The data link layer, or layer 2, is the second layer of the seven-layer OSI model of computer networking. This layer is the protocol layer that transfers data between nodes on a network segment across the physical layer. The data link layer provides the functional and procedural means to transfer data between network entities and may also provide the means to detect and possibly correct errors that can occur in the physical layer. WebApr 27, 2024 · The Data-link layer is the second layer from the bottom in the OSI (Open System Interconnection) network architecture model. It is responsible for the node-to-node delivery of data. Its major role is to ensure error-free transmission of information. DLL is …
Data Link layer - javatpoint
WebThe Data Link Layer (Layer 2) The Data Link layer also defines a lower level addressing structure to be used between end systems as well as the lower level framing and checksums being used to transmit onto the physical medium. Ethernet, Token Ring, and Frame Relay are all examples of Data Link layer or Layer 2 protocols. WebThe data link layer or layer 2 is the second layer of the seven-layer OSI model of computer networking. This layer is the protocol layer that transfers data between … can heat shrink tubing be cut lengthwise
What is Routing? Definition and Types in Computer …
WebSep 30, 2024 · Access control: When more than two or two devices are connected to the common link, data link layer protocols are necessary to determine which device has control over the link at any point of time. Example : In this figure, a node with physical address 23 sends a frame to a node with physical address 92. WebLAPDm in telecommunications is a data link layer protocol used in GSM cellular networks. LAPDm forms Layer 2 of the Um interface between the Base Transceiver Station and Mobile station, which is to say that it is used in the radio link between the cellular network and the subscriber handset. WebI am taking about the 5 layer model. It is well documented that TCP is a reliable service and IP is best-effort delivery and hence unreliable (ref RFC 792 - TCP).Also, the data link layer is 'reliable' because of its ARQ mechanism guaranteeing sequential delivery of packets ().I cannot make sense of sending packets of reliable service (TCP) on a lower unreliable … can heat pumps heat and cool