Layers 7 through 4 are geared more to the application than the lower layers, which are designed to move packets from one place to another no matter what they contain. This top layer defines the ...
A SpaceX Falcon 9 rocket on Sept. 10, 2025, launched 21 satellites for the Space Development Agency's Tranche 1 Transport Layer from Vandenberg Space Force Base, California. Credit: SpaceX WASHINGTON ...