Physical and Datalink Layers. 3 Lectures 1. Physical layer. Application 2. Datalink layer Presentation introduction, framing, error coding, switched Session networks Transport roadcast-networks Network home networking Datalink Physical 22 Physical and Datalink Layers: 3 Lectures 1. Physical layer. 2. Datalink layer introduction, framing, error coding, switched networks. 3. Broadcast-networks, home networking. Application Presentation Session Transport Network Datalink Physical