Packet - Network layer PDUWhat is the protocol data unit (PDU) for the Transport Layer?3.3.1.2Segment - Transport layer PDUWhat is the protocol data unit (PDU) for the Application Layer?3.3.1.2Data - The general term for the PDU used at the application layerWhat order is the Encapsulation process3.3.1.31) Data - User2) Segment - Transport3) Packet - IP4) Frame - EthernetWhat is a physical address?A Physical address is a 48-bit flat address burned into the ROM of the NIC card which is a Layer1 device of the OSI model. This is divided into 24-bit vendor code and 24-bit serial addressWhat is a Logical Address?A Logical address is a 32- bit address assigned to each system in a network. This works in Layer-3 of OSI Model. This would be generally the IP address.The data link layer utilizes what name for its protocol data unit (PDU)? In the OSI model, the first three i.e application layer, presentation layer, session layer are termed as the senior management team, we call these simply by the name PDU’s. But the below bottom layers have names for each PDU(protocol data unit). The bottom layers are the physical layer, data link layer, network layer, and then the transport layer. Each of these layers has different PDU’s. It has separate names at each layer of the OSI model. Let us clearly understand the labels for each of these Protocol data units. The frame is the protocol data unit of layer 2 of the OSI model. And the device that deals with layer 2 to switch is making forwarding decisions based on the layer 2 addresses. The frame is the information that had the layer 2 header. The source and the destination are included inside the header. At the physical layer, it is where we put the data on the wire. We send the series of the data in the form of 0’s and 1’s binary bits. so we call protocol data units of the physical layer the bits since it sends the data in the form of 0’s and 1’s. At the data link layer, we use the things like ethernet, switches, forwarding data. Next is the network layer of the OSI model. The network layer is the packet or a datagram. Most of the time we refer to data as packets in any layer of the OSI model randomly. We can use the term packet generally to refer to any data traffic. But especially, the packet is the layer 3 protocol i.e network layer protocol. As we said earlier, we can also use the term datagram to refer to the data at the network layer. And the last layer that has a name for the separate PDU is the transport layer. At the transport layer, we have segments. The TCP and UDP use the segments. Here we have learned about the different PDUs like bits, frames, packets, or datagrams and then segments. The data link layer is responsible for the node-to-node delivery of the message. The packet received from the network layer is further divided into different frames depending upon the frame size of the network interface. If the frame buffer is full, then the transmission of the data gets stopped. In the data link layer, we use the device like the switches and bridges. Framing is performed at the data link layer. It adds the physical address of the sender or the receiver at each header of the frame. What is the PDU called for the transport layer?For Internet Protocol Suite
The PDU of the Transport Layer is referred to as a segment based on TCP (Transmission Control Protocol) and with UDP (User Datagram Protocol) PDU is referred to as a datagram. The PDU of the Internet Layer is referred to as a packet. The PDU of the Link Layer is referred to as a frame.
What is the PDU of physical layer?A protocol data unit (PDU) is a single unit of information transmitted among peer entities of a computer network. PDU for the physical layer is bits. PDU for the data link layer is a frame.
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