You are an administrator for a company named Contoso, Ltd.
Contoso has an Exchange Server 2013 organization.
Contoso has a partnership agreement with a company named

A.
Datum Corporation. A. Datum has an Exchange server 2013 organization.
Both organizations have a federation trust to the Microsoft Federation Gateway. Users at Contoso
plan to share their free/busy information with users at A. Datum.
You need to recommend which tasks must be performed to ensure that the A. Datum users can see
the free/busy information of the Contoso users.
Which two actions should you recommend? (Each correct answer presents part of the solution.
Choose two.)
In the Exchange Server organization of Contoso, configure directory synchronization.

A.
Datum Corporation. A. Datum has an Exchange server 2013 organization.
Both organizations have a federation trust to the Microsoft Federation Gateway. Users at Contoso
plan to share their free/busy information with users at A. Datum.
You need to recommend which tasks must be performed to ensure that the A. Datum users can see
the free/busy information of the Contoso users.
Which two actions should you recommend? (Each correct answer presents part of the solution.
Choose two.)
In the Exchange Server organization of Contoso, configure directory synchronization.

B.
In the Exchange Server organization of A. Datum, create a sharing policy.

C.
In the Exchange Server organization of A. Datum, configure directory synchronization.

D.
In the Exchange Server organization of Contoso, create an organization relationship.

E.
In the Exchange Server organization of Contoso, create a sharing policy.

F.
In the Exchange Server organization of A. Datum, create an organization relationship.

Explanation:
Business-to-business calendar sharing is set up by creating organization relationships. User-to-user
calendar sharing is set up by applying sharing policies.
There is no requirement for Contoso users to view the free/busy information of the A.Datum users.
Therefore, we don’t need to create an organization relationship in A.Datum.
Configure Federated Sharing
Step 1: Create and configure a federation trust
(this has already been done here)
Step 2 (D): Create an organization relationship
An organization relationship enables users in your Exchange organization to share calendar
free/busy information as part of federated sharing with other federated Exchange organizations.
Step 3 (E): Create a sharing policy
Sharing policies enable user-established, people-to-people sharing of both calendar and contact
information with different types of external users. They support the sharing of calendar and contact
information with external federated organizations, external non-federated organizations, and
individuals with Internet access. If you don’t need to configure people-to-people or contact sharing
(organization-level sharing only), you don’t need to configure a sharing policy.
Step 4: Configure an Autodiscover public DNS record
Note:
With federated sharing, users in your on-premises Exchange organization can share free/busy
calendar information with recipients in other Exchange organizations that are also configured for
federated sharing. Free/busy sharing can be enabled between two organizations running Exchange
2013 and also between organizations with a mixed Exchange deployment.