Network Engineer Question:

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Do you know what is project 802?

Network Engineer Interview Question
Network Engineer Interview Question

Answer:

It is a project started by IEEE to set standards to enable intercommunication between equipment from a variety of manufacturers. It is a way for specifying functions of the physical layer, the data link layer and to some extent the network layer to allow for inter-connectivity of major LAN protocols.
It consists of the following:
☛ 802.1 is an inter-networking standard for compatibility of different LANs and MANs across protocols.
☛ 802.2 Logical link control (LLC) is the upper sub-layer of the data link layer which is non-architecture-specific, that is remains the same for all IEEE-defined LANs.
☛ Media access control (MAC) is the lower sub-layer of the data link layer that contains some distinct modules each carrying proprietary information specific to the LAN product being used. The modules are Ethernet LAN (802.3), Token ring LAN (802.4), Token bus LAN (802.5).
☛ 802.6 is distributed queue dual bus (DQDB) designed to be used in MANs.

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