This page was exported from IT Certification Exam Braindumps [ http://blog.braindumpsit.com ] Export date:Sat Apr 12 12:40:26 2025 / +0000 GMT ___________________________________________________ Title: [Q33-Q55] Best Quality MongoDB C100DBA Exam Questions BraindumpsIT Realistic Practice Exams [2022] --------------------------------------------------- Best Quality MongoDB C100DBA Exam Questions BraindumpsIT Realistic Practice Exams [2022] Critical Information To MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) Pass the First Time What is the registration procedure of MongoDB C100DBA Exam Once the exam date has been announced by MongoDB, registration can be done. Registering for this exam is a little different from other certification exams. The steps for taking this exam must be followed. Registration for this exam will open on the date of the announcement. Registering for this certification exam is a free-of-cost process. This is a computer-based exam and is usually two hours long. MongoDB C100DBA Dumps is the best source for passing this certification exam with a high score. The exam takes place at Pearson Vue testing centers. This entry-level certification is only available in the English language. MongoDB website offers information about its training, certification, and more.   Q33. Which of the following is incorrect statement about find and findOne operations in MongoDB?  findQ returns all the documents in a collection while findOne() retrieves only the first one.  find.limit(l) is not the same query as findOne()  findOneQ returns the actual first document retrieved from a collection  findQ and findOneQ returns cursors to the collection documents Q34. We can insert multiple documents in bulk using which of the following operations:  initializeUnorderedBulk  initializeUnorderedBulkOp  initializeBulk  initializeBulkOp Q35. As per the aggregation pipeline optimization concepts, if you have a $sort followed by a $match:  Providing these parameters in any order does not impact the performance  $sort moves before $match  MongoDB does not do any movements by default and will use the order provided  $match moves before $sort Q36. Which command is used to determine storage capacity of specific database?  mongotop  dbstats  mongostat  constats Q37. In a collection that contains 100 post documents, what does the following command do? db. posts.find().skip(5).limit(5)  Skip and limit nullify each other. Hence returning the first five documents  Limits the first five documents and then return them in reverse order  Skips the first five documents and returns the sixth document five times  Skips the first five documents and returns the next five Q38. 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?  200, more  No limit, none  20, it  50, it Q39. MongoDB is  None of the above  Object-oriented DBMS  Relational DBMS  Document-oriented DBMS Q40. Update If Correct is an approach for which of the following concepts in MongoDB:  Concurrency Control  Atomicity  Performance Management  Transaction Management Q41. Dada una coleccion, cuales devuelve con la siguiente querydb.coleccion.find({nombre:”ruben”,apellido:”gomez”},{nombre:l,apellido:l,aficion:l});  { “-id” : Objectld(“580a42b5dfblb5al7427d302”), “nombre” : “ruben”, “apellido” : “gomez”, “aficion” :v u “flipar” }  { “_id” : Objectld(“580a42acdfblb5al7427d301”), “nombre” : “Luis”, “apellido” : “gomez”, “aficion” : u“flipar” }  { “_id” : Objectld(“580a42acdfblb5al7427d301”), “nombre” : “ruben”, “apellido” : “Pablo” , “aficion” : u“flipar”}  { “_id” : Objectld(“580a42acdfblb5al7427d301”), “nombre” : “ruben”, “apellido” : “gomez” > Q42. Which is the correct order (lowest to highest) in which MongoDB compares the BSON types?  Number, Null, String and Object  Null, Number, Object and String  Null, Number, String and Object  String, Null, Number and Object Q43. Consider the following example document from the sample collection. All documents in this collection have the same schema.Which of the following queries will replace this with the document.  db.sample.update( { “_id” : 3 } , { “$set” : { “_id” : 7 , “c” : 4 > > )  db.sample.update( { “_id” : 3 > , { “_id” : 7 , “c” : 4 > , { “justOne” : true > ) / This operation cannot be done with a single query.  