MS-900 Practice Question: Describe Microsoft 365 pricing, licensing, and support
This MS-900 practice question tests your understanding of describe microsoft 365 pricing, licensing, and support. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A user is unable to send emails with attachments larger than 25 MB. The organization has Microsoft 365 Business Standard. What should you do to increase the attachment limit?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Modify the maximum message size in the Exchange admin center
In Microsoft 365 Business Standard, the default maximum message size for email attachments is 25 MB. To increase this limit, you must modify the maximum message size setting in the Exchange admin center (EAC), which controls the transport limits for the organization. This is the correct administrative action to raise the attachment size threshold beyond the default.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Modify the maximum message size in the Exchange admin center
Why this is correct
An admin can increase the maximum send/receive message size up to 150 MB via the Exchange admin center.
Related concept
Read the scenario before looking for a memorised answer.
✗
Instruct the user to compress the file
Why it's wrong here
Compression may help but does not change the policy; the user can still hit the limit if the compressed file exceeds 25 MB.
✗
Purchase an Exchange Online Kiosk add-on
Why it's wrong here
Kiosk add-on reduces mailbox size and does not increase attachment limits.
✗
Have the user upload the file to OneDrive and share a link
Why it's wrong here
This is a workaround but does not increase the attachment limit; the question asks to increase the limit.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse the 25 MB default limit with a hard-coded protocol restriction (like SMTP's theoretical limit), leading them to choose workarounds like compression or OneDrive instead of recognizing that the limit is an administrative policy configurable in the Exchange admin center.
Detailed technical explanation
How to think about this question
The maximum message size in Exchange Online is enforced by the `MaxSendSize` and `MaxReceiveSize` parameters on the organization's transport configuration, which can be adjusted via PowerShell (e.g., `Set-TransportConfig -MaxSendSize 50MB`) or the EAC. This limit applies to the entire message, including the body and all attachments, and is separate from the per-recipient or per-mailbox limits. In a real-world scenario, increasing this limit may require also adjusting the Outlook client's maximum attachment size setting (e.g., via Group Policy) to prevent client-side rejection.
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.
TExam Day Tips
→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.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this MS-900 question in full detail.
Describe Microsoft 365 pricing, licensing, and support — This question tests Describe Microsoft 365 pricing, licensing, and support — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Modify the maximum message size in the Exchange admin center — In Microsoft 365 Business Standard, the default maximum message size for email attachments is 25 MB. To increase this limit, you must modify the maximum message size setting in the Exchange admin center (EAC), which controls the transport limits for the organization. This is the correct administrative action to raise the attachment size threshold beyond the default.
What should I do if I get this MS-900 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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