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The Physical Link  Layer provides the much needed medium for communication of data. In other words, how to go about infrastructural support  is  detailed by the Physical Link Layer.  The Physical Link Layer serves to provide the information for placement of real world communication facilities. These communication facilities are the fundamental requirements of the communication process.  Many theoretical studies, and conceptual analysis stand proven by studying the implementation of the PPhysical Link Layer. The Layer speaks to us to how to apply the skills related to plugging. The manner in which we should put subtlety to good use vis-a-vis connectors is explained to us.  The details of socket connection is stated by the Physical Layer. How to make cable adjustments is narrated. Top to bottom requirements of connection establishment and its orientation is made clear to us. The main focus of the Physical  Link Layer is on ensuring the success of the com...

The Data Link Layer is responsible for establishing the communication path. Data Frames, constructed as dictated by the Layer,  travel on the established path. This communication path is supported by the physical medium. The path is free from errors. In other words, the communication path that is established has a high degree of reliability.  A standard exists for organizing the data into frames. We say that the Data Link Layer specifies a standard for framing messages.  The correctness of messages is ensured by the Data Link Layer. This helps to preserve the integrity of Network Transmissions.  It must be said that framing of messages serves the purpose of correctness of Data that is received. The correctness of received messages is the advantage that is  earned by framing of messages using the Data Link Layer. It can be drawn that framing activity that is articulated by the Data Link Layer is marked by effectiveness. It serves to enable error free Data Communi...

T he Presentation Control Layer is a part of the OSI Reference Model. It is the second Layer from the top.  This Layer provides services to the Application/User Layer that lies above.  The presentations to the Application/User Layer are controlled by the Presentation Control Layer. Exchange of information occurs between the Application/User Layer and the Presentation Control Layer. The Application/User Layer requires to be supported with  suitable Data. The Presentation Control Layer supports the Application/User Layer to perform interpretation of Data. The support required by the Application/User Layer to perform interpretation arises because of different forms of Data.  Yes, a piece of Data can be represented in various ways. The various forms of Data present a variety of Data before us. It is to mention that the Application/User Layer is presented with Computer Program and Data. The Presentation Control Layer is responsible for these presentations. Computer Progra...