The network access layer equivalent to the physical and data link layers of the osi model. basically this layer defines how data is physically sent through the network.
There are several OSI and TCP/IP model video tutorials online.
signaling
What is the purpose of the TCP/IP Network Access layer
The IP address of course! Think about it. It's on the network layer, It is unique, and it's assigned to every device on the internet!
INTERNET
congestion is Traffic in excess of network capacity. it occurs network layer and it is one of the function of network layer.
Network interface
fer'abd;lb,b,teabfd
Network Interface Layer
Router is a Layer 3 (Network Layer)device that checks packet's IP Address at input interface & routes them to interface connected to destination network if available.
application layer
The data-link layer The physical layer
The interface between the physical layer and the network link layer.