Exam Cybersecurity Fundamentals Specialist topic 1 question 45 discussion

The second of these layers is the Data Link layer (DLL), located between the physical layer (first layer) and the network layer (third layer). The Internet consists of many hosts and connected devices known as the nodes and networks known as the links. The DLL creates and delivers frames from one node to another along a link. The main functions of the DLL are: Framing (Packetizing) Flow Control Error Control Congestion Control The DLL is divided into two sub-layers to organize its operations and the services provided: Logical Link Control (LLC) Media Access Control (MAC)