Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A 500-user organization is licensed with Microsoft 365 E3. They need to comply with a regulation that requires retaining all Exchange Online mailbox content for 10 years and providing unlimited archive storage for users. Which add-on license or service should they acquire to meet this requirement most cost-effectively?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Distractor review
Microsoft 365 E5 Compliance add-on
E5 Compliance adds advanced compliance features like communication compliance and more, but the primary need (unlimited archive and 10-year retention) can be met with a simpler add-on.
B
Best answer
Exchange Online Archiving for Exchange Online Plan 2
This add-on provides unlimited archive storage for users who already have Exchange Online Plan 2 (included in E3). Retention policies can enforce 10-year retention.
C
Distractor review
Microsoft Purview eDiscovery add-on
eDiscovery add-ons are for advanced search and hold capabilities, not for archive storage capacity.
D
Distractor review
Microsoft 365 E5 Security add-on
E5 Security adds threat protection features like Defender for Identity and Cloud App Security, unrelated to mailbox archiving.
Common exam trap
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Technical deep dive
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Related practice questions
Related MS-900 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
During requirements gathering, an IT manager says the organization must let users provision resources from a portal without provider interaction. Cloud concept or benefit best matches this requirement?
Question 2
A compliance-aware administrator is selecting the right Microsoft 365 capability to use Microsoft 365 and another public cloud provider for different workloads. Cloud concept or benefit best matches this requirement?
Question 3
While preparing a Microsoft 365 adoption plan, a consultant is asked to manage leads, opportunities, customer accounts, and sales processes. Microsoft 365 app or service is the best fit?
Question 4
A project manager needs to create a detailed project schedule with a Gantt chart view, task dependencies, critical path analysis, and milestones. The schedule must be shared with team members who can update their tasks, and the manager wants to track progress against a baseline. Which Microsoft 365 app is specifically designed for this type of project management?
Question 5
A project manager wants to schedule a meeting with team members to discuss project progress. They need to find a time that works for everyone based on their calendars. Which Microsoft 365 app should they use?
Question 6
A project manager wants to create a visual dashboard that tracks project tasks, deadlines, and progress. The dashboard should pull data from a Microsoft List and update in real time. Which Microsoft 365 app is best suited for building this interactive dashboard?
FAQ
Questions learners often ask
What does this MS-900 question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: Exchange Online Archiving for Exchange Online Plan 2 — Microsoft 365 E3 includes Exchange Online Plan 2, which provides a 100 GB mailbox and a 1.5 TB archive. The Exchange Online Archiving add-on unlocks unlimited archive storage for users with Exchange Online Plan 2. Retention policies for up to 10 years can be configured without additional licensing. E5 Compliance includes advanced eDiscovery but is not required for archive storage and basic retention. The eDiscovery add-on is for advanced search capabilities. E5 Security focuses on threat protection.
What should I do if I get this MS-900 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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