The lower sublayer of the IEEE Project 802 model for the OSI model's Data Link Layer. The maximum frame size allowed to be transmitted across a network medium. It handles error-free delivery and controls the flow of frames between sender and receiver across a network. The upper sublayer of the IEEE Project 802 model for the OSI model's Data Link Layer. The international standards-setting body based in Geneva, Switzerland, that sets worldwide technology standards. International Organization for Standardization (ISO) Representing 0s and 1s as a physical signal, such as electrical voltage or a light pulse. The process of stripping the header from a PDU as it makes its way up the communication layers before being passed to the next higher layer. Layer 2 in the OSI model is repsonisble for managing access to the network medium and delivery of data frames from sender to receiver or from sender to an intermediate device, such as a router. Layer 7 in OSI model provides interfaces that enable applications to request and receive network services. In the context of the Networking layer and routing, the process by which a router consults a list of rules before forwarding and incoming packet.The rules determine whether a packet meeting certain criteria (such as source and destination address) should be permitted to reach the intended destination.
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