Which statement best describes the query below? db.col1.findAndModify({ query: {"name": "val1"}, update: { $inc: { "subObj.field1": 1 } });

The code below is used to try to delete a collection in the mongo shell: db.my-collection.drop() Choose the best statement that best describes why the code fails to delete the collection.

MongoDB is a process collection of documents using (...) operations

Which calls will set a 1 second limit for processing operations?

Which help analyze a query?

Which command will return all the posts with a number of likes greater than 100 and less than 200, including the limit values ?

A query fails to return a complete result set on a sharded cluster. Choose the most probable reason

_____ interface with client applications and direct operations to the appropriate shard or shards.

Which is true about sharding?

Choose the best commands to clone a collection to a sharded cluster from a developer machine.

What do you mean by sharding?