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Layer 4 : Application Layer
Application layer defines TCP/IP application protocols and how host programs interface with transport layer services to use the network.
Protocols: HTTP,TELNET,FTP,SMTP,SNMP,TFTP,DNS etc.
Layer 3: Transport Layer
The purpose of Transport layer is to permit devices on the source and destination hosts to carry on a conversation. Transport layer defines the level of service and status of the connection used when transporting data.
Protocols: TCP and UDP
Layer 2: internet Layer
Internet layer pack data into data packets known as IP datagrams, which contain source and destination address (logical address or IP address) information that is used to forward the datagrams between hosts and across networks. The Internet layer is also responsible for routing of IP datagrams.
Protocols: IP,ICMP,ARP,RARP,IGMP etc.
Layer 1: Network Access Layer
Network Access layer defines details of how data is physically sent through the network, including how bits are electrically or optically signaled by hardware devices that interface directly with a network medium, such as coaxial cable, optical fiber, or twisted pair copper wire.
Protocols: Ethernet,Token Ring, FDDI, X.25, Frame Relay etc.
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Which one is the best model between osi and tcpip and why?
TCP/IP because the osi model has seven layer but in tcp/ip only four layers and most important is that the tcp/ip model is reduce the function of osi model.
When transferring a file using FTP what is the order of protocols from the upper layers of the TCP IP model to the lowest layers?
FTP uses TCP, which uses IP
What are various layers in TCP IP?
There are exactly four layers Application layer Trasport layer Internet layer similar to n/ w layer in OSI model N/w interface like data link layer. TCP/IP model doesnt have physical layer , presentation layer and session layers.
Which two layers of the OSI model describe the same functions as the transport and internet layers of the TCP IP model?
Transport layer and Network layer.
What is the difference between osi and tcp model?
1.The OSI model originally distinguishes between service,interval and protocols. 1.The TCP/IP model doesnt clearly distinguish between service,interval and protocol. 2.The OSI model is a reference model. 2.The TCP/IP model is an implementation of the OSI model. 3.In OSI model,the protocols came after the model was described. 3.In TCP/TP model,the protocols came first,and the model was really just a description of the existing protocols. 4.In OSI model,the protocols are better hidden. 4.In TCP/IP model ,the protocols are not hidden. 5.The OSI model has 7 layers. The TCP/IP model has only 4 layers. 6.The OSI model supports both connectionless and connection-oriented communication in the network layer,but only connection -oriented communication in transport layer. 6.The TCP/IP model supports both connectionless and connection-oriented communication in the transport layer.,giving users the choice. For more information visit the Related Link.
Which tcp-ip layer maps to the physical and data link layers of the osi model?
The Network Interface layer
Compare the osi model and tcp-ip model and their associative protocols?
The OSI model encompasses all of the TCP/IP sub-protocols plus several other protocols that are not part of TCP/IP. These would include IPX/SPX, NetBEUI, Appletalk, and other proprietary protocols that are not part of the TCP/IP model.
What are the layers present in TCP OR IP model?
there are 3 layers present in tcp/ip layer are:- 1. tu kamina hai.2.tu school mein kya Jo ab puch raha hai.3.teri girlfrnd se puch woh bata degi.
Why tcp ip was adopted instead of osi model?
•The layers perform the same duties as in OSI, however, OSI's top three levels are combined into the single Application layer in TCP/IP.•It carries out all of the same functionality as those three layers in OSI.—In simple terms is a language that enables communication between computers—A set of rules (protocol) that defines how two computers address each other and send data to each other—Is a suite of protocols named after the two most important protocols TCP and IP; but includes other protocols such as UDP, RTP, etc.—The OSI model is a model comprises of 7 layers.—The TCP/IP model only has 4.—In reality the TCP/IP model was developed around about the same time as the OSI model which is why it is inspired by it but does not completely conform to the specifications of the OSI model.—The TCP/IP model is a description framework for computer network protocols created in the 1970s by DARPA, an agency of the United States Department of Defense.
How many layer of tcp ip?
The TCP/IP model was adopted and condensed into 4 Layers.1. Link layer ( Layer 1and 2 of the OSI model)2. Internet Layer (Layer 3 of the OSI model)3. Transport ( Layer 4, 5 and 6 of the OSI model)4. Application ( Layer 7 of the OSI model)http://en.wikipedia.org/wiki/TCP/IP_model#Link_Layer
What is the sub protocol that enables tcp ip to internetwork?
Both TCP and IP are subprotocols in the OSI model. IP is used for routing purposes, whereas TCP is used for transport control. If you are asking primarily about internetworking then it would be the IP protocol.
What is a layer four header?
In the commonly used TCP/IP communications, that would either be a TCP header, or a UDP header.In the commonly used TCP/IP communications, that would either be a TCP header, or a UDP header.In the commonly used TCP/IP communications, that would either be a TCP header, or a UDP header.In the commonly used TCP/IP communications, that would either be a TCP header, or a UDP header.
