Data Link Layer

Computer Network

Data Link Control

The Data Link Layer provides Data Link Control as a service to ensure reliable data transport over the physical media. In half-duplex transmission mode, for example, one device can only transmit data at a time. If both devices at the end of the link transmit data at the same time, they will collide, resulting in information loss. The data link layer ensures that the devices work together to avoid collisions. Data Link Control and Media Access Control are the two major roles of the Data…

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January 27, 2022
Computer Network

Data Link Layer

The data link layer is the 4th layer from the top and the 2nd layer from the bottom in the OSI model. The communication channel that connects the nearby nodes is known as links, and each datagram needs to be transported via an individual link to get from source to destination. The Data Link Layer's primary responsibility is to transport datagrams across an individual link. The Data Link Layer protocol specifies the packet format and operations like error detection, retransmission, flow control, and random access…

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January 15, 2022