Your network contains one Active Directory domain named contoso.com. The forest functional level is Windows
Server 2012. All servers run Windows Server 2012 R2. All client computers run Windows 8.1.
The domain contains 10 domain controllers and a read-only domain controller (RODC) named RODC01. All
domain controllers and RODCs are hosted on a Hyper-V host that runs Windows Server 2012 R2.
You need to identify whether deleted objects can be recovered from the Active Directory Recycle Bin.
Which cmdlet should you use?

A.
Get-ADGroupMember

B.
Get-ADDomainControllerPasswordReplicationPolicy

C.
Get-ADDomainControllerPasswordReplicationPolicyUsage

D.
Get-ADDomain

E.
Get-ADOptionalFeature

Explanation:
The Get-ADOptionalFeature cmdlet gets an optional feature or performs a search to retrieve multiple optional
features from an Active Directory.
Example: Get a specified optional feature
This command gets the optional feature with the name Recycle Bin Feature.
Windows PowerShell
PS C:\\> Get-ADOptionalFeature -Identity ‘Recycle Bin Feature’
Get-ADOptionalFeature
https://technet.microsoft.com/en-us/library/hh852212(v=wps.630).aspx