Latest Released MongoDB C100DBA Latest Test Preparation - C100DBA MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4)

BONUS!!! Download part of ExamCost C100DBA dumps for free: https://drive.google.com/open?id=1IjwnvxeL1ZGBE08Poh-7hcKHZLZp0-tM

ExamCost.com won a good reputation by these candidates that have passed MongoDB C100DBA certification exam. ExamCost gets approve from the people with its powerful exam dumps. As long as you choose our dumps as review tool before the exam, you will have a happy result in C100DBA Exam, which is perfectly obvious. Now hurry to download free demo, you will believe your choice can't be wrong.

MongoDB C100DBA Exam Overview:

Certification Vendor:	MongoDB
Exam Name:	MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4)
Exam Number:	C100DBA
Exam Price:	$150 USD
Real Exam Qty:	60-66
Available Languages:	English
Exam Format:	Multiple Choice, Multiple Response
Passing Score:	490/600
Related Certifications:	MongoDB Certified Developer Associate
Certificate Validity Period:	Not officially specified
Exam Duration:	90 minutes
Sample Questions:	MongoDB C100DBA Sample Questions
Exam Way:	Online proctored or authorized testing center
Pre Condition:	Recommended knowledge of fundamental database concepts, basic system administration, and basic JavaScript. No mandatory prerequisite exam.
Official Syllabus URL:	https://learn.mongodb.com/pages/mongodb-associate-database-administrator-exam

>> C100DBA Latest Test Preparation <<

Free PDF MongoDB - C100DBA - MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) –Valid Latest Test Preparation

There are some prominent features that are making the MongoDB C100DBA exam dumps the first choice of C100DBA certification exam candidates. The prominent features are real and verified C100DBA exam questions, availability of MongoDB C100DBA exam dumps in three different formats, affordable price, 1 year free updated C100DBA Exam Questions download facility, and 100 percent MongoDB C100DBA exam passing money back guarantee. We are quite confident that all these C100DBA exam dumps feature you will not find anywhere.

MongoDB C100DBA certification exam consists of 60 multiple-choice questions that need to be completed within 90 minutes. C100DBA exam is available in English, Chinese, Japanese, and Korean languages. C100DBA exam can be taken online, and the candidate can schedule the exam at a time and date that is convenient for them. C100DBA Exam Fee is $150, and the candidate needs to achieve a minimum score of 65% to pass the exam.

MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) Sample Questions (Q31-Q36):

NEW QUESTION # 31
What does the following aggregate query perform?

A. Calculates the number of posts with likes between 100 and 200
B. Fetches the posts with likes between 100 and 200 and sets their _id as null
C. Groups the posts by number of likes (101, 102, 103.) by adding 1 every time
D. Fetches the posts with likes between 100 and 200, sets the _id of the first document as null and then increments it 1 every time

Answer: A

NEW QUESTION # 32
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 # 33
Which format/standard is used by MongoDB internally to store documents?

A. B+ Trees
B. JSON
C. BSON
D. JSON - Extended

Answer: B

NEW QUESTION # 34
What " stage " indicates that no indexes were available for a query pattern?

A. FETCH
B. GROUP
C. COLLSCAN
D. IXSCAN

Answer: C

Explanation:
In MongoDB explain output, a COLLSCAN stage means the winning plan is scanning documents in the collection rather than traversing a suitable index. This is the clearest indicator that the query is not being serviced by a normal index scan for the relevant predicate. By contrast, IXSCAN explicitly indicates an index scan and typically includes details such as the index key pattern, direction, and bounds. A FETCH stage represents retrieval of full documents, often after an index has already identified candidate record locations; its presence does not imply that no index was used. GROUP relates to grouping behavior and is not the stage used to identify missing index support. A collection scan is not automatically wrong: for tiny collections or queries that return most documents, it can be efficient. However, on large collections with selective predicates, repeated COLLSCAN plans are a strong signal that the DBA should evaluate indexing.
Administrators should compare totalDocsExamined, totalKeysExamined, execution time, and the winning
/rejected plans before deciding to add an index. For the terminology tested by the question, COLLSCAN is the correct stage, so C is correct.
Study Guide reference/topic:Indexing and Query Optimization - explain plans, COLLSCAN, IXSCAN, and missing index diagnostics.

NEW QUESTION # 35
Consider the following example document:
{
"_id": Objectld("5360c0a0a655a60674680bbe"),
"user"
"login": "irOn"
"description": "Made of steel"
"date": ISODate("2014-04-30T09:16:45.836Z"),
}
>
and index creation command:
db.users.createlndex( { "user.login": 1, "user.date": -1 }, "mylndex" ) When performing the following query:
db.users.find( { "user.login": /Air.*/ },
{ "user":1, "_id":0 > ).sort( { "user.date":1 > )
which of the following statements correctly describe how MongoDB will handle the query? Check all that apply.

A. None of the above
B. MongoDB will need to do a table/collection scan to find matching documents
C. As an optimized sort query (scanAndOrder = false) using "mylndex" because we are sorting on an indexed field
D. As a covered query using "mylndex" because we are filtering out "_id" and only returning "user.login"
E. As an indexed query using "mylndex" because field "user.login" is indexed

Answer: E

NEW QUESTION # 36
......

Reliable C100DBA Test Objectives: https://www.examcost.com/C100DBA-practice-exam.html

P.S. Free & New C100DBA dumps are available on Google Drive shared by ExamCost: https://drive.google.com/open?id=1IjwnvxeL1ZGBE08Poh-7hcKHZLZp0-tM