Keyword Analysis & Research: application protocol data unit

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What are the protocol data units for the Internet Protocol Suite?

Protocol data units for the Internet protocol suite are: The transport layer PDU is the TCP segment for TCP, and the datagram for UDP. The Internet layer PDU is the packet. The link layer PDU is the frame. On TCP/IP over Ethernet, the data on the physical layer is carried in Ethernet frames .

What is an application protocol data unit (APDU)?

In the context of smart cards, an application protocol data unit (APDU) is the communication unit between a smart card reader and a smart card. The structure of the APDU is defined by ISO/IEC 7816-4 Organization, security and commands for interchange. There are two categories of APDUs: command APDUs and response APDUs.

What are the protocol data units of the OSI model?

Protocol data units of the OSI model are: The Layer 4: Transport Layer PDU is the network segment or the datagram. The Layer 3: Network Layer PDU is the packet. The Layer 2: Data Link Layer PDU is the frame. The Layer 1: Physical Layer PDU is the bit or, more generally, symbol.

How does the protocol data unit change between layers?

As you can see, the protocol data unit changes between the seven different layers. The resulting information that is transferred from the application layer to the physical layer (and vice versa) is not altered, but the dataundergoes a transformation in the process. The PDU defines the state of the data as it moves from one layer to the next.

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