MongoDB interview questions part 4
MongoDB interview questions part 4
Take as many assements as you can to improve your validate your skill rating
Total Questions: 20
1. Indexes are typically available in ______ or located sequentially on disk.
Correct Answer is : RAM
2. Point out the wrong statement :
Correct Answer is : More selective queries match a larger percentage of documents
3. ___________ is used to determine whether a query is a covered query .
Correct Answer is : explain()
4. The ________ message is used to update a document in a collection.
Correct Answer is : OP_UPDATE
5. Point out the correct statement :
Correct Answer is : The selectivity of regular expressions depends on the expressions themselves
6. _____ can modify specific fields of an existing document or documents or replace an existing document entirely, depending on the update parameter.
Correct Answer is : update()
7. The update() method uses the _______ command, which uses the default write concern.
Correct Answer is : update
8. _________ is used to view statistics about the query plan for a given query.
Correct Answer is : cursor.explain()
9. An ________ query plan has returned a threshold number of matching results
Correct Answer is : ordered
10. A query _______ consists of a combination of query, sort, and projection specifications.
Correct Answer is : shape
11. The auditing facility can write audit events to the console, the _________, a JSON file, or a BSON file.
Correct Answer is : syslog
12. The auditing facility can write audit events to the console, the _________, a JSON file, or a BSON file.
Correct Answer is : syslog
13. Point out the correct statement :
Correct Answer is : All of the mentioned
14. Point out the correct statement :
Correct Answer is : All of the mentioned
15. _________ contains the local ip address and the port number of the running instance.
Correct Answer is : local
16. _________ contains the local ip address and the port number of the running instance.
Correct Answer is : local
17. Enabling _____________ degrades performance more than logging only the authorization failures.
Correct Answer is : auditAuthorizationSuccess
18. Enabling _____________ degrades performance more than logging only the authorization failures.
Correct Answer is : auditAuthorizationSuccess
19. Point out the correct statement :
Correct Answer is : The selectivity of regular expressions depends on the expressions themselves
20. Point out the correct statement :
Correct Answer is : The selectivity of regular expressions depends on the expressions themselves
