7. Page 7
Introduction to TCP/IPIntroduction to TCP/IP
TCP and IP were developed by a Department of Defense (DOD)TCP and IP were developed by a Department of Defense (DOD)
research project to connect a number different networksresearch project to connect a number different networks
designed by different vendors into a network of networks (thedesigned by different vendors into a network of networks (the
"Internet"). It was initially successful because it delivered a few"Internet"). It was initially successful because it delivered a few
basic services that everyone needs (file transfer, electronic mail,basic services that everyone needs (file transfer, electronic mail,
remote logon) across a very large number of client and serverremote logon) across a very large number of client and server
systems.systems.
As with all other communications protocol, TCP/IP is composedAs with all other communications protocol, TCP/IP is composed
of layers:of layers:
IPIP - is responsible for moving packet of data from node to node. IP- is responsible for moving packet of data from node to node. IP
forwards each packet based on a four byte destination address (theforwards each packet based on a four byte destination address (the
IP number). The Internet authorities assign ranges of numbers toIP number). The Internet authorities assign ranges of numbers to
different organizations. The organizations assign groups of theirdifferent organizations. The organizations assign groups of their
numbers to departments. IP operates on gateway machines thatnumbers to departments. IP operates on gateway machines that
move data from department to organization to region and thenmove data from department to organization to region and then
around the world.around the world.
TCPTCP - is responsible for verifying the correct delivery of data from- is responsible for verifying the correct delivery of data from
client to server. Data can be lost in the intermediate network. TCPclient to server. Data can be lost in the intermediate network. TCP
adds support to detect errors or lost data and to triggeradds support to detect errors or lost data and to trigger
retransmission until the data is correctly and completely received.retransmission until the data is correctly and completely received.內容太多、字太小
內容太多、字太小
8. Page 8
Keywords ???Keywords ???
TCP and IP were developed by aTCP and IP were developed by a Department of Defense (DOD)Department of Defense (DOD)
research project to connect a numberresearch project to connect a number different networksdifferent networks designed bydesigned by
different vendorsdifferent vendors into a network of networks (the "into a network of networks (the "InternetInternet"). It was"). It was
initially successful because it delivered a few basicinitially successful because it delivered a few basic servicesservices thatthat
everyone needs (everyone needs (file transferfile transfer,, electronic mailelectronic mail,, remote logonremote logon) across a) across a
very large number ofvery large number of client and serverclient and server systems.systems.
As with all other communications protocol, TCP/IP is composed ofAs with all other communications protocol, TCP/IP is composed of
layerslayers::
IPIP - is responsible for moving packet of data from node to node. IP- is responsible for moving packet of data from node to node. IP
forwards each packet based on a four byte destinationforwards each packet based on a four byte destination addressaddress (the(the
IP number). The Internet authorities assign ranges of numbers toIP number). The Internet authorities assign ranges of numbers to
different organizations. The organizations assign groups of theirdifferent organizations. The organizations assign groups of their
numbers to departments. IP operates onnumbers to departments. IP operates on gatewaygateway machines thatmachines that
move data from department to organization to region and thenmove data from department to organization to region and then
around the world.around the world.
TCPTCP - is responsible for verifying the correct delivery of data from- is responsible for verifying the correct delivery of data from
client to server. Data can be lost in the intermediate network. TCPclient to server. Data can be lost in the intermediate network. TCP
adds support toadds support to detect errors or lost datadetect errors or lost data and to triggerand to trigger
retransmissionretransmission until the data is correctly and completely received.until the data is correctly and completely received.
9. Page 9
Protocols in Transport/Network LayersProtocols in Transport/Network Layers
TCPTCP
UDPUDP
IPIP
內容太少內容太少
10. Page 10
Introduction to TCP/IPIntroduction to TCP/IP
Developed byDeveloped by Department of Defense (DoD)Department of Defense (DoD) in 1970’in 1970’
ConnectConnect different networksdifferent networks byby different vendorsdifferent vendors
UseUse a client - server Modela client - server Model
Basic ServicesBasic Services
file transfer, electronics mail, remote login, …file transfer, electronics mail, remote login, …
Core ProtocolsCore Protocols
Transmission Control Protocol (TCP)Transmission Control Protocol (TCP) : connection-oriented,: connection-oriented,
reliablereliable
User Datagram Protocol (UDP)User Datagram Protocol (UDP) : connectionless, unreliable: connectionless, unreliable
Internet Protocol (IP)Internet Protocol (IP) : routing, fragmentation, and reassembly: routing, fragmentation, and reassembly
15. Page 15
總 結總 結
簡報技巧顯示個人的組織與表達能力簡報技巧顯示個人的組織與表達能力 !!
不要浪費你自己和大家的時間不要浪費你自己和大家的時間 !!
ii am not here to waste your timeam not here to waste your time
andand
i can only hope you're not here to waste mine.i can only hope you're not here to waste mine.
so I'm gonna keep this short.so I'm gonna keep this short.
