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GDB Solution CS601 not exceed 5Lines

Dada link layer divided into TWO sub layers. (1) LLC ensures reliability of physical connection at layer1.Protocol IEEE 802.3 most commonly used standard. PPP is important standard at this OSI level it used for communication across point-to-point link. Also important in WAN.

(2)MAC used how workstations cooperatively share transmission media. IEEE 802.3 standard specifies a medium-access method known as carrier sense multiple access with collision detection (CSMA/CD).

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CS601 GDB

As the data link layer has become more effecient by comporising Logical link control (LLC) and Media access control (MCC),
becuase Logical link control contains framing error control and flow control of the TX medium and has ability to work with all LANs and additionally Media access control make it more comprihensive by managing media related issues.




This is just idea work accordingly
Because the Data Link Layer is Layer 2 of the seven-layer OSI model of computer networking. It corresponds to or is part of the link layer of the TCP/IP reference model.
The Data Link Layer provides the functional and procedural means to transfer data between network entities and might provide the means to detect and possibly correct errors that may occur in the Physical Layer. The Data Link Layer is concerned with local delivery of frames between devices on the same LAN. Data Link frames, as these protocol data units are called, do not cross the boundaries of a local network. Internetwork routing and global addressing are higher layer functions, allowing Data Link protocols to focus on local delivery, addressing, and media arbitration. In this way, the
Data Link layer is analogous to a neighborhood traffic cop; it endeavors to arbitrate between parties contending for access to a medium. The data link thus provides data transfer across the physical link. That transfer can be reliable or unreliable; many data link protocols do not have acknowledgments of successful frame reception and acceptance, and some data link protocols might not even have any form of checksum to check for transmission errors. In those cases, higher-level protocols must provide flow control, error checking, and acknowledgments and retransmission. The Data Link Layer protocols respond to service requests from the Network Layer and they perform their function by issuing service requests to the Physical Layer. The Data Link Layer is often implemented in software as a "network card driver". The operating system will have a defined software interface between the data link and the network transport stack above.
This interface is not a layer itself, but rather a definition for interfacing between layers.
The data link thus provides data transfer across the physical link. That transfer can be reliable or unreliable; many data link protocols do not have acknowledgments of successful frame reception and acceptance, and some data link protocols might not even have any form of checksum to check for transmission errors. In those cases, higher-level protocols must provide flow control, error checking, and acknowledgments and retransmission.

As we know that Data link layer is second hierarchical layer of hierarchical model which is dealing the physical addresses i.e. hex in the network. it interfaces the physical layer and in other end dealing the network layer so to interconnect the physical layer we are using MAC sublayer and LLC to network layer. And these layers are sublayer of Data link. Which provide the interoperability. Because in data encapsulation in the transmission we must need the interoperability
NIce Keep it up :-)

MUHAMMAD ASIF NAZIR said:
Because the Data Link Layer is Layer 2 of the seven-layer OSI model of computer networking. It corresponds to or is part of the link layer of the TCP/IP reference model.
The Data Link Layer provides the functional and procedural means to transfer data between network entities and might provide the means to detect and possibly correct errors that may occur in the Physical Layer. The Data Link Layer is concerned with local delivery of frames between devices on the same LAN. Data Link frames, as these protocol data units are called, do not cross the boundaries of a local network. Internetwork routing and global addressing are higher layer functions, allowing Data Link protocols to focus on local delivery, addressing, and media arbitration. In this way, the
Data Link layer is analogous to a neighborhood traffic cop; it endeavors to arbitrate between parties contending for access to a medium. The data link thus provides data transfer across the physical link. That transfer can be reliable or unreliable; many data link protocols do not have acknowledgments of successful frame reception and acceptance, and some data link protocols might not even have any form of checksum to check for transmission errors. In those cases, higher-level protocols must provide flow control, error checking, and acknowledgments and retransmission. The Data Link Layer protocols respond to service requests from the Network Layer and they perform their function by issuing service requests to the Physical Layer. The Data Link Layer is often implemented in software as a "network card driver". The operating system will have a defined software interface between the data link and the network transport stack above.
This interface is not a layer itself, but rather a definition for interfacing between layers.
The data link thus provides data transfer across the physical link. That transfer can be reliable or unreliable; many data link protocols do not have acknowledgments of successful frame reception and acceptance, and some data link protocols might not even have any form of checksum to check for transmission errors. In those cases, higher-level protocols must provide flow control, error checking, and acknowledgments and retransmission.

As we know that Data link layer is second hierarchical layer of hierarchical model which is dealing the physical addresses i.e. hex in the network. it interfaces the physical layer and in other end dealing the network layer so to interconnect the physical layer we are using MAC sublayer and LLC to network layer. And these layers are sublayer of Data link. Which provide the interoperability. Because in data encapsulation in the transmission we must need the interoperability

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