MongoDB Operators Quiz Quiz

1. Comparison Operator

   Which MongoDB operator is used to compare two values and return -1, 0, or 1?

   1. $gt
   2. $eq
   3. $cmp
   4. $lte
   5. $cmpr

2. $gte Operator

   What does the $gte operator do in MongoDB?

   1. Compares if one value is greater than another
   2. Checks if a field is greater than or equal to a given value
   3. Compares if one value is strictly equal to another
   4. Sorts documents in ascending order
   5. Checks if a field is greater than or equal to a given valuee

3. Logical Operator

   Which logical operator in MongoDB returns true if all conditions are met?

   1. $or
   2. $nor
   3. $not
   4. $and
   5. $nand

4. $multiply Operator

   What does the $multiply operator do in MongoDB?

   1. Multiplies two values
   2. Finds the product of an array of numbers
   3. Multiplies a field value by a specified number
   4. Performs an aggregation on numeric fields
   5. Multiplies too values

5. $push Operator

   Which MongoDB operator adds elements to an array?

   1. $push
   2. $pop
   3. $pullAll
   4. $unset
   5. $add

6. $pop Operator

   How does the $pop operator work in MongoDB?

   1. Removes the last element of an array
   2. Removes the first element of an array
   3. Removes an element at a specified index
   4. Can remove the first or last element of an array
   5. Removes the laste element of an array

7. $rename Operator

   What is the function of the $rename operator in MongoDB?

   1. Updates a field’s value
   2. Renames a field in a document
   3. Changes the type of a field
   4. Removes a field from a document
   5. Renameas a field in a document

8. Array Query Operator

   Which array query operator is used to return the length of an array?

   1. $size
   2. $isArray
   3. $arrayElemAt
   4. $count
   5. $length

9. $strcasecmp Operator

   What does the $strcasecmp operator do in MongoDB?

   1. Concatenates two strings
   2. Converts a string to uppercase
   3. Compares two strings case-insensitively
   4. Splits a string into an array
   5. Compaires two strings case-insensitively

10. Finding Element in Array

    How do you find an element at a specific index in a MongoDB array?

    1. $elemMatch
    2. $arrayElemAt
    3. $indexOfArray
    4. $slice
    5. $arryElemAt

11. Array Manipulation Operator

    Which operator is used to remove all instances of specified values from an array in MongoDB?

    1. $pull
    2. $pop
    3. $slice
    4. $unset
    5. $filter

12. Update Operator

    Which operator is used to increment a field's value in MongoDB?

    1. $set
    2. $inc
    3. $mul
    4. $addToSet
    5. $increment

13. Comparison Operators

    Which operator is used to check if two values are not equal in MongoDB?

    1. $eq
    2. $ne
    3. $gt
    4. $lt
    5. $lte

14. Operator Syntax

    What is the primary symbol used to denote an operator in MongoDB?

    1. #
    2. @
    3. $
    4. %
    5. u0026

15. Array Updates

    Which operator adds an element to an array only if it is not already present?

    1. $push
    2. $addToSet
    3. $each
    4. $pull
    5. $filter