What is the definition MAC and LLC?
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I fail to understand the meaning and importance. Please explain in layman’s language.
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Actually, original ethernet header i.e 802.3 is known as MAC[ Media Access Control ] layer. But that header doesn't have any field to represent the encapsulated protocol inside frame / don't have any field to identify the upper layer protocol. Just to represent the encapsulated data or upper layer protocols one new layer is added i.e LLC [ Logical Link Control ] Layer.
-> MAC layer contains source mac, destination mac and length field.
->LLC layer is TYPE field actually.
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