D. none of the mentioned
_____________ is used to initiate relica member set.
To generate pseudo-random data to use for a keyfile, issue the following __________ command.
GridFS uses a _________ index on the chunks collection for the files_id and n fields.
Which of the following query is used to generate a new ObjectId, use the ObjectId() constructor with no argument
If you create the user administrator before enabling access control, MongoDB disables the ________ exception.