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In the context of smart cards, an application protocol data unit 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.
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What is protocol data unit?
data reassembled at the destination =))
The Application layer separates data into or discrete amounts of data?
PDU (protocol data units) -Yuriy-
What is pdu encapsulation?
protocol data unit
Term used for a data packet often implying a specific layer or protocol?
Protocol Data Unit (PDU)
What is an APDU?
The APDU (Application Protocol Data Unit) is the communication unit between a reader and a card. The structure of an APDU is defined by the ISO 7816 standards. There are two categories of APDUs: command APDUs and response APDUs. As the name implies, the former is sent by the reader to the card: it contains a mandatory 5-byte header and from 0 to up to 255 bytes of data. The latter is sent by the card to the reader: it contains a mandatory 2-byte status word and from 0 to up to 256 bytes of data. The APDU is an application level protocol as specified in the ISO 7816-4, which takes place between a smart card and a host application for the communication purpose.
What Protocol Data Unit is employed at the Transport Layer?
PACKETS
What is the Protocol data unit at the network layer?
frame
Explain about protocol data unitidentify PDU in each layer of OSI?
A Protocol Data Unit (PDU) is a unit of data specified in a protocol of a given layer of the OSI model. Each layer has its own PDU: at the Application layer, it's called a message; at the Transport layer, it's a segment (or datagram in UDP); at the Network layer, it's a packet; at the Data Link layer, it's a frame; and at the Physical layer, it's a bit or symbol. These PDUs help in managing and encapsulating data as it traverses through the layers of the OSI model.
Which transport layer protocol assures both reliable and rapid delivery of the data sent to it by the application layer?
TCP protocol insures that your data was delivered in reliable and rapid way.
What two ways can a unit of data be sent across a network?
1 tcp transmission control protocol 2 udp protocol
What is the general term used to describe a piece of data at any layer of a networking model?
Packet
Which transport layer protocol is used when an application requires acknowledgment that data has been delivered?
tcp
