The MongoDB explain() method does not support which of the following verbosity mode:
Answer(s): A
Consider a collection posts which has fields: Jd, post_text, post_author, post_timestamp, post_tags etc. Which of the following query retrieves ONLY the key named post_text from the first document retrieved?
In a sharded replica set environment, the w Option provides ability for write concern and j Option provides ability for the data to be written on disk journal. Consider that we have a seven member replica set and we want to assure that the writes are committed to journal.What should be the value of j?
Answer(s): B
Aggregation Pipelines have a limit of:
What is the maximum size of a MongoDB document?
Answer(s): D
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