It230 Wk1 Checkpoint
OSI Model
Within a network consists of a model that interlinks computers with one another by its methods and protocols, this model is known as the “Open Systems Interconnection (OSI) model”, (2010. PP.28). It is a framework that defines and dissects its methods protocols into another model consisting of seven different layers. Each different layer increases from one layer to the next, all in which rely on the services the lower level provides to the next until data becomes present upon viewing a computer screen. Seven layers defining the “seven-layer model”, (2010. PP.28), are: physical, data-link, network, transport, session, presentation, and application. Each consists of different functions and purposes.
The first layer, physical, obtains a function that has the purpose of sending or receiving data by way of signals or voltages through physical aspects such as, cables or cards. With such data, signals, voltages, physical aspects of cables and cards, it is what is utilized in network connecting. The second layer, data-link, consists of encoded, decoded bits of data packets, which consists also of a management, knowledge transmission-protocol that works in connection with two additional internal layers, “media access control (MAC) layer and the logical link control (LLC) layer”, (2006. PP.S3). Both additional layers serve a function and purpose that determines how data is accessed from a network computer, gives it the data transmit permission, and controls in relation to checking for error(s), controls flow, and synchronization of the frame.
The third layer, network, obtains the function that serves the purpose of switching, routing, forwarding, and creating paths in order to transmit data between nodes. It also has the function and purpose to handle error(s), inter-networking, provides control in areas of congestion, and sequencing packets. Transport as the fourth layer serves as a form of a management tool of information flow between network
Within a network consists of a model that interlinks computers with one another by its methods and protocols, this model is known as the “Open Systems Interconnection (OSI) model”, (2010. PP.28). It is a framework that defines and dissects its methods protocols into another model consisting of seven different layers. Each different layer increases from one layer to the next, all in which rely on the services the lower level provides to the next until data becomes present upon viewing a computer screen. Seven layers defining the “seven-layer model”, (2010. PP.28), are: physical, data-link, network, transport, session, presentation, and application. Each consists of different functions and purposes.
The first layer, physical, obtains a function that has the purpose of sending or receiving data by way of signals or voltages through physical aspects such as, cables or cards. With such data, signals, voltages, physical aspects of cables and cards, it is what is utilized in network connecting. The second layer, data-link, consists of encoded, decoded bits of data packets, which consists also of a management, knowledge transmission-protocol that works in connection with two additional internal layers, “media access control (MAC) layer and the logical link control (LLC) layer”, (2006. PP.S3). Both additional layers serve a function and purpose that determines how data is accessed from a network computer, gives it the data transmit permission, and controls in relation to checking for error(s), controls flow, and synchronization of the frame.
The third layer, network, obtains the function that serves the purpose of switching, routing, forwarding, and creating paths in order to transmit data between nodes. It also has the function and purpose to handle error(s), inter-networking, provides control in areas of congestion, and sequencing packets. Transport as the fourth layer serves as a form of a management tool of information flow between network
References: Hallberg, B.A. (2010). Networking: A beginner’s guide (5th ed.). New York, NY: McGraw-Hill. https://portal.phoenix.edu/classroom/coursematerials/it_230/20130715/OSIRIS:45023271 The Seven Layers of the OSI Model. (2006). Wireless Design & Development, 14(5), S3. http://web.ebscohost.com.ezproxy.apollolibrary.com/ehost/pdfviewer/pdfviewer?sid=2a0bbc28-a8fb-4115-bfc9-d4fa93629512%40sessionmgr115&vid=2&hid=127