures that only one document can have a value for a field in a collection

Question 10 of 10