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UNIT 2 Medium Access sub layer: Medium Access sub layer - Channel Allocations, LAN protocols - ALOHA protocols(PURE AND SLOTTED ALOHA),CSMA/CA,CSMA/CD - Overview of ...
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Data Link Layer Services and Protocols Arzad A. Kherani (alam@cse.iitd.ac.in) Dept. of Computer Sc. And Engg. Indian Institute of Technology Delhi
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Provides a capability for higher-layer entities to send 'packets' ... packet is itself encapsulated into a 'frame', adding to it 'header' and 'trailer' ...
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Chapter 5 Peer-to-Peer Protocols and Data Link Layer PART I: Peer-to-Peer Protocols 5.1 Peer-to-Peer Protocols and Service Models 5.2 ARQ Protocols and Reliable Data ...
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... Synchronous Communications protocol (Bisync): character-oriented data link control ... Protocol (RFC 1350): simple protocol for file transfer over UDP ...
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to a group of data bits add a single extra bit, known as the parity bit. ... example: data bits 0011001; add parity bit 1 --- 00110011. exercise: construct a FSM to ...
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Perform error control at every hop in the network or only between the source and destination? ... Data Link operates over wire-like, directly-connected systems ...
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Data Link Layer Two sublayer: Medium access sublayer (MAC) Logical link control (LLC)
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Data Link Layer Dr. Oualid Ben Ali 4 - *
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Data Link Protocols Reliable FIFO communication using less reliable channels By Ken Schmidt
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Data Link Layer: Part 2 Broadcast LAN and Media Access Control Taxonomy of MAC Protocols Random Access: Aloha and slotted Aloha CDMA and CDMA/CD Ethernet and Its ...
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Chapter 5: The Data Link Layer Our goals: understand principles behind data link layer services: error detection, correction sharing a broadcast channel: multiple access
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Chapter 5: The Data Link Layer Our goals: understand principles behind data link layer services: error detection, correction sharing a broadcast channel: multiple access
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Chapter 5: The Data Link Layer Our goals: understand principles behind data link layer services: error detection, correction sharing a broadcast channel: multiple access
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The receiver divides the incoming frame by the same number ... CRC is used by all advanced data link protocols, for the following reasons: ...
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Computer Network The Data Link Layer * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Go Back N (1) Based on sliding window If no error, ACK as usual with ...
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OSI data link layer CCNA Exploration Semester 1 Chapter 7 OSI data link layer OSI model layer 2 TCP/IP model part of Network Access layer Data link layer topics Data ...
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What the IEEE standard covers- Physical layer and. interface to ... CSMA/CD 'Carrier Sense/Multiple Access. with Collision Detection' ... CSMA/CD - A ...
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Chapter 5: The Data Link Layer Our goals: understand principles behind data link layer services: error detection, correction sharing a broadcast channel: multiple access
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Model for Frame Transmission over a link. Frame lost: (error in start flag) ... When it becomes ready, RX must send a normal acknowledge (RR 5) later for TX to ...
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The router removes the old frame and adds a new header and trailer for the next hop. ... Half duplex: data can only travel one way at a time so one device can ...
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travel agent = routing algorithm. 5: DataLink Layer. 5-5. Link ... encapsulate datagram into frame, adding header, trailer. channel access if shared medium ' ...
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(b) Four examples of byte sequences before and after stuffing. ... Bit stuffing (a) The original data. (b) The data as they appear on the line. ...
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A data link protocol is the set of rules used to send data over an ... Start countdown to timeout event k (timeout period is a system parameter). Stop timer k. ...
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Frequency or time-division multiplexing can be used to share links in such a network ... Twisted pair is called a logical star topology, while still a physical ...
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Chapter 5: The Data Link Layer Application Transport Network data link layer service Moving data between nearby network elements Move data between end-host and router
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Services: reliably deliver a data link packet between two physically connected machines ... slot size equals fixed packet transmission time ...
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single active node can continuously transmit at full rate of channel. highly decentralized: only slots in nodes need to be in sync. simple. Cons ...
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Use SPIN to model-check successively more complex protocols ... Just set a timer on the sender, if the timer buzzes resend. Why doesn't that work? ...
