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MCQs

Total Questions : 13 | Page 2 of 2 pages
Question 11. String expressions, with the exception of ________, only have a well-defined behavior for strings of ASCII characters.
  1.    $setcon
  2.    $concatenation
  3.    $concat
  4.    None of the mentioned
 Discuss Question
Answer: Option C. -> $concat


$concat behavior is well-defined regardless of the characters used.


Question 12. Which of the following returns the hour for a date as a number between 0 and 23 ?
  1.    $minute
  2.    $hour
  3.    $seconds
  4.    All of the mentioned
 Discuss Question
Answer: Option B. -> $hour


The argument in hour statement can be any expression as long as it resolves to a date.


Question 13. The output of the reduce function may pass through a ______ function to further condense or process the results of the aggregation.
  1.    finalize
  2.    filter
  3.    procedure
  4.    None of the mentioned
 Discuss Question
Answer: Option A. -> finalize


The input and the output collections may be sharded.


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