DRAG DROP
You have an Office 365 tenant. An organization is migrating from an Exchange organization to Office
365.
Users report that Outlook does not display the availability of other users for meetings. You must
determine whether an Office 365 mailbox can access the scheduling availability of a user with an onpremises mailbox. You must also run a test to verify that an on-premises mailbox can access the
scheduling availability of a user that has an Office 365 mailbox.
You need to conduct the tests.
What should you do? To answer, drag the appropriate test to run to the correct mailbox test
scenario. Each test may be used once, more than once or not at all. You may need to drag the split
bar between panes or scroll to view content.
Answer: 
Explanation:
* Microsoft Exchange Web Services Connectivity test is web-based, and is designed to help IT
Administrators troubleshoot connectivity issues that affect their Exchange Server deployments. The
tool simulates several client logon and mail flow scenarios. When a test fails, many of the errors
have troubleshooting tips to assist the IT Administrator to correct the problem.
* The Outlook Connectivity Test is available with the Microsoft Office 365 Support and Recovery
Assistant.
https://testconnectivity.microsoft.com/
Incorrect:
* Not: Office 365 Single Sign-on test
This is just used to troubleshoot authentication problems.
I’d say Microsoft Exchange Web Services Connectivity Test for both. You’re basically testing availability in both directions and that’s the test for availability.
According to the site http://o365info.com/microsoft-remote-connectivity-analyzer-exrca-autodiscover-troubleshooting-tools-part-2-of-4-part-22-of-36/, the Outlook Connectivity is a “combined” test that includes the Autodiscover remote connectivity test and the RPC\HTTPS remote connectivity test. So I suppose that the correct answer should be “Outlook Connectivity Test” for both scenarios.
http://www.officeformachelp.com/outlook/exchange/exchange-server-remote-connectivity-analyzer/
I think it is Microsoft Exchange Web Services Connectivity Test
I’m with Marian:
I’ll go with Microsoft Exchange Web Services Connectivity Test for both.
In the https://testconnectivity.microsoft.com/ web page you have this test for both O365 and Exchange Server and this includes the availability test.
My understanding is that the Outlook Connectivity test tests that you can connect. The Microsoft Exchange Web Services Connectivity test also checks functionality like availability etc. So I will be going with the latter for both.