MongoDB Mock Test 4 - Sanfoundry

10%

Question 1 of 10

1. With the WiredTiger storage engine, use of _______ is strongly recommended to avoid performance issues.

SST

SSD

XFS

All of the mentioned

Question 1 of 10

Question 2 of 10

2. The _______ migrates chunks of documents in a sharded collection to the shards associated with a tag.

all of the mentioned

balancer

compounder

fixer

Question 2 of 10

Question 3 of 10

3. Point out the wrong statement.

The default storage.wiredTiger.engineConfig.cacheSizeGB setting assumes that there is a single mongod instance per node

The storage.wiredTiger.indexConfig.prefixCompression setting does not affect all indexes created

None of the mentioned

Database profiling can impact database performance

Question 3 of 10

Question 4 of 10

4. You cannot use _________ to change the value of expireAfterSeconds of an existing index.

removeIndex()

createIndex()

dropIndex()

none of the mentioned

Question 4 of 10

Question 5 of 10

5. Backup can also create snapshots of _________ that are run as single-member replica sets.

backups

none of the mentioned

standalones

documents

Question 5 of 10

Question 6 of 10

6. Ops Manager reads directly from the Backup Blockstore database and transfers files either through ___________

HTTPS

TCP

All of the mentioned

MMS

Question 6 of 10

Question 7 of 10

7. If the indexed field in a document is not a _____ or an array that holds a date value(s), the document will not expire.

DATE

All of the mentioned

DATETIME

TIME

Question 7 of 10

Question 8 of 10

8. Point out the wrong statement.

None of the mentioned

Capped collections have maximum size or document counts that prevent them from growing beyond maximum thresholds

Queries need an index to return documents in insertion order

The options document creates a capped collection or preallocates space in a new ordinary collection

Question 8 of 10

Question 9 of 10

9. All read preference modes except _______ may return stale data.

primary

none of the mentioned

secondary

primaryPreferred

Question 9 of 10

Question 10 of 10

10. Point out the correct statement.

A special TTL index property supports the implementation of TTL collections

All of the mentioned

TTL collections make it possible to store data in MongoDB and have the mongod automatically remove data after a specified number of seconds or at a specific clock time

Data expiration is useful for some classes of information, including machine generated event data, logs, and session information

Question 10 of 10