MS-102 Deploy and manage a Microsoft 365 tenant Practice Question
This MS-102 practice question tests your understanding of deploy and manage a microsoft 365 tenant. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
Your organization has a Microsoft 365 E5 tenant. You need to set up a shared mailbox for the IT help desk (helpdesk@contoso.com). The help desk team needs to monitor the mailbox and respond to emails. What is the recommended way to grant access to the shared mailbox?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Add the help desk users as members of the shared mailbox from the Exchange admin center.
Option C is correct because the recommended method to grant access to a shared mailbox in Exchange Online is to add users as members directly from the Exchange admin center (EAC). This automatically assigns the necessary Full Access and Send As permissions without requiring licenses for each user, as shared mailboxes can be accessed by licensed users without needing a separate license for the mailbox itself.
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.
✗
Assign an Exchange Online license to each help desk user and grant them Full Access via PowerShell.
Why it's wrong here
Licenses are not required for shared mailbox access.
✗
Create a security group and add it to the shared mailbox permissions.
Why it's wrong here
Security groups are not supported for shared mailbox permissions.
✓
Add the help desk users as members of the shared mailbox from the Exchange admin center.
Why this is correct
Members automatically get Full Access and Send As permissions.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create a distribution group containing the help desk users and grant the group access to the mailbox.
Why it's wrong here
Distribution groups cannot be granted permissions.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse distribution groups with security groups or assume that licensing is required for each user accessing a shared mailbox, leading them to select PowerShell or group-based options instead of the straightforward member addition in the Exchange admin center.
Detailed technical explanation
How to think about this question
Under the hood, shared mailboxes in Exchange Online use the same mailbox database as user mailboxes but are flagged with a RecipientTypeDetails of 'SharedMailbox'. When users are added as members via the EAC, the system automatically applies the 'FullAccess' and 'SendAs' rights using the Add-MailboxPermission and Add-RecipientPermission cmdlets, respectively. A key subtlety is that shared mailboxes have a maximum size of 50 GB without a license, but if you need to archive or increase storage, you must assign an Exchange Online Plan 2 license to the shared mailbox itself, not to the users.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this MS-102 question in full detail.
Deploy and manage a Microsoft 365 tenant — This question tests Deploy and manage a Microsoft 365 tenant — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Add the help desk users as members of the shared mailbox from the Exchange admin center. — Option C is correct because the recommended method to grant access to a shared mailbox in Exchange Online is to add users as members directly from the Exchange admin center (EAC). This automatically assigns the necessary Full Access and Send As permissions without requiring licenses for each user, as shared mailboxes can be accessed by licensed users without needing a separate license for the mailbox itself.
What should I do if I get this MS-102 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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