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The PDU at the Transport layer is called?

The PDU (protocol data unit) @ transport layer (e.g. TCP or UDP) is called as 'segment' .


What is the maximum size of data that the application layer can pass on to the TCP layer below?

2^16 bytes - size of TCP header


What is a PDU?

In networking, PDU means "protocol data unit", and it is the generic name of the "packets" of data used at different levels of the network. Using the numbering of the OSI layers: At layer 2, the PDUs are called "frame". Example: An Ethernet frame, a frame-relay frame. At layer 3, the PDUs are called "packets". Example: An IP packet. At layer 4, the PDUs are called "segments". Example: A TCP segment, a UDP segment.


What are true statements about transport layer protocols?

**The TCP transport layer protocol uses windowing and acknowledgments for reliable transfer of data. **The TCP and UDP port numbers are used by application layer protocols. **The TCP transport layer protocol provides services to direct the data packets to their destination hosts.


What is the PDU at each layer?

Application layer: Data Presentation layer: Data Session layer: Data Transport layer: Segment (TCP) or Datagram (UDP) Network layer: Packet Data Link layer: Frame Physical layer: Bit


The network interface TCP-IP layer maps to which OSI layers?

The data-link layer The physical layer


Operates at the transport layer of the osi model and provides reliable data delivery services?

TCP The three way handshake verifies that data arrived


What is the layer 4 TCP PDU called?

Segements


Which OSI layer does TCP operate?

TCP and UDP are transport layer protocols; the OSI layer is layer 4 (transport)


Which tcp-ip layer maps to the physical and data link layers of the osi model?

The Network Interface layer


What accurately describes tcp and udp?

TCP and UDP are two different layer 4 protocols. TCP reliably sends data with acknowledgments and UDP sends data without checking if the destination received it. Skype uses UDP while email uses TCP.


Which tcp ip model layer takes a large chunk of data from the application layer and breaks it into smaller segments?

internetwork