2023 Valid C100DBA Real Exam Questions, practice MongoDB Certified DBA Associate
Latest Success Metrics For Actual C100DBA Exam (Updated 123 Questions)
NEW QUESTION # 35
Which of the following are common uses of the mongo shell? Check all that apply
- A. Use as a JavaScript framework for your production system
- B. Perform administrative tasks
- C. Perform queries against MongoDB collections
Answer: B,C
NEW QUESTION # 36
Which of the following operator can be used to control the number of items of an array that a query returns?
- A. $
- B. MongoDB does not support partial retrieval of items from an array
- C. $slice
- D. $ elemMatch
Answer: C
NEW QUESTION # 37
Which of the following commands can cause the database to be locked?
- A. All of the above
- B. Map-reduce
- C. Inserting data
- D. Issuing a query
Answer: A
NEW QUESTION # 38
Which node in a replica set does accept write operation?
- A. primary
- B. arbiter
- C. secondary
- D. hidden
Answer: A
NEW QUESTION # 39
We can insert multiple documents in bulk using which of the following operations:
- A. initializeUnorderedBulkOp
- B. initializeBulk
- C. initializeUnorderedBulk
- D. initializeBulkOp
Answer: A
NEW QUESTION # 40
Which type of indexes does MongoDB support?
- A. All of the above
- B. Multikey Indexes
- C. Compound Indexes
- D. Geospatial Indexes
Answer: A
NEW QUESTION # 41
What is the equivalent command in MongoDB for the following SQL query?
SELECT * FROM posts WHERE author like "%john%"
- A. db.posts.find( { author: /AjohnA/ > )
- B. db.posts.find( { author: /John/ } )
- C. db.posts.find( { author: {$like: /John/} } )
- D. db.posts.find( { $like: {author: /John/} } )
Answer: B
NEW QUESTION # 42
Which of the following is true of the mechanics of replication in MongoDB? Check all that apply.
- A. Clients read from the nearest member of a replica ser by default
- B. Operations on the primary are recorded in a capped collection called the oplog
- C. Members of a replica set may replicate data from any other data-bearing member of the set by default
Answer: B
NEW QUESTION # 43
If you have created a compound index on (A,B, C) which of the following access pattern will not be able to utilize the index?
- A. A
- B. B, C
- C. A, B
- D. A, B, C
Answer: B
NEW QUESTION # 44
JSON stands for
- A. JavaScript Object Naming
- B. JavaScript Object Notation
- C. None of the above
- D. JavaScript Object Notice
Answer: B
NEW QUESTION # 45
What is the replication factor for a replicated cluster with 1 primary, 3 secondaries with one of them hidden.
The set also has an arbiter?
- A. 0
- B. None of the above
- C. 1
- D. 2
Answer: A
NEW QUESTION # 46
In what format does mongodump creates backup files?
- A. SOAP
- B. BSON
- C. XML
- D. JSON
Answer: B
NEW QUESTION # 47
Which of the following operator can be used to limit the number of documents in an array field of a document after an update is performed?
- A. $push along with $each, $sort and $slice
- B. $arrayLimit
- C. $removeFromSet
- D. None of the above
Answer: A
NEW QUESTION # 48
If the value of totalKeysExamined is 30000 and the value of totalDocsExamined is 0, which of the following option is correct?
- A. The query returned 30000 documents after scanning the documents
- B. The query used an index to fetch the results
- C. None of the above
- D. The query returned 0 documents
Answer: B
NEW QUESTION # 49
What is the output of the following program?
- A. 100 ms
- B. 1s
- C. 60 s
- D. 100 s
Answer: C
NEW QUESTION # 50
You perform the following query on the sayings collection, which has the index
{ quote : "text" }:
Assuming the documents below are in the collection, which ones will the following query return? Check all that apply.
db.sayings.find( { $text : { $search : "fact find" } } )
- A. { _id : 3, quote : "Nobody will ever catch me." }
- B. { _id : 1, quote : "That's a fact, Jack." }
- C. { _id : 2, quote : "Find out if that fact is correct." }
Answer: B,C
NEW QUESTION # 51
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What Needs to Be Done Before Confronting this Exam
The best-suited approach to preparing for this exam is through both multiple-choice and programming questions. So if you prepare by only taking the exams, you will find it easier to pass. However, since the MongoDB C100DBA exam really requires knowledge of MongoDB's official documentation, reading prior materials is absolutely necessary. If you are not very familiar with MongoDB or do not have much knowledge of it, then I would recommend that you spend time practicing taking multiple-choice exams online before attempting the actual exam. Real exam simulation on a website is the best way to pass the test because those websites have been made to test exactly what the actual exams will be like. By using these practice exams, you will have all of your questions answered and you can be better prepared for when it is your time to take the exam. Real exam simulation is highly recommended.
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