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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.

MongoDB C100DBA Exam is a rigorous test that requires significant preparation. Candidates are expected to have a deep understanding of database administration concepts and be able to apply them to real-world scenarios. C100DBA exam consists of multiple-choice questions and is timed, with a time limit of 90 minutes. Candidates must score at least 65% to pass the exam.

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MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) Sample Questions (Q173-Q178):

NEW QUESTION # 173
What command returns all documents in an orders collection where quantity is less than or equal to 1000 and salesRep is not equal to " Anne " ?

A. db.orders.find({ " quantity " : { $lte: 1000 }, salesRep: { $neq: " Anne " } })
B. db.orders.find({ " quantity " : { $lt: 1000 }, salesRep: { $neq: " Anne " } })
C. db.orders.find({ " quantity " : { $lte: 1000 }, salesRep: { $ne: " Anne " } })
D. db.orders.find({ " quantity " : { $lt: 1000 }, salesRep: { $ne: " Anne " } })

Answer: C

Explanation:
The quantity condition is "less than or equal to 1000," which maps to MongoDB ' s $lte comparison operator.
The sales representative condition is "not equal to Anne," which maps to $ne. When predicates on two different fields appear in the same query document, MongoDB applies an implicit logical AND, so both conditions must be true for a document to match. Option C therefore expresses exactly the requested filter: { quantity: { $lte: 1000 }, salesRep: { $ne: " Anne " } }. Options A and D use $neq, which is not MongoDB ' s inequality operator. Options B and D use $lt, which excludes documents whose quantity is exactly 1000 and therefore fails the "less than or equal" requirement. One nuance of $ne is that it can also match documents where the field is missing, because a missing field is not equal to the specified value. If the application requires salesRep to exist as well, an explicit existence predicate may be appropriate. For the wording shown, however, option C is the correct command.
Study Guide reference/topic:MongoDB Architecture and Core Operations - comparison predicates, $lte, $ne, and implicit AND semantics.

NEW QUESTION # 174
JSON stands for

A. JavaScript Object Naming
B. JavaScript Object Notice
C. None of the above
D. JavaScript Object Notation

Answer: D

NEW QUESTION # 175
Given a replica set with five data-bearing members, suppose the primary goes down with operations in its oplog that have been copied from the primary to only one secondary. Assuming no other problems occur, which of the following describes what is most likely to happen?

A. reads will be stale until the primary comes back up
B. the most current secondary will roll back the operations following the election
C. the secondary with the most current oplog will be elected primary
D. the primary may roll back the operations once it recovers
E. missing operations will need to be manually re-performed

Answer: C

NEW QUESTION # 176
Which of the documents below will be retrieved by the following query? Assume the documents are stored in a collection called "sample". Check all that apply.
db.sample.find( { "$or" : [ { "a" : { "$in" : [ 3, 10] > }, { "b" : { "$lt" : 2 > > ] > )

A. {". Jd" : : 2, "a" : 2, "c" : : 0, "b" : 1}
B. {". Jd" : : 1, "a" : 0, "c" : : 0, "b" : 2}
C. { \ Jd" : 10,"a" : 3, "c" : 1, "b" : 1}
D. {". Jd" : : 5, "a" : 3, "c" : : 0, "b" : 12}
E. {''_ _id" : 3, "a" : 4, "c" : 0, "b" : 14}
F. {''_ Jd" : 7, "a" : 8, "c" : 1, "b" : 7}
G. {". Jd" : 6, "a" : 1, "c" : 1, "b" : 5}
H. { ''\ Jd" : 9, "a" : 17, "c" : 1, "b" : 1}
I. {". Jd" : : 4, "a" : 5, "c" : : 0, "b" : 17}
J. {". Jd" : : 8, "a" : 11, "c" : 1, "b" : 0}

Answer: A,C,D,H,J

NEW QUESTION # 177
Which of the following node is used during election in a replication cluster?

A. arbiter
B. secondary
C. hidden
D. primary

Answer: A

NEW QUESTION # 178
......

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