MongoDB MCQ Questions - Datatypes

This section focuses on "Datatypes" in MongoDB. These Multiple Choice Questions (MCQs) should be practiced to improve the MongoDB skills required for various interviews (campus interview, walk-in interview, company interview), placements, entrance exams and other competitive examinations.

1. _______ in MongoDB must be UTF-8 valid.

A. Integer
B. String
C. Boolean
D. Double

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2. Integer ________ bit depending upon your server.

A. 16
B. 32
C. 64
D. Both B and C

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3. Which type is used to store a true/ false value.

A. Enum
B. Object
C. Boolean
D. Symbol

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4. Double type is used to store floating point values.

A. Yes
B. No
C. Can be yes or no
D. Can not say

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5. Min/ Max keys type is used to compare a value against the _____ BSON elements.

A. lowest
B. highest
C. lowest and highest
D. All of the above

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6. Arrays type is used to store ________ into one key.

A. arrays
B. list
C. multiple values
D. All of the above

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7. Which datatype is used to store binary data?

A. Code
B. Regular expression
C. Binary data
D. Object ID

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8. Regular expression datatype is used to store regular expression.

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

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9. Null type is used to store a Null value.

A. Yes
B. No
C. Can be yes or no
D. Can not say

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10. Which datatype is used to store the current date or time in UNIX time format?

A. Timestamp
B. Date
C. Symbol
D. Null

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