Q. Point out the correct statement.

View solution

Q. The ________ message is used to update a document in a collection.

View solution

Q. ___________ is used to determine whether a query is a covered query.

View solution

Q. Point out the wrong statement.

View solution

Q. Indexes are typically available in ______ or located sequentially on disk.

View solution

Q. With a receipt acknowledged write concern, the _________confirms that it received the write operation and applied the change to the in-memory view of data.

View solution

Q. With an __________ write concern, MongoDB does not acknowledge the receipt of write operations.

View solution

Q. MongoDB does not ___________ modifications made before the wtimeout interval expired.

View solution

Q. Clients can set a __________ value as part of a replica acknowledged write concern.

View solution

Q. _____________ is used to control mongod commits in the journal.

View solution

Q. Point out the wrong statement.

View solution

Q. The mongo shell and the MongoDB drivers use __________ as the default write concern.

View solution

Q. When inserts, updates and deletes have a _________ write concern, write operations return quickly.

View solution

Q. Point out the correct statement.

View solution

Q. ___________ concern describes the guarantee that MongoDB provides when reporting on the success of a write operation.

View solution

Q. An index cannot cover a query on a _______ collection when run against a mongos if the index does not contain the shard key.

View solution

Q. Which of the following operator is not very selective?

View solution

Q. ____________ is a client or database-generated identifier that uniquely identifies this message.

View solution

Q. The __________ method returns a document that includes a metrics field.

View solution

Q. ______________ specifies the number of documents to return in each batch of the response from the MongoDB instance.

View solution