This page was exported from Exam for engine [ http://blog.test4engine.com ] Export date:Mon Nov 18 2:35:54 2024 / +0000 GMT ___________________________________________________ Title: Ultimate Guide to C100DBA Dumps - Enhance Your Future Career Now [Q39-Q56] ---------------------------------------------------  [Oct 18, 2022] MongoDB Dumps - Learn How To Deal With The (C100DBA) Exam Anxiety DEMO FREE BEFORE YOU BUY C100DBA DUMPS What Are the Requirements for Taking This Exam? The requirements to take this exam are listed here: This certification exam is given by MongoDB, Inc., an industry leader in providing highly scalable open-source database solutions that are used worldwide by companies of all sizes. This certification exam provides an excellent opportunity to prove that you know everything about MongoDB. Posts with likes ranging from 25 to 50 are considered well-wrote. You can also submit them to the database company for practice purposes. Command line tools for this kind of work are provided by the companyMongoDB to its users. It is, therefore, recommended that you develop a habit of reading the information provided by the company on the site. Command line tools for this kind of work are provided by the company MongoDB to its users. Error messages are generated in this way. Information technology has changed the way people are working today. No doubt about that. That's why many people have opted to acquire C100DBA certification to become more competitive in this field. This exam is very important for professionals who are working with MongoDB because through this they can prove their skills and knowledge in this field. The maximum number of applicants applying for the MongoDB C100DBA exam is 60, which means that the maximum number of questions asked in the exam is 60. MongoDB C100DBA Dumps is the best way to become familiar with the contents of this exam. If that number is not achieved then there may be fewer questions asked in the exam. There are two different types of exams for this C100DBA certification, one is multiple choice questions and the second one is programming.   QUESTION 39Which of the following command is used to get all the indexes on a collection?  db.collection.showIndexes()  db.collection.findlndexes()  db.showIndexes()  db.collection.getlndexesQ QUESTION 40Update If Correct is an approach for which of the following concepts in MongoDB:  Concurrency Control  Atomicity  Performance Management  Transaction Management QUESTION 41Mongodb does provide high availability via which option?  Replication  Indexing  Sharding  Journaling QUESTION 42MongoDB is a schema-less design.  False  True QUESTION 43What is the maximum size of a MongoDB document  16 MB  12 MB  2 MB  There is no maximum size. It depends on the RAM. QUESTION 44The 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 $push. QUESTION 45Addding the index {a:l} can potentially decrease the speed of which of the following operations? Check all that apply.  db.collection.update({b:456>, {$inc: {a:l> })  db.collection.find( {a : 232} )  db.collection.insert( { a:341}) QUESTION 46To 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 QUESTION 47You perform the following operation in the shell: db.foo.insert( { } ); What gets inserted?  A document will be inserted with the same _id as the last document inserted  A document that matches the collection’s existing schema, but with null fields  A document with an _id assigned to be an Objectld  An empty document  No document will be inserted; an error will be raised QUESTION 48You have designed a web application with mongoDB. You have configured replication. The replica set is in place and function properly. What happens in case of failure?  Switchover needs to be done manually  Failover happens automatically  Switchover happens automatically  Failover needs to be done manually QUESTION 49Consider 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, $lt: 9 } } } ) QUESTION 50In a sharded replicas set environment with multiple mongos servers, which of the following would decide the mongos failover?  mongos  mongo shell  individual language drivers  mongod QUESTION 51Which of the following is incorrect statement about find and findOne operations in MongoDB?  findQ returns all the documents in a collection while findOne() retrieves only the first one.  find.limit(l) is not the same query as findOne()  findOneQ returns the actual first document retrieved from a collection  findQ and findOneQ returns cursors to the collection documents QUESTION 52Given a collection posts as shown below having a document array comments, which of the following command will create an index on the comment author descending?  db.posts.createIndex({^comments.$.author”:-l});  db. posts.createIndex({^comments.author” :1});  db.posts.createIndex({^commerits.author”;-!}); QUESTION 53Which 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 > > ] > )  {”__id” :3, “a”: 4, “c” :0, “b” :14}  {”_Jd” :7, “a”: 8, “c” :1, “b” :7}  {“.Jd” :6, “a”: 1, “c” :1, “b” :5}  { ”Jd” :9, “a”: 17, “c”: 1, “b”: 1}  { Jd” :10,”a”: 3, “c”: 1, “b”: 1}  {“.Jd” :: 2, “a”: 2, “c” :: 0, “b”: 1}  {“.Jd” :: 4, “a”: 5, “c” :: 0, “b”: 17}  {“.Jd” :: 1, “a”: 0, “c” :: 0, “b”: 2}  {“.Jd” :: 5, “a”: 3, “c” :: 0, “b”: 12}  {“.Jd” :: 8, “a”: 11, “c”: 1, “b”: 0} QUESTION 54In 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?  1  2  0  7 QUESTION 55What does the following aggregate query perform?  Fetches the posts with likes between 100 and 200 and sets their _id as null  Groups the posts by number of likes (101, 102, 103.) by adding 1 every time  Calculates the number of posts with likes between 100 and 200  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 QUESTION 56What tool do you use if you want to extract a CSV from mongo? mongoexport Loading … Related MongoDB Certified Courses and Exams This is the only entry level certification available for MongoDB. If you like to test your knowledge of MongoDB technology and want to take one exam, then this is the right option for you. It does not take much time to pass this certification exam. Previous experience in database administration or database programming is not required for this certification exam. Evaluation based on your performance. Real-time experience in MongoDB is not required for this certification exam. Certified you have the knowledge and experience of using MongoDB. Real-time experience in database administration or database programming is not required for this certification exam. Quote, which is the most popular option for MongoDB certification. Correct information about this exam. MongoDB C100DBA Dumps Check how to prepare for MongoDB C100DBA exam, which is the most popular option for certification preparation.   Latest MongoDB C100DBA Dumps with Test Engine and PDF: https://www.test4engine.com/C100DBA_exam-latest-braindumps.html --------------------------------------------------- Images: https://blog.test4engine.com/wp-content/plugins/watu/loading.gif https://blog.test4engine.com/wp-content/plugins/watu/loading.gif --------------------------------------------------- --------------------------------------------------- Post date: 2022-10-18 11:53:26 Post date GMT: 2022-10-18 11:53:26 Post modified date: 2022-10-18 11:53:26 Post modified date GMT: 2022-10-18 11:53:26