Ch 9 Networking Protocols and OSI Model OSI

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Ch 9 Networking Protocols and OSI Model

Ch 9 Networking Protocols and OSI Model

OSI Layers Arranged in a Hierarchy Application Layer Presentation Layer Session Layer Transport Layer

OSI Layers Arranged in a Hierarchy Application Layer Presentation Layer Session Layer Transport Layer Network Layer Data Link Layer Physical Layer

Data Exchange Using OSI Layers L 7 data H 6 L 6 data L

Data Exchange Using OSI Layers L 7 data H 6 L 6 data L 5 data H 4 L 4 data H 5 L 6 data H 5 L 4 data H 3 H 2 L 3 data 010101000101001011100000110101 H 3 L 3 data 010101000101001011100000110101 Transmission Medium H 2

Physical Layer Between Adjacent Nodes From Data Link Layer L 3 data Physical Layer

Physical Layer Between Adjacent Nodes From Data Link Layer L 3 data Physical Layer To Data Link Layer H 2 L 3 data Physical Layer 00110010110 Medium H 2 00110010110

Data Link Layer Between Adjacent Nodes From Network Layer To Network Layer L 3

Data Link Layer Between Adjacent Nodes From Network Layer To Network Layer L 3 data Frame H 2 00110010110 To Physical Layer Data Link Layer Frame H 2 00110010110 From Physical Layer Data Link Layer

Network Layer Between Adjacent Nodes From Transport Layer To Transport Layer L 4 data

Network Layer Between Adjacent Nodes From Transport Layer To Transport Layer L 4 data Frame H 3 L 3 data To Data Link Layer Network Layer H 3 Frame L 3 data From Data Link Layer Network Layer

Transport Layer From Session Layer To Session Layer L 5 data H 4 H

Transport Layer From Session Layer To Session Layer L 5 data H 4 H 4 Transport. Layer Transport Layer L 4 data To Network Layer From Network Layer

Session Layer From Presentation Layer L 6 data To Presentation Layer L 6 data

Session Layer From Presentation Layer L 6 data To Presentation Layer L 6 data H 5 Checkpoints H 5 Session Layer Checkpoints L 5 data To Transport Layer From Transport Layer Session Layer

Presentation Layer From Application Layer To Application Layer L 7 data Encoded, encrypted and

Presentation Layer From Application Layer To Application Layer L 7 data Encoded, encrypted and Presentation compressed data Layer Presentation Layer L 7 data H 6 Encoded, encrypted and compressed data H 6 Presentation Layer L 6 data To Session Layer From Session Layer

Application Layer Email … WWW Application Layer L 7 data To Presentation Layer L

Application Layer Email … WWW Application Layer L 7 data To Presentation Layer L 7 data From Presentation Layer

Protocols in the TCP/IP Suite at Different Layers TELNET File Transfer Protocol (FTP) Simple

Protocols in the TCP/IP Suite at Different Layers TELNET File Transfer Protocol (FTP) Simple Mail Transfer Protocol (SMTP) Trivial File Transfer Protocol (TFTP) User Datagram Protocol (UDP) Transmission Control Protocol (TCP) Internet Control Message Protocol (ICMP) Hyper Text Transfer Protocol (HTTP) Internet Protocol (IP) Address Resolution Protocol (ARP) Network Interface Protocols Physical Networks Reverse Address Resolution Protocol (RARP) Application Layer Transport Layer Network Layer Data Link Layer Physical Layer

Mapping of TCP/IP Protocols With the OSI Model Application SMTP FTP DNS HTTP TELNET

Mapping of TCP/IP Protocols With the OSI Model Application SMTP FTP DNS HTTP TELNET Presentation Applications Session Transport Network Data Link Physical UDP TCP ICMP IP ARP RARP Protocols specific to the underlying physical media used for data communication at the hardware level

Message Transfer From the Source to the Destination at Different Layers Source Destination Original

Message Transfer From the Source to the Destination at Different Layers Source Destination Original Message Frame header TCP header Original Message IP header TCP header Original Message

IP

IP

IP

IP

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