Question

_________ tracks and reports the current read and write activity of a MongoDB instance, and reports these statistics on a per collection basis.

(a) mongostat

(b) mongod

(c) mongotop

(d) all of the mentioned

I have been asked this question in an online interview.

Asked question is from Monitoring for  MongoDB topic in chapter GridFS, BSON Datatype and Administration Concepts of MongoDB

Answer 1

The correct answer is (c) mongotop

For explanation I would say: Use mongotop to check if your database activity and use match your expectations.