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Framing and link access: encapsulate datagram into frame adding header and ... protects users from interference and jamming (used in WW II) ...
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Chapter 5: The Data Link Layer Application Transport Network data link layer service Moving data between nearby network elements Move data between end-host and router
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Chapter 4 Data Link Layer Framing Error control Flow control Multiplexing Link Maintenance Security Services Transfers frames across direct connections Directly ...
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Chapter 3: Signals and their transmission over ... Chapter 6: Data Communication: Synchronization, Error ... Tf = LTb = L/R. 10. Data Fragmentation ...
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Chapter 5: The Data Link Layer Our goals: understand principles behind data link layer services: error detection, correction sharing a broadcast channel: multiple access
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reliable data transfer, flow control: done! ... encapsulate datagram into frame, adding header, trailer. channel access if shared medium ' ...
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Chapter 5: The Data Link Layer Application Transport Network data link layer service Moving data between nearby network elements Move data between end-host and router
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Bit stream is broken into discrete frames: consists of bit ... bit stuffing is needed. Physical layer coding violations. SD. Data. FCS. ED. SD = start delimiter ...
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travel agent = routing algorithm. DataLink Layer. 5-5. Link Layer ... encapsulate datagram into frame, adding header, trailer. channel access if shared medium ' ...
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to a group of data bits add a single extra bit, known as the parity bit. ... CFSM specification, AB protocol. reachability analysis. efficiency. protocol specification ...
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To implement a simple concurrent server and clients having four emulated network ... Disassemble and assemble packets from Msg. No ACK in this layer ...
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understand principles behind data link layer services: error ... Two Dimensional Bit Parity: Detect and correct single bit errors. 0. 0. 5: DataLink Layer ...
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... Link Control (SDLC) ... SDLC is capable of supporting both half-duplex and full-duplex ... Extended address: SDLC allows for an 8-bit address, whereas HDLC ...
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The Data-Link Layer: Ethernet, ARP and LANs Based on s from the Computer Networking: A Top Down Approach Featuring the Internet by Kurose and Ross
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Typical questions here ar e how many volts should be used to represent a 1 and ... For IP over ATM, ATM is viewed by IP as a a data link layer ...
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Creating the illusion of a reliable link. 5. Modes of Operation. Simplex. Half Duplex ... Simplex Transmission. Data: one way only. One-Way Street. Data. Link ...
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p until success. 5: DataLink Layer. 5-22. Pure (unslotted) ALOHA ... A wants to send datagram to B, and B's MAC address not in A's ARP table. ...
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travel agent = routing algorithm. 5: DataLink Layer. 5-4. Link ... encapsulate datagram into frame, adding header, trailer. channel access if shared medium ' ...
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binary countdown protocol (log2n bits); dash indicates silence. (AND ... random backoff (countdown proceeds while channel is idle) 802.11 distribution services ...
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instantiation and implementation of various link layer ... encapsulate datagram into frame, adding header, trailer. channel access if shared medium ' ...
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CS4514 HELP Session 3 Concurrent Server Using Selective Repeat Data Link Layer Mingzhe Li lmz@cs.wpi.edu 12/05/2005 Description Objective: To implement a simple ...
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reliable data transfer, flow control: done! ... limo: Princeton to JFK. plane: JFK to Geneva. train: Geneva to Lausanne. tourist = datagram ...
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wireless links: high error rates. Q: why both link-level and end-end reliability? ... no collision, node can send new frame in next slot ...
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wireless links: high error rates. Q: why both link-level and end-end reliability? ... node with new arriving pkt: transmit at beginning of next slot ...
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reliable data transfer, flow control: done! ... encapsulate datagram into frame, adding header, trailer. channel access if shared medium ...
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UNIT VI: Advance Network Technologies Virtualization, Software defined network, ATM (Overview, Protocol Architecture, AAL), GMPLS, Introduction of optical networks ...
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travel agent = routing algorithm. 5: DataLink Layer. 7. Comp 361, ... encapsulate datagram into frame, adding header, trailer. channel access if shared medium ...
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