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Chapter Overview of TCP/IP Reference Highly Recommended: TCP/IP White Paper
Benedictine College, US has reference to this Academic Journal, Chapter Overview of TCP/IP Reference Highly Recommended: TCP/IP White Paper by Microsoft Questions How many layers are there in the TCP/IP model? How do they relate so that the ISO-OSI model? What are some of the TCP/IP related protocols? Explain the purpose in addition to function of the above protocols? What are ports? Explain the implication of keeping the ports open. How can the ports be protected from hacker attacks? Where would one use the UDP protocol in place of the TCP protocol?
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Chapter Modules TCP/IP Overview in addition to Layers TCP/IP Related Protocols TCP/IP Ports in addition to Windows API Module Overview of TCP/IP TCP/IP A highly standardized protocol used widely on the Internet Standards area available in the form of RFC documents Request For Comments (RFC) Standards are overseen by the Internet Engineering Task Force (IETF)
Layers of TCP/IP Reference Model There are four layers of the TCP/IP reference model (DARPA model as named by the US Government Agency) The ISO-OSI reference model is composed of seven layers The next slide shows the mapping of the ISO/OSI model so that the TCP/IP model Note that the ISO/OSI model is more widely used in addition to accepted but the TCP/IP model is easy so that comprehend ISO-OSI Seven Layer Model Recalled Source: starter.sdsu /remote/demo/osi-tcp.html Comparison of ISO-OSI Model in addition to the DOD (TCP/IP) Model Source: starter.sdsu /remote/demo/osi-tcp.html
07- Transport Layer Transport services in addition to protocols Transport vs. network layer Transport vs. network layer Transport vs. network layer Internet transport-layer protocols Multiplexing/demultiplexing Connectionless demultiplexing Connectionless demux (cont) Connection-oriented demux Connection-oriented demux (cont) Is every protocol the same? UDP checksum Checksum calculation
Layer Reference so that Protocol Recalled Source: starter.sdsu /remote/demo/osi-tcp.html Source: TCP/IP White Paper by Microsoft TCP/IP Layers Network interface layer Internet layer Host-to-host transport layer Application layer
Layer Properties In the following slides, the following is described in consideration of each layer Layer function Core protocols Relationship so that ISO/OSI model Network Interface Layer Responsible in consideration of sending in addition to receiving TCP/IP packets on the network medium (physical/Data Link) Applicable LAN technologies Ethernet, Token Ring, FDDI etc. Applicable WAN technologies X.25 (old), Frame Relay, ATM etc. Note that some technologies such as ATM in addition to FDDI may be used at both the WAN in addition to the LAN levels Some Core Protocols IEEE 802.3, IEEE 802.5 in addition to IEEE 802.11 series of protocols
Relationship so that OSI Model Data Link Layer Physical Layer Network Interface Layer Internet Layer Packaging Addressing Routing Core Internet Layer Protocols IP A connectionless unreliable protocol that is part of the TCP/IP protocol suite ARP (Address Resolution Protocol) Resolves IP addresses so that MAC addresses ICMP (Internet Control Message Protocol) Diagnostics in addition to error reporting (IGMP) Internet Group Management Protocol Management of group multicast
More on Address Resolution Protocol (ARP) NIC ID AA.BB.CC.DD NIC ID AB.BD.CD.DE 18.104.22.168 22.214.171.124 Resolves, in consideration of example, IP addresses so that the corresponding MAC level hardware address by in consideration of instance broadcasting. IP HAW Relationship so that ISO Model Network Layer Internet Layer Transport Layer Sequencing in addition to transmission of packets Acknowledgment of receipts Recovery of packets Flow control In essence, it engages in host-to-host transportation of data packets in addition to the delivery of them so that the application layer
Core Protocols of the Transport Layer TCP (Transmission Control Protocol) UDP (User Datagram Protocol) Transport Layer TCP Transmission Control Protocol (TCP) One-to-one in addition to connection-oriented reliable protocol Used in the accurate transmission of large amount of data Slower compared so that UDP because of additional error checking being performed UDP User Datagram Protocol (UDP) One-to-one or one-to-many,connectionless in addition to unreliable protocol Used in consideration of the transmission of small amount of data Accuracy is not of prime concern The overhead of establishing a TCP connection is not warranted Used in video in addition to audio casting Multicasting Broadcasting Also used in consideration of multimedia transmission Faster compared so that TCP
Relationship so that ISO Model Transport Layer in addition to some functions of the Session Layer Transport Layer Application Layer Provides applications alongside the ability so that access the services of the other layers New protocols in addition to services are always being developed in this category Some Core Protocols HTTP FTP Telnet SMTP POP3 IMAP SNMP etc.
End of Module Module More on TCP/IP Application Layer Protocols Some Application Related Application Layer Protocols HTTP FTP SMTP Telnet
End of Module End of Module END OF CHAPTER
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