Hub and spoke - A central site interconnects branch sites using point-to-point links, MAC sublayer - A sublayer is responsible for data encapsulation and media access control, LLC sublayer - Communicates between the networking software at the upper layers and the device hardware at the lower layers, Physical topology - Physical connections and how devices are interconnected, Logical topology - Virtual connections between devices using device interfaces and IP addressing schemes, Frame - An encapsulated data by the data link layer with a header and a trailer, Wireless Access Point (AP) - Concentrates the wireless signals from users and connects to the existing copper-based network infrastructure, such as Ethernet,

DFC20143 ITN Revision Ch2.2(2.2.1&2.2.2) : Function of the data link layer and basic characteristics of MAC

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