Data Link Layer
Question
Which layer of the OSI model defines how data is formatted for transmission and how access to the physical media is controlled?
Answers
Explanations
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A. B. C. D.B.
https://itcertzone.wordpress.com/2011/01/24/the-seven-layers-of-the-osi-model/#:~:text=Layer%202%3A%20The%20Data%20Link,reliable%The layer of the OSI model that defines how data is formatted for transmission and how access to the physical media is controlled is the Data Link layer.
The Data Link layer is the second layer of the OSI model and is responsible for providing reliable, error-free communication between two network nodes that are directly connected. It defines the format and protocols used to transmit data over the physical medium, including the type of cables, connectors, and other physical components used.
The Data Link layer is further divided into two sublayers: the Logical Link Control (LLC) sublayer and the Media Access Control (MAC) sublayer.
The LLC sublayer provides a common interface for the network layer and is responsible for identifying different network protocols, error checking, and flow control. The MAC sublayer is responsible for controlling access to the physical media and managing the transmission of data frames between network nodes.
In summary, the Data Link layer of the OSI model provides a reliable and error-free communication channel between directly connected network nodes by defining the format and protocols used to transmit data over the physical medium and controlling access to that medium through the MAC sublayer.
