When designing a network, it is important to come up with a good data link layer. Fundamentally, network design refers to the planning of the implementation of a computer network infrastructure. Moreover, designing a network takes place before the implementation of a network infrastructure. It involves evaluating, scoping, and understanding the network to implement. Furthermore, it is a category of systems design that deals with data transport mechanisms. The goal of network design is to satisfy the data communication requirements while minimizing expenses. Additionally, the scope of the requirements of a network design project may vary.
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THE ESSENTIAL LAYERS OF DESIGNING A NETWORK
The open systems interconnection model is an essential part of designing a network. It consists of seven layers. These include the physical layer, network layer, transport layer, session layer, presentation layer, data link layer, and application layer. Primarily, the physical layer is part of a network infrastructure that refers to all the hardware and equipment that a network can physically handle. Additionally, it encompasses wireless and electric signals. The data link layer takes protocol data units that the network transfers and prepares them for transmission by a container. Moreover, this layer plays a significant role in wireless technology.
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FUNCTIONS OF THE DATA LINK LAYER
The data link layer receives the streams of bits from the network layer and divides them into manageable data units. Furthermore, it is a crucial element when designing a network as it adds a header to a frame to define the physical address of the sender or the receiver of the frame. Additionally, the data link layer deals with a flow control mechanism to prevent overrunning the receiver in a network infrastructure. Datalink layer protocols determine which device has control over the link at any point in time.
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