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| Section | Objectives |
|---|---|
| Topic 1: MongoDB CRUD Operations | - Working with documents and BSON types - Insert, update, and delete operations - Querying and filtering documents |
| Topic 2: Backup, Restore, and Operations | - Backup strategies and tools - Monitoring and maintenance - Restore procedures |
| Topic 3: Aggregation Framework | - Data transformation and grouping - Aggregation operators - Aggregation pipeline stages |
| Topic 4: Sharding and Scalability | - Shard keys and distribution strategy - Sharded cluster architecture - Balancing and scaling operations |
| Topic 5: Indexing and Performance Tuning | - Explain plans and diagnostics - Index types and usage - Query performance optimization |
| Topic 6: Security | - Authentication and authorization - Encryption at rest and in transit - Role-based access control (RBAC) |
| Topic 7: Data Modeling | - Schema design principles - Relationships in MongoDB - Embedding vs referencing |
| Topic 8: Replication and High Availability | - Failover and elections - Read/write concerns - Replica set architecture |
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NEW QUESTION # 46
The following aggregation option is used to specify the specific fields that needs to be passed to the next stage of the aggregation pipeline:
Answer: A
NEW QUESTION # 47
What is the replication factor for a replicated cluster with 1 primary, 3 secondaries with one of them hidden. The set also has an arbiter?
Answer: D
NEW QUESTION # 48
Which of the documents below will be retrieved by the following query? Assume the documents are stored in a collection called " sample " . Check all that apply.
db.sample.find( { " $or " : [ { " a " : { " $in " : [ 3, 10] > }, { " b " : { " $lt " : 2 > > ] > )
Answer: C,F,G,H,J
NEW QUESTION # 49
Consider that the posts collection contains an array called ratings which contains ratings given to the post by various users in the following format:
Which of the following query will return all the documents where the ratings array contains elements that in some combination satisfy the query conditions?
Answer: A
NEW QUESTION # 50
You are comparing values of different BSON types in mongodb. You want to compare from lowest to highest. Which comparison order is used?
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