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The Transport Layer
Page 2


The Transport Layer
The Transport Service
 Services Provided to the Upper Layers
 Transport Service Primitives
 Berkeley Sockets
 An Example of Socket Programming:
– An Internet File Server
Page 3


The Transport Layer
The Transport Service
 Services Provided to the Upper Layers
 Transport Service Primitives
 Berkeley Sockets
 An Example of Socket Programming:
– An Internet File Server
Services Provided to the Upper Layers
The network, transport, and application layers.
Page 4


The Transport Layer
The Transport Service
 Services Provided to the Upper Layers
 Transport Service Primitives
 Berkeley Sockets
 An Example of Socket Programming:
– An Internet File Server
Services Provided to the Upper Layers
The network, transport, and application layers.
Transport Service Primitives
The primitives for a simple transport service.
Page 5


The Transport Layer
The Transport Service
 Services Provided to the Upper Layers
 Transport Service Primitives
 Berkeley Sockets
 An Example of Socket Programming:
– An Internet File Server
Services Provided to the Upper Layers
The network, transport, and application layers.
Transport Service Primitives
The primitives for a simple transport service.
Transport Service Primitives (2)
The nesting of TPDUs, packets, and frames.
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FAQs on PPT: Transport Layer - Computer Networks - Computer Science Engineering (CSE)

1. What is the transport layer in networking?
Ans. The transport layer is a layer in the networking protocol stack that provides end-to-end communication between two hosts over a network. It is responsible for breaking down the data into smaller units called segments and ensuring reliable delivery of these segments to the destination.
2. What are the key functions of the transport layer?
Ans. The transport layer performs several important functions, including segmenting data from the application layer into smaller chunks, providing flow control to prevent overwhelming the receiving host, ensuring reliable delivery of data through error detection and correction mechanisms, and multiplexing/demultiplexing to handle multiple applications running concurrently.
3. What are the protocols commonly used in the transport layer?
Ans. The two most commonly used protocols in the transport layer are Transmission Control Protocol (TCP) and User Datagram Protocol (UDP). TCP provides reliable, connection-oriented communication with error detection and correction, while UDP offers a connectionless, unreliable communication with minimal overhead.
4. How does the transport layer ensure reliable delivery of data?
Ans. The transport layer ensures reliable delivery of data through various mechanisms. TCP, for example, uses sequence numbers and acknowledgments to ensure that all segments are received in the correct order and without any errors. It also incorporates retransmission of lost segments and flow control to prevent overwhelming the receiver.
5. What is the difference between TCP and UDP in the transport layer?
Ans. The main difference between TCP and UDP is the level of reliability and overhead they provide. TCP offers reliable, connection-oriented communication with error detection and correction, ensuring all data is delivered correctly. UDP, on the other hand, provides connectionless, unreliable communication with minimal overhead, making it suitable for applications that prioritize speed over reliability, such as video streaming or real-time gaming.
21 videos|107 docs|66 tests
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