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The data link layer transforms the physical layer, raw transmission facility, to a reliable link. Data link layer enables physical layer appear error free to upper layer (network layer). A data link layer is responsible for moving frames from one hop to the next. Responsibilities of data link layer: Framing: The data link layer divides stream of bits received from the network layer into manageable data units called frames. Physical addressing: If frames are to be distributed to different systems on the network, this layer adds a header to the frame to define the sender or receiver of the frame. Frame is intended for a system outside the sender’s network, receiver address is the address of the device that connects the network to the next one. Flow control: If the rate at which data is taken by the receiver is less than the rate at which data are produced in the sender, and then the data link layer imposes a flow control mechanism to avoid overwhelming the receiver. Error Control: The data link layer adds reliability to the physical layer by adding mechanisms to detect and retransmit damaged or lost frames. Data link layer use a mechanism to recognize duplicate frames. The error control is normally achieved through a trailer added to the end of frame. Access Control: When two or more devices are connected to same link, data link layer protocols are necessary to determine which device has control over the link at any given time. Hop to Hop delivery: Data Link Layer Homework Help Tutors, at the ComputerNetworkHomeworkHelp, take pledge to provide full satisfaction and assurance in Data link Layer homework help via online tutoring. The students are getting 100% satisfaction by online tutors across the globe. You can get homework help for Data link Layer, project ideas and tutorials on this platform. We provide email based Data link Layer homework. You can join us to ask queries 24×7 with live, qualified and experienced online tutors specialized in Data link Layer. By the way of Online Tutoring, student would be able to complete your homework or assignments at your home. The tutors at the ComputerNetworkHomeworkHelp are committed to provide the best quality online tutoring assistance for Data link Layer homework help and Data link Layer project help,Data link Layer programming help, Data link Layer report write-up services with no plagiarism. Tutors use their experience, as they have solved thousands of the Data link Layer assignments that may help you to solve your complex issues of Data link Layer. ComputerNetworkHomeworkHelp assure for the best quality compliance to your homework. Whenever we feel we are not able to provide the Data link Layer homework help as per the deadline or given instruction by the student, and then we refund the money of the student without any delay. You can either upload or email...
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