tailieunhanh - Network+Certification_Microsoft Press note (8)

Chapter 8, TCP/IP Fundamentals.|1|Chapter AddressingChapter 8, Lesson Protocols.|2| .|3| in the for use on the ARPANET, progenitor of the by UNIX since the inception of the UNIX operating predates the PC, the Open Systems Interconnection (OSI).model, and EthernetDesigned to be platform and operating system with a collaborative development as Requests for Comments (RFCs) by the Task Force (IETF).3In the public domainTCP/IP Layers|4|AB.|5| has its own system of layers that predates the OSI modelAdvantages of a multilayered design, versus a single protocols make it easier to support a variety of or modifying protocols to support new physical or networking application programming interfaces (APIs).does not require modification of the entire protocol stack2Quality of multiple protocols operating at the same layer makes for applications to select the protocol that provides only of service required3Simultaneous the stack is split into layers, the development of the can proceed simultaneously, using personnel who qualified in the operations of the particular layersThe four TCP/IP to the data-link layer in the OSI data-link layer protocols used on local area networks (LANs).(such as Ethernet and Token Ring) are not part of the TCP/IP and PPP are TCP/IP link layer protocols, used on wide (WANs)dARP functions partially at the link to the network layer in the OSI IP, ICMP, and Internet Group Membership Protocol.(IGMP), plus some dynamic routing to the transport layer in the OSI TCP and to the session, presentation, and application layers in many protocols, such as Hypertext Transfer Protocol.(HTTP) and File Transfer Protocol (FTP)|6|Instructor Note Use Slide 6 to compare the four layers of the TCP/IP model to the of the OSI model.|7| and |8|.|9|2Link layer protocols used for WAN in basic function to data-link layer protocols such and Token Ring, but not designed for use on is the acronym for Address Resolution Protocol2Defined in RFC 826, “Ethernet Address Resolution Protocol”.3Can be considered a link layer protocol or an internet layer a service to IP, which indicates the link messages are carried directly inside data-link layer frames ( IP datagrams), which indicates the internet layerARP the network layer and above, the TCP/IP protocols use IP identify computers2To transmit IP data to a computer on the LAN, IP must supply computer’s hardware (or Media Access Control [MAC]).address to the link (or data-link) layer protocol3IP generates and broadcasts ARP messages to resolve IP addresses addressesThe ARP address resolution packages transport layer information into a datagram by inserting address of the destination system into the Destination IP Address the IP header2IP compares the network identifier in the destination IP address to network identifier and determines whether to send the to the destination host or to a router on the local networkOutline, Chapter Certification, Second .|10||11| gener

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