MB 2-715 certification

Hi All,

I am preparing for MB 2-715 certification. There are some questions which are not sure about their answers.

Could anyone help me to understand their correct answers with explanation.

Question 1:

You are a system administrator at Contoso. Inc.
You need to ensure that only system administrators and system customizers
What is likely the cause of this issue?
A. Your instance is being upgraded.
B. Your storage limit was reached.
C. Your instance is in Administration mode.
D. Your instance has been reset

Question 2:

You are a system administrator at Contoso, Inc.
You need to ensure that only system administrators and system customizers have access to your
development instance. What should you do? (Choose two)
A. Switch the instance to managed.
B. Place the instance in Administration mode.
C. Use Security Groups to control access to the preview instance.
D. Set the instance to Preview mode.

Question 3: 

You are a system administrator for an organization with a Microsoft Dynamics 365 deployment
(hosted in a European data center) and Active Directory Federated Services on-premises. Your
organization acquires a new company in the US that is using Microsoft Dynamics 365 Online in its
own tenant
The US company can continue to use their Microsoft Dynamics 365 Online instance as is. All users
need to be on the European Active Directory, but they need to use an instance close to them.
What should you do?
A. Migrate the US instance to the European tenant, and set the instance the US region.
B. Keep the US tenant and federate Active Directory with both the US and European teanants.
C. Keep the US tenant, and federate Active Directory with only the European tenant.
D. Migrate the US instance to the European tenant, and set the instance to the European region.

Question 4: 

You are a remote sales person using the Microsoft Dynamics 365 app on your tablet to access your
dat
a. You are now in an area where you do not have Internet access. Which statement is true?
A. Records included in the Microsoft Dynamics 365 for Outlook offline filters have been stored on
your tablet for offline access.
B. Records included in the synchronization filters have been stored on your tablet for offline access.
C. Records that you own have been stored on your tablet for offline access.
D. Records recently viewed have been stored on your tablet for offline access.

Thanks & Regards,

Sudhir