You configure a SharePoint Server 2013 Service Pack1 (SP1) server farm. You need to
gather data from existing logs on warning events only. What should you do?

A.
Run the following Windows PowerShell cmdlet:
Get-SPLogEvent | Where-Objects{$_.Level -eq Warning}

B.
From Central Administration, go to Configure Diagnostic Logging and set the Least critical event to report to
the event loglist to Warning

C.
Run the following Windows PowerShell cmdlet:
Get-SPLogEvent | Out-GridView

D.
Run the following Windows PowerShell cmdlet:
Get-SPLogLevel -Identity “Warning Issues”

Explanation:
–EXAMPLE 5—————–Get-SPLogEvent | Where-Object {$_.Level -eq “Error”-and {$_.Area -eq “SharePoint Foundation “}
This example returns all error entries related to SharePoint Foundation.
http://technet.microsoft.com/en-us/library/ff607589.aspx