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| Section | Weight | Objectives |
|---|---|---|
| Sharding and Scalability | 10% | - Query routing and cluster operations - Shard keys, chunk management, balancing - Sharded cluster architecture |
| Backup, Recovery and Maintenance | 10% | - Data consistency and integrity checks - Restore procedures and disaster recovery - Logical and physical backup methods |
| Replication and High Availability | 15% | - Failover, elections, read/write concern - Replica set architecture and components - Deployment and maintenance of replica sets |
| MongoDB Architecture and Deployment | 20% | - Installation and configuration - Core concepts, JSON/BSON, data model - Storage engines and server management |
| Monitoring, Performance and Troubleshooting | 10% | - Diagnostics and resolving common issues - Monitoring tools and metrics - Performance tuning and optimization |
| Security and Access Control | 15% | - Encryption, auditing, and security best practices - Role-based access control - Authentication mechanisms |
| CRUD Operations and Indexing | 20% | - Index types, creation, and management - Query optimization and aggregation - Create, Read, Update, Delete operations |
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NEW QUESTION # 132
Consider the following documents:
You perform the following query;
How many documents will be updated by the query?
Answer: B
NEW QUESTION # 133
Which mongodb tool is used to report details on number of database operations in MongoDB?
Answer: D
NEW QUESTION # 134
A MongoDB database administrator is asked to add the privilege find to a role named myRole.
What is the correct syntax for adding this privilege to the role in MongoDB?
Answer: D
Explanation:
The grantPrivilegesToRole command requires privileges to be an array of privilege documents. Each privilege document must contain a resource document and an actions array. Option A uses exactly that structure: the resource targets testDB with an empty collection name, which represents the database-level collection scope used by MongoDB ' s privilege model, and the actions list contains " find " . Option B omits the required resource wrapper and incorrectly places db and collection directly in the privilege document. Option C supplies privileges as a single document rather than as the required array. Option D has the correct resource structure but supplies actions as a scalar string instead of an array. The find action grants the ability to perform supported read operations on the specified resource scope, subject to the role ' s other inherited privileges. The shown writeConcern and comment fields are legitimate command options and do not change the structural requirement. Consequently, option A is the only choice that conforms to MongoDB ' s documented privilege document format.
Study Guide reference/topic:Security, Networking, and Encryption - user-defined roles, privilege documents, resources, actions, and grantPrivilegesToRole.
NEW QUESTION # 135
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: A
NEW QUESTION # 136
Dada una coleccion, cuales devuelve con la siguiente query
db.coleccion.find({nombre:"ruben",apellido:"gomez"},{nombre:l,apellido:l,aficion:l});
Answer: A,C
NEW QUESTION # 137
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