How do you perform a physical backup in MongoDB?
What is the difference between a snapshot and a backup in MongoDB?
How do you use the explain() method in MongoDB to optimize a query?
How do you use the $lookup operator to join two collections in MongoDB?
How do you use the $project operator to include or exclude fields in a query result in MongoDB?
How do you use the $unwind operator to deconstruct an array field in a document in MongoDB?
How do you use the $out operator to store the result of an aggregation operation in a new collection in MongoDB?
How do you use the $facet operator to perform multiple aggregation operations in a single query in MongoDB?
How do you use the $addFields operator to add a new field to documents in a collection in MongoDB?
How do you use the $sample operator to retrieve a random sample of documents from a collection in MongoDB?
How do you use the $group operator to calculate the sum of a field in a collection in MongoDB?
How do you use the $switch operator to perform conditional operations in the aggregation pipeline in MongoDB?
How do you use the $lookup operator to perform a left outer join between two collections in MongoDB?
How do you use the $out operator to write the result of an aggregation operation to a file in MongoDB?
How do you implement global replication and fault tolerance using MongoDB Atlas and Multi-Region Clusters?