Confuse Skull: MONGO DB MCQ's

MONGO DB MCQ's

1. Which is the method used to terminate certain operations after examination

db.kill

2. Which is the method in MongoDB removes a one or more roles from a user on the current database

db.revokeroles from user

3. Which of the following will help to identify long running queries

currentop

4. In MongoDB ........ is the operator limits the contents of an array field from the query

ELEMmatch

5. Which model is used when there is contains relationships between entities

embedded

6. Which of the following in MongoDB is a system that can help identify inefficient queries and operations.

profiler

7. Which of the following in MongoDB can limit the size of the result document for a query operation.

limit

8. Which method is used to return information for all users associated with a database.

getusers

9. Default size of Chunk in MongoDB ___________

64mb

10. Find the correct answer from the following In the absence of Primary, replica set cannot accept this operations

WRITE

11. Which is the method to check the size of the oplog for a given replica set member.

printrepinfo

12. In MongoDB .............helps to synchronize data across multiple servers.

rep

13. Database profiler writes data in --------------

all

14. db.isMaster() can be used to check connected node is primary or not

db.ismaster

15. The chunk operations performed on background is ______

split and balance

16. Which indexes uses planar geometry when returning results.

2d Indexes

17. Which of the following is a capped collection

system.profile

18. Choose the data model which allow applications to store related pieces of information in the same database record

embedded

19. Which of the following command is used in Determining Indexes Sizes and details of Indexes for Product Collection

DB.PRODUCTS.STATS()

20. In MongoDB these are used to index array data

Mutikey Index

21. Which is the method used to create Index in MongoDB

db.ensureIndex()

22. Which is the Index used for muliple fields

Compound Index

23. Which of the following method is used to create Index in MongoDB

db.ensureIndex()

24. Find the command which removes the user from the current database.

db.dropuser()

25. Which is the method used to check the current length of replication lag

rs.printSlaveReplicationInfo()

26. Which is the command to Check the Size of the Oplog

rs.printReplicationInfo()/ printreplication info

27. In MongoDB identify the command which add an shard with a sharded Cluster

addShard

28. In MongoDB which is the storage measure used by master's oplog ?

MB

29. From the following find the background process that keeps chunks from growing too large.

chunking

30. The ........... is the command returns a document that provides an overview of the database’s state.

Serverstatus()

31.

Status

32. Find the command which forces MongoDB to use a particular index for a db.collection.find() operation

hint()

33. Identify the index type that supports searching for string content in a collection.

text indexes

34. Find a technique of splitting up a large collection among multiple server

Sharding

35. Which is the method used in MongoDB to Grant user

db.grantRolesToUser()

36. In MongoDB explain() option shows the number of documents looked for a query

SCAN

37. Which of the following in MongoDB provides information for various lock types and lock modes held during the operation.

system.profile.locks

38. In MongoDB ................. represents the number of times the operation had to wait for the acquireCount.

system.profile.locks.acquireWaitCount

39. By default MongoDB Automatically logs slow queries above ..... ms to the log

100

40. Which will be command to return information on query plans and execution statistics of the query plans

explain

41. Choose the indexes to index the content stored in arrays

Multikey

42. Which of the following is supported for backing up and restoring of MongoDB deployments

ALL

43. Choose the operations that can be captured by database profiler ?

CURSOR

44. Which of the following will controls the amount of logging output that mongod write to the log.

Systemlog

45. From the following find which will provides more even data distribution across the sharded cluster

horizontal

46. Which model is used to describe references relationships between documents

ALL

47. Mongo client will generates ....... command to initiate a new replica set.

initiate

48. In DataProfiler ........ will shows to indicate there is no index use.

executionstats.nreturned

No comments:

Post a Comment