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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Monitoring, Performance and Troubleshooting | 10% | - Diagnostics and resolving common issues - Performance tuning and optimization - Monitoring tools and metrics |
| Topic 2: Sharding and Scalability | 10% | - Query routing and cluster operations - Shard keys, chunk management, balancing - Sharded cluster architecture |
| Topic 3: Security and Access Control | 15% | - Encryption, auditing, and security best practices - Role-based access control - Authentication mechanisms |
| Topic 4: Replication and High Availability | 15% | - Deployment and maintenance of replica sets - Failover, elections, read/write concern - Replica set architecture and components |
| Topic 5: MongoDB Architecture and Deployment | 20% | - Core concepts, JSON/BSON, data model - Storage engines and server management - Installation and configuration |
| Topic 6: Backup, Recovery and Maintenance | 10% | - Restore procedures and disaster recovery - Logical and physical backup methods - Data consistency and integrity checks |
| Topic 7: CRUD Operations and Indexing | 20% | - Create, Read, Update, Delete operations - Index types, creation, and management - Query optimization and aggregation |
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NEW QUESTION # 32
Which of the following commands will return all the posts with number of likes greater than 100 and less than
200, both inclusive?
Answer: C
NEW QUESTION # 33
Write the command(s) are correct to enable sharding on a database "testdb" and shard a collection "testCollection" with _id as shard key.
Answer:
Explanation:
sh.enableSharding("testdb") & sh.shardCollection("testdb.testCollection", {_id : 1 }, true )
NEW QUESTION # 34
Which is the default mode in which the explain() command runs?
Answer: A
NEW QUESTION # 35
What tool should be used to access and administer a MongoDB cluster?
Answer: D
Explanation:
mongosh, the MongoDB Shell, is the interactive command-line environment used to connect to MongoDB deployments and perform administrative and data operations. Through mongosh, a DBA can run CRUD queries, aggregation pipelines, user and role administration, replica-set commands, server diagnostics, index operations, and many other management tasks. mongod, option B, is the MongoDB database server process itself; it stores data and serves requests but is not the interactive administration client. mongostat, option C, is a monitoring utility that reports a concise stream of server activity metrics such as operation rates, memory, connections, and queue information. mongotop, option D, reports time spent reading and writing data by namespace and is likewise a diagnostic utility rather than a general administration shell. DBAs may also use MongoDB Compass, Atlas interfaces, Ops Manager, or automation tooling depending on the deployment, but among these four command-line tools, mongosh is the one intended for broad interactive access and administration. Therefore option A is correct.
Study Guide reference/topic:MongoDB Architecture and Core Operations - MongoDB Shell, administration tools, server processes, and monitoring utilities.
NEW QUESTION # 36
Which of the following is correct about MongoDB?
Answer: C
NEW QUESTION # 37
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