A company named Contoso, Ltd. uses a Microsoft Exchange Server 2019 hybrid environment. User mailboxes exist in Exchange Server and in Exchange Online.
Users in Exchange Online report they are unable to view free/busy information for users in Exchange Server. You suspect that the problem is caused by Autodiscover DNS queries. You plan to bypass the Autodiscover process to exclude this as a potential cause.
You need to configure Exchange Online for the on-premises endpoint.
How should you complete the command? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

A company uses Exchange Online. The company enables Microsoft Office 365 Message Encryption (OME).
A user named User1 sends an encrypted email to a dynamic distribution group named DDG1. A user named
User2 receives the email from DDG1 but is unable to open the encrypted email.
You need to resolve the issue.
What should you do?
A company uses Exchange Online. The company creates a public folder mailbox named Pub1.
A user named User1 reports they are unable to access Pub1.
User1 reports they receive the following error message after you configure the permission on Pub1:
There is no existing permission entry found for user: User1
You need to resolve the issue. Which cmdlet should you use?
A company uses Exchange Online.
A user named User1 reports that they are unable to add new delegates to and remove them from their calendar.
You need to resolve the issue.
How should you complete the command? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

A company uses Exchange Online.
A user reports that they did not receive an email from an external sender. You perform a message trace and
observe the following in the message header SFV: BU
You need to resolve the issue.
Solution: Remove the sender's domain from the domain block list in the anti-spam policy.
Does the solution meet the goal?