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Q. What is data link of osi model?
- The data link layer offers access to the networking media and physical transmission across the media and this enables the data to locate its intended destination on a network.
- The data link layer offers reliable transit of data across a physical link by using the Media Access Control (MAC) addresses.
- The data link layer utilizes the MAC address to define a hardware or data link address in order for multiple stations to share the same medium and still uniquely identify each other.
- Concerned with network access, network topology, error notification, ordered delivery of frames and flow control.
- Instances Frame Relay, Ethernet and FDDI
a) Used for sending e-mail. b) Uses port 25.
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