90+ Mongodb Questions - Set 9 [With Solutions]

Qn. Sets

Mongodb Questions Set 9:

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Mongodb Questions

Set 9/10

__________ provides statistics on the per-collection level.

mongosniff

mongooplog

mongotop

mongofiles

Which of the following MongoDB collections is capped?

system.index

system.replica

system.profile

All of the mentioned

Object_Id in MongoDB is similar to which key in Relational Databases?

All of the mentioned

primary key

secondary key

composite key

Which of the following MongoDB aggregation pipeline stages can be used to implement field-level redaction?

$skip

$redact

$limit

$match

Which of the following read preference modes should not be used to provide extra capacity for reads?

primary

primaryPreferred

secondary

None of the mentioned

The __________ JavaScript shell and the MongoDB language drivers translate between BSON and the language-specific document representation.

mongod

mongo

json

none of the above

Which of the following statements about MongoDB query results is correct?

Intervening read operations on a document may result in a cursor that returns a document more than once if that document has changed.

None of the above.

The MongoDB server returns the query results in batches.

Subsequent batch size is 50 megabytes.

Which of the following statements is correct?

Applications that handle monetary data often require capturing fractional units of currency

Applications that handle time data often require capturing fractional units of currency

Applications that handle temporal and spatial data often require capturing fractional units of currency

All of the above

Point out the wrong statement.

If you need to query the database for exact, mathematically valid matches, use Exact Precision

If you regularly need to perform server-side arithmetic on monetary data, the exact precision model may be appropriate

If you need to query the database for exact, mathematically valid matches, use Ambiguity Precision

None of the above

Which statement about MongoDB sharding is incorrect?

When a query does not include a shard key, the mongos can use cluster metadata from the config database to route the queries to shards

On larger clusters, scatter gather queries are unfeasible for routine operations

Replica sets use read preferences to determine where and how to route read operations to members of the replica set

None of the above

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Qn. Sets

Mongodb Questions Set 9:

Mongodb Questions

__________ provides statistics on the per-collection level.

Reveal Answer

Reveal Answer

Which of the following MongoDB collections is capped?

Reveal Answer

Reveal Answer

Object_Id in MongoDB is similar to which key in Relational Databases?

Reveal Answer

Reveal Answer

Which of the following MongoDB aggregation pipeline stages can be used to implement field-level redaction?

Reveal Answer

Reveal Answer

Which of the following read preference modes should not be used to provide extra capacity for reads?

Reveal Answer

Reveal Answer

The __________ JavaScript shell and the MongoDB language drivers translate between BSON and the language-specific document representation.

Reveal Answer

Reveal Answer

Which of the following statements about MongoDB query results is correct?

Reveal Answer

Reveal Answer

Which of the following statements is correct?

Reveal Answer

Reveal Answer

Point out the wrong statement.

Reveal Answer

Reveal Answer

Which statement about MongoDB sharding is incorrect?

Reveal Answer

Reveal Answer

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