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Role of the Physical Layer, Data Link Layer and Network Layer for the in Network Transmissions for Dotcom

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Role of the Physical Layer, Data Link Layer and Network Layer for the in Network Transmissions for Dotcom
Role of the Physical Layer, Data Link Layer and Network layer for the in Network Transmissions for DotCom

The Role of the Physical Layer, Data Link Layer and Network layer for the in Network Transmissions for DotCom As the Network Manager of NotCom, my goal is to plan and implement the corporate network services strategy that is the best fit for the future needs of the organization as the growth from 20 to 150 employees is realized. To reiterate, all employees have PCs that are a part of a local area network (LAN) and running variations of Windows or UNIX and TCP/IP and current internet access uses nearly the entire bandwidth of the 128 kbps DSL line provided by a local ISP and the phone system is a simple business line with the main company number plus two extensions. In researching the available technologies for possible application for the company, the role of the physical layer, data link layer, and network layer in network transmissions of vital importance. This paper will be discussing in the physical layer, the contrast of circuit switching and packet switching; in the data link layer, sliding window protocols and the data link layer in the internet; and for the network layer, virtual circuits and datagram will be discussed as well as the purpose of routing algorithms. The physical layer is the hardware of the system and can consist of a network adaptor or network interface card (NIC) that is a circuit board that plugs into the client machine and server in the local area network (LAN); it can be built into the motherboard of the central processing unit (CPU). The network adaptor controls the transmission and receipt of the data at the data link and physical layer. The decision for NotCom will be the use of circuit switching or packet switching, which uses two different technologies for sending data from one point to another and each, has advantages and disadvantages. Packet switching breaks the data into small packets that are sent


References: Data Link Layer. (2010). Retrieved from http://www.authorstream.com/Presentation/karthisivasamy-446496-data-link-layer-sliding-window-ppt/ Datagram Versus Virtual Circuit. (1996). Retrieved from http://cs.uccs.edu/~cs522/F99rout.PDF
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