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What protocol does 'windows &nbsp;explorer' / 'network neighborhood' use when copying files ?<br />
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I am asking this because I have been using TCP/IP to copy files across un-shared machines for several years thru my Delphi backup application<br />
The speed has been same as regular windows copy.<br />
Today one of my customer's copy is very slow via my application and a 'ping' shows several drops. <br />
But he is saying that copy via windows is fast !
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What protocol does 'windows  explorer' / 'network neighborhood' use when copying files ?

I am asking this because I have been using TCP/IP to copy files across un-shared machines for several years thru my Delphi backup application
The speed has been same as regular windows copy.
Today one of my customer's copy is very slow via my application and a 'ping' shows several drops. 
But he is saying that copy via windows is fast !

What protocol does network neighborhood use when copying files ?

Transmission Control Protocol/Internet Protocol (TCP/IP) is the set of networking protocols that define end-to-end connectivity specifying how data should be packeted, addressed, transmitted, routed and received at the destination. This functionality is organized into four abstraction layers which are used to sort all related protocols according to the scope of networking involved.

TCP/IP

The Windows operating systems have distinct methodologies for designing and implementing networks, and have specific systems to accomplish various networking processes, such as Exchange for email, Sharepoint for shared files and programs, and IIS for delivery of web pages. Microsoft also produces server technologies for networked database use, security and virtualization.