Explanation:If MongoDB uses indexes for an $or expression, the result will include the OR stage with an inputStages array that details the indexes 6. If the query planner selects a collection scan, the explain result includes a _________ stage.
A. COLLSCAN
B. TABLESCAN
C. ROWSCAN
D. All of the mentioned
Answer:A
Explanation:If MongoDB uses indexes for an $or expression, the result will include the OR stage with an inputStages array that details the indexes 6. If the query planner selects a collection scan, the explain result includes a _________ stage.
A. COLLSCAN B. TABLESCAN C. ROWSCAN D. All of the mentioned
Explanation:The format and fields of the explain results have changed from previous versions. 7. Which of the following parameter specifies the verbosity mode for the explain output ?