Your company has an Office 365 subscription. A user named Test5 has a mailbox. You need to ensure that all
of the email messages sent and received by Test5 are accessible to members of the audit department for 60
days, even if Test5 permanently deletes the messages. What should you do?

A.
Run the Set-User cmdlet.

B.
Run the Set-Mailbox cmdlet.

C.
Run the Set-RetentionPolicyTag cmdlet.

D.
Run the Set-MailboxDatabase cmdlet.

E.
Run the Set-RetentionPolicy cmdlet.

Explanation:
The AuditLogAgeLimit parameter of the Set-Mailbox cmdlet allows you to stipulate how long audit logs for amailbox are retained. Logs older than the specified period are removed. The default value is 90 days.
To meet the requirements in this question, we need to configure a litigation hold on the mailbox.
Place a mailbox on Litigation Hold to preserve all mailbox content, including deleted items and original versions
of modified items. When you place a user’ mailbox on Litigation Hold, content in the user’s archive mailbox (if
it’s enabled) is also placed on hold. Deleted and modified items are preserved for a specified period, or until you
remove the mailbox from Litigation Hold.
To place a mailbox on litigation hold, we use the Set-Mailbox cmdlet. For example:
Set-Mailbox test5@contoso.com -LitigationHoldEnabled $true -LitigationHoldDuration 60
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