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Upon passing the MongoDB C100DBA certification exam, individuals will receive a digital badge that can be used to showcase their achievement and expertise in MongoDB database administration. MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) certification is recognized globally and demonstrates to employers and clients that the individual possesses the skills and knowledge required to manage MongoDB databases effectively.
The C100DBA certification exam is based on the latest version of MongoDB, version 4.4. It covers a wide range of topics related to database administration, including installation and configuration, performance optimization, security, backup and recovery, and data modeling. C100DBA Exam is designed to test the skills and knowledge of professionals who work with MongoDB databases on a daily basis and are responsible for ensuring that they are running smoothly and efficiently.
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MongoDB C100DBA Exam consists of 60 multiple-choice questions and has a time limit of 90 minutes. Candidates must achieve a score of at least 65% to pass the exam and earn the MongoDB Certified DBA Associate certification. C100DBA exam is delivered online and can be taken from anywhere in the world. Candidates who pass the exam can demonstrate to potential employers that they have the skills and knowledge required to manage MongoDB databases effectively.
NEW QUESTION # 97
What method should be used to configure dynamically runtime parameters for the mongod process in MongoDB?
Answer: B
Explanation:
MongoDB exposes server parameters that can be configured through the parameter framework. Among the choices, --setParameter is the option specifically designed to set a server parameter on the mongod command line, using syntax such as mongod --setParameter < name > = < value > . A configuration file can also contain a setParameter section, but --config by itself merely tells mongod which configuration file to load; it is not the parameter-setting mechanism identified by the question. Connection-string options control how clients connect and cannot be used to configure arbitrary server runtime parameters. Option D is also incorrect because the server must already be running for mongosh to issue administrative commands. A technical nuance is important: parameters that support modification while the process is already running are changed with the administrative setParameter command, for example db.adminCommand({setParameter:1, ...}). Such runtime changes may not persist across a restart unless the value is also configured for startup. Given the options provided and the exam wording, --setParameter is the intended method, so A is correct.
Study Guide reference/topic:MongoDB Architecture and Core Operations - server parameters, --setParameter, configuration files, and runtime administration.
NEW QUESTION # 98
Dada una coleccion, cuales devuelve con la siguiente query db.coleccion.find({nombre:"ruben",apellido:"gomez"},{nombre:l,apellido:l,aficion:l});
Answer: A,B
NEW QUESTION # 99
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 # 100
Consider the following posts document:
Which of the following queries will return the documents but with only the first two tags in the tags array?
Answer: B
NEW QUESTION # 101
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 # 102
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