Which collection method can you use to build the index?

How many indexes will the following command create?
db.products.createIndex( { product_name: 1, product_category: -1 } )

Which of the following commands will delete a collection named restaurants?

Suppose you have a movies collection with the following document structure: { _id: ObjectId("573a1390f29313caabcd60e4"), title: 'The Immigrant', fullplot: "Charlie is on his way to the USA. He wins in a card game, puts the money in Edna's bag (she and her sick mother have been robbed of everything). When he retrieves a little for himself he is accused of being a thief. Edna clears his name. Later, broke, Charlie finds a coin and goes into a restaurant." } You want to sort result set by a relevance score computed by MongoDB in text search query and extract only three documents with the highest score. Which query do you need to use?

How to display MongoDB configuration file from command line?