The%20OSI%20Stack - The OSI Standard Model of ISO Figure...

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The OSI Standard Model of ISO 2.7 Figure 2.3 The interaction between layers in the OSI model 2.8 Figure 2.4 An exchange using the OSI model -- 7 layers proto stack, with 7 corresponding protocols. -- Peer to peer processes at each layer in different machines.
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1) Physical Layer: PDU N/A, bit stream. 2.10 Figure 2.5 Physical layer Moves bit sequence over a physical link. Defines the following: a) Physical characteristics of EIA interfaces and medium. b) Bit representation: encoding/decoding, electrical/optical. c) Data rate: (b/s) bit TX duration. d) Bits synch: sender and receiver clock synch and same data rate. e) Line configuration: Point-to-point, Multipoint f) Physical Topology: Mesh, ring, bus, and hybrid. g) Transfer mode: Simplex, Fid, and Hid
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Data Link Layer: PDU Î frame with header/trailer , Address Î logical IP address 2.12 Figure 2.6 Data link layer Logic Link Control: a. Framing/Deframing. b. Physical Addressing: Sender/receiver addresses in the frame header. c. Flow Control: To prevent fast sender from flooding a slower receiver with frames. d. Error Control: To Increase physical layer reliability by adding mechanism to detect and ReTx damages and lost frames. (Trailer) Access Control: Control the access to the physical medium among all connected devices. 2.14
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The%20OSI%20Stack - The OSI Standard Model of ISO Figure...

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