db.sample.update( { “_id” : 3 > , { “_id” : 7 , “c” : 4 , { “$unset” : [ “a” , “b” ] } } )  db.sample.update( { “_id” : 3 > , { “_id” : 7 , “c” : 4 > ) Q44. The oplog (operations log) is a special capped collection that keeps a rolling record of all operations that modify the data stored in your databases. All the replica set members contain a copy of the oplog in the following collection:  <replicasetid>.oplog.rs  oplog.rs  <database>..oplog.rs  local.oplog.rs Q45. Below is a sample document of “orders” collection $sortQ46. In a replica set, a_________number of members ensures that the replica set is always able to select a primary.  Even  Odd  2  Depends on the application architecture Q47. Which of the following is true of the mechanics of replication in MongoDB? Check all that apply.  Members of a replica set may replicate data from any other data-bearing member of the set by default  Clients read from the nearest member of a replica ser by default  Operations on the primary are recorded in a capped collection called the oplog Q48. What does the totalKeysExamined field returned by the explain method indicate?  Number of documents that match the query condition  Number of index entries scanned  Details the completed execution of the winning plan as a tree of stages  Number of documents scanned Q49. 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 ] >  db.c.find( { > , { b : { $slice : [ 0 , 5 ] } } )  db.c.find( { b : [ 0 , 5 ] > )  db.c.find( { > , { b : { $substr[ 0 , 5 ] > > )  db.c.find( { > , { b : [ 0, 1, 2, 3, 4, 5 ] > )  db.c.find( { > , { b : [ 0 , 5 ] > ) Q50. Which of the following is a valid Replica Set configuration if you want:1-Have 3 copies of everything2- That RS3 is never primary2- That RSI and RS2 can be primary?You had to see the different configurations, RS3 could be hidden or priority 0 (But not a referee because we need3 replicas), while RSI and RS2 could NOT have priority 0 or be hidden or anything like that In a 4-member RS RSO , RSI, RS2 and RS3 + Referee, RSO (primary) falls after some write operations that have replicated RSI and RS2 (but NOT RS3), who can get up as the new primary?The configuration comes and in it we see that RS2 has a hidden: true (or a priority: 0, (I don’t remember)  ORS1  ORS2  ORS3  O arbiter  RSO Q51. Consider the following posts document:Which of the following queries will return the documents but with only the first two tags in the tags array?  db.posts.find({author:”Tom”}.limit({tags:2})  db.posts.find({author:”Tom”}.limit($slice:{tags:2>)  Both “db.posts.find({author:”Tom”},{tags:{$slice:2}})” and“db.posts.find({author:”Tom”}).limit($slice: {tags:2})” are valid. $slice works both with projection and limit.  db.posts.find({author:”Tom”>,{tags:{$slice:2}) Q52. To add a new user and enable authentication in MongoDB, which of the following steps need be executed?  update users collection and restart mongodb  All of the above  update users collection and restart mongodb with -auth option  update users collection and run db.enableAuthenticationQ Q53. Given a collection posts as shown below having a document array comments, which of the following command will create an index on the comment author descending?  db.posts.createIndex({commerits.$.author”:-l});  db.posts.createIndex({comments.$.author”: {$desc:l>});  db.posts.createIndex({comments.author”:-l}); Q54. Which of the following needs to be performed prior to initiate backup on a sharded cluster?  db.stopBalancer( )  sh.stopServer( )  db.stopServer( )  sh.stopBalancer( ) Q55. What read preference should your application use if you want to read from the primary under normal circumstances but allow reads from secondaries when a primary is unavailable?  secondaryPreferred  Secondary  nearest  primary  primaryPreferred  Loading … For more info read reference MongoDB C100DBA Exam Certification Path of MongoDB C100DBA Exam MongoDB Developer Certified AssociateMongoDB Certified DeveloperMongoDB Certified EngineerMongoDB Certified Architect   C100DBA EXAM DUMPS WITH GUARANTEED SUCCESS: https://www.braindumpsit.com/C100DBA_real-exam.html --------------------------------------------------- Images: https://blog.braindumpsit.com/wp-content/plugins/watu/loading.gif https://blog.braindumpsit.com/wp-content/plugins/watu/loading.gif --------------------------------------------------- --------------------------------------------------- Post date: 2022-04-19 11:11:33 Post date GMT: 2022-04-19 11:11:33 Post modified date: 2022-04-19 11:11:33 Post modified date GMT: 2022-04-19 11:11:33