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| Certification Vendor: | MongoDB |
|---|---|
| Exam Name: | MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) |
| Exam Number: | C100DBA |
| Exam Format: | Scenario-based questions, Multiple choice, Multiple select |
| Available Languages: | English |
| Exam Duration: | 90 minutes |
| Exam Price: | $150 USD |
| Passing Score: | 65% |
| Related Certifications: | MongoDB Certified Professional DBA MongoDB Certified Developer Associate |
| Real Exam Qty: | 60-66 |
| Certificate Validity Period: | 3 years |
| Recommended Training: | M001: MongoDB Basics M310: MongoDB Security M201: MongoDB Performance M103: Basic Cluster Administration |
| Exam Registration: | MongoDB University Certification Portal |
| Sample Questions: | MongoDB C100DBA Sample Questions |
| Exam Way: | Online proctored exam, taken remotely via secure browser |
| Pre Condition: | No mandatory prerequisites; basic knowledge of MongoDB and database administration recommended |
| Official Syllabus URL: | https://learn.mongodb.com/pages/mongodb-associate-database-administrator-exam |
>> Detailed C100DBA Study Plan <<
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The C100DBA certification is essential for individuals who want to pursue a career as a MongoDB DBA. MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) certification validates your skills and knowledge in managing MongoDB databases, which is a critical skill in today's data-driven world. MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) certification also enhances your resume and makes you stand out from other candidates in the job market. Many organizations worldwide recognize the MongoDB certification, and some even require it for job positions.
This certification exam can be taken at the test center or online.
NEW QUESTION # 74
'$set' sets the value of
Answer: C
NEW QUESTION # 75
A MongoDB administrator needs to create a new role with only the read privileges for the products database.
What command should the administrator use?
Answer: D
Explanation:
MongoDB custom roles are defined in terms of privileges, and each privilege specifies a resource plus one or more allowed actions. For read/query access, find is a valid privilege action. To represent all normal collections in a specified database, MongoDB uses a resource document with the target database and an empty collection name, for example { db: " products " , collection: " " }. Option B therefore combines the correct resource scope with the find action and does not grant write capability. The distractors confuse built-in role names with privilege actions. read, readWrite, and readAnyDatabase are built-in roles or role concepts, not the appropriate action values for the privileges[].actions list shown here. Likewise, a literal " * " collection value is not the documented database-wide resource form for this custom privilege. In practice, an administrator could also assign MongoDB ' s built-in read role rather than creating a custom role if its permissions exactly match the requirement. Given the specific createRole() choices, however, option B is the technically correct construction.
Study Guide reference/topic:Security, Networking, and Encryption - RBAC, custom roles, resources, and privilege actions.
NEW QUESTION # 76
In a collection that contains 100 post documents, what does the following command do? db. posts.
find().skip(5).limit(5)
Answer: A
NEW QUESTION # 77
Which TWO commands can be used to check for all active operations on the current node?
Answer: B,E
Explanation:
db.currentOp() is the mongosh helper used to inspect operations currently executing on a MongoDB server.
Passing true requests a broad view that includes all in-progress operations as well as additional idle/system entries, so it can be used when the administrator wants to see the complete current-operation picture. The database-command form, db.adminCommand({ currentOp: true }), invokes the corresponding administrative command and is also valid for obtaining in-progress operation information. Option A adds a filter restricting the result to operations whose op field is " command " ; it therefore does not represent all operation types.
Option B is not valid currentOp command syntax, and option E uses an all field that is not the documented special form for this helper. In modern MongoDB administration, the $currentOp aggregation stage is generally preferred for richer filtering and aggregation, but the question is testing the traditional helper and command interfaces. Therefore, C and D are the two valid choices among those presented.
Study Guide reference/topic:Performance Monitoring and Tuning - current operations, currentOp, and administrative diagnostics.
NEW QUESTION # 78
In a replica set, which member is responsible for maintaining copies of the primary ' s data?
Answer: B
Explanation:
A replica-set secondary maintains a replicated copy of the primary ' s dataset. The primary records data- changing operations in its oplog, and secondary members continuously copy and apply those oplog entries asynchronously to keep their data synchronized. This redundancy allows an eligible secondary to participate in an election and potentially become primary if the current primary becomes unavailable. mongos, option B, is the query-routing process used in a sharded cluster; it does not store an application dataset copy. An arbiter, option C, participates in replica-set voting and elections but deliberately does not maintain a copy of the database data. A shard, option D, is a data partition in a sharded cluster and is normally implemented as a replica set in production, but "shard" is not the replica-set member role that replicates the primary ' s data.
Secondary behavior is central to MongoDB high availability, read-scaling options, backup strategies, and failover. Administrators monitor secondary replication lag and health to ensure the copies remain sufficiently current. Therefore the member responsible for maintaining copies of the primary ' s data is the secondary, making option A correct.
Study Guide reference/topic:Cluster Reliability and Data Resilience - replica-set primaries, secondaries, oplog replication, and redundancy.
NEW QUESTION # 79
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