C100DBA Exam Questions & Answers

Consider the following documents:

You perform the following query;

How many documents will be updated by the query?

In what format does mongodump creates backup files?

Aggregation Pipelines have a limit of:

The oplog (operations log) is a special capped collection that keeps a rolling record of all operations that modify the data stored in your databases. All the replica set members contain a copy of the oplog in the following collection:

In a collection that contains 100 post documents, what does the following command do? db. posts. find().skip(5).limit(5)