MongoDB Mock Test 3 - Sanfoundry

10%

Question 1 of 10

1. The GridFS index allows efficient retrieval of __________ using the files_id and n values.

chunks

files

bson

none of the mentioned

Question 1 of 10

Question 2 of 10

2. Point out the correct statement.

One-to-Many Relationships with embedded documents presents a data model that uses embedded documents to describe one-to-one relationships between connected data

One-to-One Relationships with document references presents a data model that uses embedded documents to describe one-to-one relationships between connected data

One-to-One Relationships with embedded documents presents a data model that uses embedded documents to describe one-to-one relationships between connected data

All of the mentioned

Question 2 of 10

Question 3 of 10

3. Which of the following pattern is more straightforward to use?

Array of Ancestors

None of the mentioned

Materialized Paths

Nested Sets

Question 3 of 10

Question 4 of 10

4. The ________ References pattern stores each tree node in a document; in addition to the tree node, the document stores the id of the node’s parent.

None of the mentioned

Child

Parent

Root

Question 4 of 10

Question 5 of 10

5. Which of the following data type is depreciated?

Object

String

Undefined

Double

Question 5 of 10

Question 6 of 10

6. The $rename operator logically performs a _______ of both the old name and the new name.

$set

$unset

None of the mentioned

$Nested

Question 6 of 10

Question 7 of 10

7. Point out the correct statement.

Journal must reside on the same logical volume as the other MongoDB data files

All of the mentioned

To get a consistent snapshot of a sharded system, you must disable the balancer

Backups produced by copying the underlying data do not support point in time recovery

Question 7 of 10

Question 8 of 10

8. ________ indexes can include any field whose value is a string or an array of string elements.

text

none of the mentioned

string

char

Question 8 of 10

Question 9 of 10

9. __________ returns the JavaScript representation in the form of a string literal.

none of the mentioned

toStringJava()

toString()

String()

Question 9 of 10

Question 10 of 10

10. Each document in the __________ collection represents a distinct chunk of a file as represented in the GridFS store.

none of the mentioned

chunks

bson

files

Question 10 of 10