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15 Cards in this Set
- Front
- Back
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Components of a Socket |
⚫IP Address ⚫Transport Protocol ⚫Port Number |
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RFC 793 |
🐼 |
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Elaborate Port Numbers |
⚫Enables multiplexing. ⚫ Servers/Destinations use well-known port numbers assigned to applications. These numbers are below 1024. ⚫Clients/Sources use anything above 1024 as long as it is unused. |
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HTTP Return Codes |
⚫200 - OK. ⚫404 - error. |
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HTTP |
⚫RFC 7230 ⚫Transfer of files between web servers and clients. |
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Transport Layers Features not provided by UDP |
⚫Error recovery. ⚫Flow control. ⚫Connection establishment and termination. ⚫Ordered data transfer and segmentation. |
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Windowing |
⚫Mechanism for flow control. ⚫The receiving host tells the sender how much data it can receive. ⚫Either sliding or dynamic window. |
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Error Recovery |
⚫Data bytes are numbered with Sequence and Acknowledgement fields. ⚫The client can acknowledge what data are received correctly and request for retransmission for those which are not. |
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Forward Acknowledgement |
Acknowledgement by listing the next byte/s instead of the byte/s that are last received |
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Connection Establishment |
⚫Three-way handshake. ⚫Initialization of Sequence and Acknowledgement fields and agreeing on port numbers. |
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Connection Termination |
This is a four-way process because the device on the right needs a confirmation from the application before sending ACK, FIN. If not, the first two segments will be sent repeatedly. |
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Connection-oriented and Connectionless Protocols |
🐼 |
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Popular Applications and their Port Numbers |
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TCP/IP Model |
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HTTPS Port |
443 |
