What is "DSC" and a second question in Description

I am running computer name WS2012-001 as a DC, WS2012-001 as a member, and W70001 as a member in a VMWare Workstation12 virtual environment on a W7 platform.

I can connect from WS2012-001 to either WS2012-002 or W70001 and successfully run this command: get-eventlog -security -newest 10.

I can disconnect and successfully run this command: get-eventlog security -newest 10 -computername WS2012-001.

However, if I try this command: get-eventlog security -newest 10 -computername W70001, I get the error, network path not found.

Can you please tell me why?

Thank you,

David Adams