This page was exported from Top Exam Collection [ http://blog.topexamcollection.com ] Export date:Sun Feb 23 20:13:15 2025 / +0000 GMT ___________________________________________________ Title: Latest [Jun 17, 2022] C100DBA Exam Questions – Valid C100DBA Dumps Pdf [Q50-Q68] --------------------------------------------------- Latest [Jun 17, 2022] C100DBA Exam Questions – Valid C100DBA Dumps Pdf C100DBA Practice Test Questions Answers Updated 123 Questions Certification Topics of MongoDB C100DBA Exam Certification JN0-1102 Exam is a Juniper Networks certification exam. It covers a variety of topics and the percentage of those topics can be found from the Juniper Networks certification webpage. Fundamentals of system programming: 75%Fundamental database concepts: 75%Fundamentals of software development: 75%Basic JavaScript programming: 75% Prerequisites of MongoDB C100DBA Exam MongoDB C100DBA: Deploy and MaintainMongoDB Developer Certified AssociateMongoDB CMEv5 Implementation EngineerMongoDB C100DBA: Installation and Administration: Essentials   NO.50 The difference between $push and $addToSet is:  $addToSet needs the fields to be already present while $push will work even if the field is not present  $addToSet adds the item to the field only if it does not exist already; while $push pushes the item to the field irrespective of whether it was present or not  $addToSet adds the item to the field only if the new item is of the same datatype  There is no major difference between them. $addToSet is a deprecated version of $push. NO.51 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” } } )  { _id : 3, quote : “Nobody will ever catch me.” }  { _id : 1, quote : “That’s a fact, Jack.” }  { _id : 2, quote : “Find out if that fact is correct.” } NO.52 Consider a collection posts which has fields: Jd, post_text, post_author, post_timestamp, post_tags etc. Which of the following query retrieves ONLY the key named post_text from the first document retrieved?  db.posts.finOne({},{_id:0, post_text:1})  db.posts.findOne({post_text: 1})  db.posts.find({},{_id:Of post_text:1})  db.posts.finOne{},{post_text:l}) NO.53 When should we consider representing a one-to-many relationship in an embedded collection instead of separate collection?  When the many is not very large  When the many is very large  Always  Never NO.54 In a sharded cluster, from which node does one stop the balancer process before initiating backup?  Any node  replicaset primary node  config server node  mongos node NO.55 What tool do you use to see if you have a problem in the consumption of disk I / 0? MongoperfNO.56 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 NO.57 Which mongodb tool is used to report details on number of database operations in MongoDB?  mongorestore  mongostat  mongodump  mongotop NO.58 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 NO.59 Consider that the posts collection contains an array called ratings which contains ratings given to the post by various users in the following format:Which of the following query will return all the documents where the ratings array contains elements that in some combination satisfy the query conditions?  db.inventory.find( { ratings: { $elemMatch: { $gte: 3, $lte: 6 } } } )  db.inventory.find( { ratings: { $elemMatch: { $gt: 3, $lt: 6 }  db.inventory.find( { ratings: { ratings.$: { $gt: 5, $lt: 9 } } } )  db.inventory.find( { ratings: { ratings: { $gt: 5, $lt: 9 } } } ) NO.60 Which of the following command inside aggregate command is used in MongoDB aggregation to filter the documents to pass only the documents that match the specified condition(s) to the next pipeline stage.  $aggregate  $sum  $match  $group NO.61 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.  As an optimized sort query (scanAndOrder = false) using “mylndex” because we are sorting on an indexed field  As an indexed query using “mylndex” because field “user.login” is indexed  MongoDB will need to do a table/collection scan to find matching documents  None of the above  As a covered query using “mylndex” because we are filtering out “_id” and only returning “user.login” NO.62 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 NO.63 Mongodb does provide high availability via which option?  Replication  Indexing  Sharding  Journaling NO.64 Which of the following aggregate commands in MongoDB uses a pipeline approach with the goals of improving the aggregation performance?  mapReduce  group  aggregate  All of the above NO.65 The following aggregation option is used to specify the specific fields that needs to be passed to the next stage of the aggregation pipeline:  $project  $aggregate  $match  $group NO.66 The________operator can be used to identify an element in the array to be updated without explicitly specifying the position of the element.  $ elemMatch  $slice  Updating an array field without knowing its index is not possible.  $ NO.67 Which of the following is supported by MongoDB?  Transaction Management  ACID Transactions  Journaling  Relationships between Collections (Primary Key Foreign Key) NO.68 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  Loading … C100DBA dumps Sure Practice with 123 Questions: https://www.topexamcollection.com/C100DBA-vce-collection.html --------------------------------------------------- Images: https://blog.topexamcollection.com/wp-content/plugins/watu/loading.gif https://blog.topexamcollection.com/wp-content/plugins/watu/loading.gif --------------------------------------------------- --------------------------------------------------- Post date: 2022-06-17 22:41:18 Post date GMT: 2022-06-17 22:41:18 Post modified date: 2022-06-17 22:41:18 Post modified date GMT: 2022-06-17 22:41:18