Cisco
CompTIA
ISC
EC-Council
EXIN
Fortinet
ITIL
Juniper
Microsoft
VMware
Avaya
SAP
Google
NVIDIA
Salesforce
Amazon
Palo Alto Networks
ISC2
Splunk
ServiceNow
All Vendors
  2. Home
  3. Exams
  4. MongoDB
  5. C100DBA

MongoDB C100DBA Exam
MongoDB Associate Database Administrator (Page 3 )

Updated On: 7-Feb-2026
Page 3 of 28
PDF with 136 Questions

The MongoDB explain() method does not support which of the following verbosity mode:

  1. executionStats
  2. queryPlanner
  3. customExecutionStats
  4. allPlansExecution

Answer(s): A



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?

  1. db.posts.finOne({},{_id:0, post_text:1})
  2. db.posts.findOne({post_text: 1})
  3. db.posts.find({},{_id:Of post_text:1})
  4. db.posts.finOne«},{post_text:l})

Answer(s): A



In 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. 1
  2. 2
  3. 0
  4. 7

Answer(s): B



Aggregation Pipelines have a limit of:

  1. 2 MB document and 100 MB RAM
  2. 16 MB document and 100 MB RAM
  3. No limit on document and 100 MB RAM
  4. 2 MB document and no limit on RAM

Answer(s): B



What is the maximum size of a MongoDB document?

  1. 2 MB
  2. 12 MB
  3. There is no maximum size. It depends on the RAM.
  4. 16 MB

Answer(s): D






Post your Comments and Discuss MongoDB C100DBA exam prep with other Community members:

Join the C100DBA Discussion