When a primary device wants to send data to a secondary device, it needs to first send _______ frame. January 8, 2022January 8, 2022 administrator When a primary device wants to send data to a secondary device, it needs to first send _______ frame.ENQWell Done. You are good Data Communication Engineer ! Your Answer is Correct Keep it Up!SELPollACK Share this: Click to share on Facebook (Opens in new window) Facebook Click to share on X (Opens in new window) X Like this:Like Loading...