The MongoDB explain() method does not support which of the following verbosity mode:
Consider that you have a collection called population which has fields state and city. Which of the following query will calculate the population grouped by state and city?
Which of the following are valid json documents? Select all that apply.
Which of the tags in a replica set configuration specify the operations to be read from the node with the least network latency?
Which of the following operators is used to updated a document partially?
Which features of relational database management systems were deliberately omitted in MongoDB and help us to obtain horizontal scalability? Check all that apply.
What does the following query do when performed on the posts collection? db.posts.update({_id:l},{Title:This is post with ID 1"})
What tool do you use to see if you have a problem in the consumption of disk I / 0?
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?
Which of the following is supported by MongoDB?
TESTED 15 Sep 2025