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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: CRUD Operations and Indexing | 20% | - Index types, creation, and management - Create, Read, Update, Delete operations - Query optimization and aggregation |
| Topic 2: MongoDB Architecture and Deployment | 20% | - Core concepts, JSON/BSON, data model - Storage engines and server management - Installation and configuration |
| Topic 3: Security and Access Control | 15% | - Authentication mechanisms - Role-based access control - Encryption, auditing, and security best practices |
| Topic 4: Monitoring, Performance and Troubleshooting | 10% | - Monitoring tools and metrics - Performance tuning and optimization - Diagnostics and resolving common issues |
| Topic 5: Replication and High Availability | 15% | - Failover, elections, read/write concern - Replica set architecture and components - Deployment and maintenance of replica sets |
| Topic 6: Backup, Recovery and Maintenance | 10% | - Data consistency and integrity checks - Logical and physical backup methods - Restore procedures and disaster recovery |
| Topic 7: Sharding and Scalability | 10% | - Sharded cluster architecture - Query routing and cluster operations - Shard keys, chunk management, balancing |
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NEW QUESTION # 117
What does the following aggregate query perform?
Answer: A
NEW QUESTION # 118
In a sharded replica set environment, the w Option provides ability for write concern and j Option provides ability for the data to be written on disk journal. Consider that we have a seven member replica set and we want to assure that the writes are committed to journal. What should be the value of j?
Answer: B
NEW QUESTION # 119
Suposse tou have the following collection with only 2 documents:
If you run an aggregation query and use { $unwind: "$traits" } as the first stage, how many documents will be passed to the next stage of the aggregation pipeline?
Answer: E
NEW QUESTION # 120
Which of the following is a valid Replica Set configuration if you want:
1-Have 3 copies of everything
2- That RS3 is never primary
2- That RSI and RS2 can be primary?
You had to see the different configurations, RS3 could be hidden or priority 0 (But not a referee because we need
3 replicas), while RSI and RS2 could NOT have priority 0 or be hidden or anything like that In a 4-member RS RSO , RSI, RS2 and RS3 + Referee, RSO (primary) falls after some write operations that have replicated RSI and RS2 (but NOT RS3), who can get up as the new primary?
The configuration comes and in it we see that RS2 has a hidden: true (or a priority: 0, (I don't remember)
Answer: C
NEW QUESTION # 121
What are the audit log destinations? (Select three)
Answer: A,C,D
Explanation:
MongoDB Enterprise auditing supports three standard destination values for audit events: syslog, file, and console. With the syslog destination, audit records are sent to the operating system ' s syslog facility where supported. With the file destination, events are written to a configured audit log path, and administrators can control the output format according to the supported audit configuration. With the console destination, audit events are emitted to standard output, which can be useful in containerized or centrally collected logging environments. A raw TCP/IP port is not itself an auditLog.destination value. Organizations can certainly forward logs over the network using operating-system or observability tooling, but that transport is external to MongoDB ' s destination setting. A MongoDB database is likewise not one of the supported audit destinations; keeping audit evidence independent from the system being audited is also preferable for integrity and compliance. Auditing records security-relevant actions and can be filtered to meet regulatory or operational requirements. Therefore the three valid destinations among the choices are syslog, file, and console: A, B, and E.
Study Guide reference/topic:Security, Networking, and Encryption - auditing, auditLog.destination, compliance logging, and audit configuration.
NEW QUESTION # 122
......
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