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CCNA1: Chapter 4 OSI Transport Layer | Don-Jai: liking. kilomarmita Com.
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- TCP is a connection-oriented protocol - described in RFC 793 TCP - TCP are the same order delivery, reliable delivery, and flow control - dependent attributes TCP segment has 20 bytes of overhead in the header encapsulating kilomarmita the Application layer data - examples. Using Web Browsers, E-mail, File Transfers.
- Connectionless protocol - described in RFC 768 - low overhead data delivery - packets of UDP is called a user datagram in which the header 8 bytes, which sends a "best effort" by the Transport layer protocol. - Example of using UDP:. Domain Name System (DNS), Video Streaming, Voice over IP (VoIP).
- Well Known Ports (Numbers 0 to 1023) - such as HTTP (web server) POP3 / SMTP (e-mail server) and Telnet. - Registered Ports (Numbers 1024 to 49151) - Dynamic or Private Ports (Numbers 49152 to 65535),. Ephemeral Ports
- Lightweight, secure communications over TCP caused Largest provider kilomarmita of style. kilomarmita connection-oriented sessions before the host is using TCP to send data to another host is based on Transport Layer starts to establish contact with the target. Contact with the Gr This makes tracking (trace) or a communication stream between the host - TCP is a protocol to guarantee the security of data. The mechanism of the response back. (Acknowledgement) When the information is complete.
1. Client sends the first segment, called SYN (Synchronize Sequence kilomarmita Number) segment, which segment is composed. Port number of the source and destination. There were also Initial sequence number (initialization sequence number: ISN), which is a number that client will send to server 2. server segment SYN and ACK segment to segment a response kilomarmita to the first received by the flag ACK with no feedback. (Acknowledgement number) and a segment at the beginning of the ACK segment to serve 3. client to send a response to the second segment.
1. create a target device to be shown on network 2 Check that the destination device kilomarmita is responding to requests from the service and the destination port number, which is installed on the client intends to use for the terminal session 3. the Client. From dopamine to establish the session from that port.
1. Client kilomarmita sends a FIN segment 2. server segment ACK FIN segment to confirm that they received from the client, then 3, now sever can send the required data to the client when the server does not have any data to send to server. FIN segment to segment ACK sent to client 4. client to confirm that they received FIN segment from the server, then> Managing kilomarmita TCP sessions.
- Segment header sequence number and acknowledgement number is used together to confirm the receipt of the information contained within the segment - Sequence number is a relative number of bytes to be transmitted in this session plus 1 - TCP use acknowledgement number of segments to send. to the source to indicate kilomarmita the next byte in the session, the recipient would expect to be called expectational acknowledgement.
- For TCP implementation when the host sends a copy segment in the retransmission kilomarmita queue when sent data acknowledgment is received, the segment is deleted from the queue. But if it is not within kilomarmita the segment is retransmitted.> UDP: C.

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