In network communication, this starts in the second. Data communication and computer networks pdf notes dccn notes sorry download link file is not available. The data link layer, or layer 2, is the second layer of the sevenlayer osi model of computer networking. Data link layer protocols free download as powerpoint presentation. Pdf data link layer is the protocol layer which transfers data between connected networks. The data link layer is the protocol layer in a program that handles the moving of. Examples of datalink layer protocols are ethernet ieee 802.
In networking and communications, the transmission of a unit of data frame, packet from one node to another. The remote network layer peer should receive the identical message generated by the sender e. The course comes with full access to download the videos. This layer is the protocol layer that transfers data. Youget youget is a small commandline utility for downloading media video, audio and images from the web. Data communication and computer networks pdf notes dccn. Examples of link layer protocols include ethernet, token ring, fddi, and ppp. The data link layer provides service to the network layer above it. Your browser does not currently recognize any of the video formats available.
Data link layer protocols data link layer protocols the data link layer provides service to the network layer above it. As the second layer in the osi model, the data link layer is very strict on protecting the data that is passed to the network. A data link layer protocol is a protocol that is run to support the link layer, or directly on top of the link layer. It detects bit error introduced by the communication channel and delivers only good blocks those without errors. Data link layer protocols transmission control protocol. Protocol is a set of rules that helps to control data communication. The data link layer ensures that all packets of information are passed on free of errors. Spanning tree protocol and rapid spanning tree protocol are the canonical examples. One could also argue that address resolution protocol, which bridges between the link layer and the network layer and runs on top of the link layer is a link layer protocol. Data link layer silvia giordano ica, epfl the data link layeris responsible for transferring a datagram across an individual link. Pdf implementation of data link control protocols in wired network. Hdlc stands for highlevel data link control protocol. The data link layer is layer 2 in the open systems interconnection architecture model for a set of telecommunication protocols. There are numerous protocols in place to assist with this responsibility.
The data link layer also determines how devices recover from collisions that. The data link layer is the protocol layer in a program that handles the moving of data into and out of a physical link in a network. It makes sure the appropriate physical protocol is assigned to the data. A presentation about the data link layer of the osi reference model.
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