MongoDB C100DBA日常練習試験は2023年最新のに更新された123問あります
有効問題を試そう！C100DBA試験で実際の試験問題と解答
MongoDB C100DBA認定試験に合格すると、個人は自分の成果とMongoDBデータベース管理の専門知識を示すために使用できるデジタルバッジを受け取ります。この認定は、世界的に認知され、個人がMongoDBデータベースを効果的に管理するために必要なスキルと知識を持っていることを雇用主やクライアントに示します。
C100DBA試験の準備には、MongoDBが試験学習ガイド、オンラインコース、練習問題など、多様なリソースを提供しています。試験学習ガイドには、試験に含まれる全てのトピックをカバーし、サンプル問題と回答が提供されています。MongoDB Universityでは、MongoDB基礎、MongoDB DBA、MongoDB開発者向けなど、試験に含まれるトピックをカバーするオンラインコースがいくつか提供されています。MongoDBはまた、練習問題を提供し、実際の試験に対する準備状況を評価するのに役立ちます。
質問 # 35
Which of the following commands can cause the database to be locked?
- A. Map-reduce
- B. Issuing a query
- C. All of the above
- D. Inserting data
正解：C
質問 # 36
By default, the MongoDB cursor in mongo shell is configured to return how many documents? To get the next set of documents, which command is used?
- A. 20, it
- B. 200, more
- C. 50, it
- D. No limit, none
正解：A
質問 # 37
Which of the following is incorrect statement about find and findOne operations in MongoDB?
- A. findQ returns all the documents in a collection while findOne() retrieves only the first one.
- B. findOneQ returns the actual first document retrieved from a collection
- C. findQ and findOneQ returns cursors to the collection documents
- D. find.limit(l) is not the same query as findOne()
正解：C
質問 # 38
What is the on-premise solution having functionality equivalent to cloud manager?
- A. Journaling
- B. Service Manager
- C. Replica Manager
- D. Ops Manager
正解：D
質問 # 39
Which format/standard is used by MongoDB internally to store documents?
- A. JSON - Extended
- B. BSON
- C. JSON
- D. B+ Trees
正解：C
質問 # 40
Which of the following operators is used to updated a document partially?
- A. $modify
- B. $set
- C. $project
- D. $update
正解：B
質問 # 41
Consider the following document:
> db.c.find()
{ "_id" : 12, b : [ 3, 5, 7, 2, 1, -4, 3, 12 ] }
Which of the following queries on the "c" collection will return only the first five elements of the array in the
"b"
field? E.g.,
Document you want returned by your query:
{ "_id" : 12, "b" : [ 3, 5, 7, 2, 1 ] >
- A. db.c.find( { > , { b : [ 0 , 5 ] > )
- B. db.c.find( { > , { b : { $substr[ 0 , 5 ] > > )
- C. db.c.find( { > , { b : [ 0, 1, 2, 3, 4, 5 ] > )
- D. db.c.find( { > , { b : { $slice : [ 0 , 5 ] } } )
- E. db.c.find( { b : [ 0 , 5 ] > )
正解：D
質問 # 42
What tool would you use if you want to save a gif file in mongo?
正解：
解説：
mongofile
質問 # 43
Update If Correct is an approach for which of the following concepts in MongoDB:
- A. Concurrency Control
- B. Atomicity
- C. Transaction Management
- D. Performance Management
正解：A
質問 # 44
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 returned 0 documents
- C. The query used an index to fetch the results
- D. None of the above
正解：C
質問 # 45
Which command is used to determine storage capacity of specific database?
- A. constats
- B. dbstats
- C. mongotop
- D. mongostat
正解：B
質問 # 46
What does the following query do when performed on the posts collection? db.posts.update({_id:l},{Title:This is post with ID 1"})
- A. Updates the Title of the post
- B. Replaces the complete document with _id as 1 with the document specified in second parameter
- C. Updating a document is possible only with $set
- D. Syntax error
正解：B
質問 # 47
In a sharded replica set environment, the w Option provides ability for write concern and j Option provides ability for the data to be written on disk journal. Consider that we have a seven member replica set and we want to assure that the writes are committed to journal. What should be the value of j?
- A. 0
- B. 1
- C. 2
- D. 3
正解：D
質問 # 48
What is the first task that a secondary would perform on being prompted by another secondary for an election?
- A. Vote for the first secondary so that it would become the next primary
- B. Start the election process for primary
- C. Connect to primary to confirm its availability
- D. Vote for itself and then call for election
正解：C
質問 # 49
What does the totalKeysExamined field returned by the explain method indicate?
- A. Number of index entries scanned
- B. Details the completed execution of the winning plan as a tree of stages
- C. Number of documents that match the query condition
- D. Number of documents scanned
正解：A
質問 # 50
You are comparing values of different BSON types in mongodb. You want to compare from lowest to highest.
Which comparison order is used?
- A. Object/Array^inData/Symbol,MinKey, Null, Numbers,String
- B. Objec^Array^inData,Symbol, String,MinKey, Null, Numbers
- C. MinKey, Null, Numbers,Symbol, String,Object,Array,BinData
- D. MinKey, Null, Numbers,Object,Array,BinData,Symbol, String
正解：C
質問 # 51
Which of the following is true of the mechanics of replication in MongoDB? Check all that apply.
- A. Operations on the primary are recorded in a capped collection called the oplog
- B. Members of a replica set may replicate data from any other data-bearing member of the set by default
- C. Clients read from the nearest member of a replica ser by default
正解：A
質問 # 52
As per the aggregation pipeline optimization concepts, if you have a $sort followed by a $match:
- A. Providing these parameters in any order does not impact the performance
- B. $sort moves before $match
- C. $match moves before $sort
- D. MongoDB does not do any movements by default and will use the order provided
正解：C
質問 # 53
Which of the tags in a replica set configuration specify the operations to be read from the node with the least network latency?
- A. secondaryPreferred
- B. nearest
- C. primaryPreferred
- D. netLatency
正解：B
質問 # 54
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 : 2, quote : "Find out if that fact is correct." }
- C. { _id : 1, quote : "That's a fact, Jack." }
正解：B、C
質問 # 55
'mongoimport' command is used for
- A. Batch data insertion
- B. Multiple command insertion
- C. None of the above
- D. Multiple command import
正解：A
質問 # 56
In a replica set, a_________number of members ensures that the replica set is always able to select a primary.
- A. Depends on the application architecture
- B. Odd
- C. 0
- D. Even
正解：B
質問 # 57
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
正解：B、C
質問 # 58
You are in a sharded cluster. What will you do prior to initiating backup in sharded cluster?
- A. sh.stopBalancer()
- B. sh.stopserverQ
- C. db.stopBalancer()
- D. db.stopserver()
正解：A
質問 # 59
Which are the ONLY ways to project portions of an array?
- A. $
- B. All of the above
- C. $slice
- D. $ elemMatch
正解：B
質問 # 60
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テストエンジンに練習C100DBAテスト問題：https://jp.fast2test.com/C100DBA-premium-file.html
C100DBAリアル試験問題でテストエンジン問題集トレーニングには123問あります：https://drive.google.com/open?id=1SeuBe7hHFQK7xqq1xLLDo34E6Oj_T9fS