Final answer:
The HTTP message GET/HTTP/1.1 sent to the VM server in a network frame is contained in the payload part of the frame.
Step-by-step explanation:
The part of a network frame that contains the HTTP message GET/HTTP/1.1 sent by your host to the VM server is the payload. The payload is where the actual data is carried in a network packet or frame. This is distinct from the header, which contains control information, and the trailer, which usually contains information to check for errors in transmission. The data-link layer is even broader and refers to the protocols and elements in the second layer of the OSI model that handle the communication between adjacent network nodes.