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Layer N in the model accepts data from the next higher layer, layer N+1, in the form of a block of data known as a service data unit (SDU). To deliver this SDU to the destination system, a layer N protocol is used between the layer N entity in the source system and the layer N entity in the destination system. The source protocol entity encapsulates the SDU by adding a header and possibly a trailer, containing protocol control information, such as source and destination address and error check codes. The SDU plus header and trailer is known as a protocol data unit (PDU). An SDU may be broken up into multiple chunks and sent out in multiple PDUs, or multiple SDUs may be aggregated and send out in a single PDU, if the protocol allows it.
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Using OSI reference model explain the data communication between two hosts?
Using OSI reference model explain the data communication between two hosts?
Are the TCP IP model and OSI model examples of reference models?
tcp ip and osi are having their reference models, they are not reference models.......they are network models, defines how does a network works when data is sent from one node to another within a network.
What is the difference between data model and schema in database?
As I understand it, a database schema is a physical entity, it describes the structure of exactly how the data is stored and is itself stored by DBMS for reference. Data model, on the other hand, is an abstract representation of database.
What are the seven layers of the OSI reference model?
From lowest to highest physical, data, transport, sessions, presentation, application.
Compare the osi reference model with tcpip reference model discuss the shortcomings of these models?
Q.8 What is the difference b/w OSI Reference Model and TCP/IP Reference Model? The open systems interconnection (OSI) reference model describes how information from a software application in one computer moves through a network medium to a software application in another computer. The OSI reference model is a conceptual model composed of seven layers, each specifying particular network functions. As in the OSI model, data is passed down the stack when it is being sent to the network and up the stack when it is being received from the network. The four-layered structure of TCP/IP is seen in the way data is handled as it passes down the protocol stack from the application layer to the underlying physical network.
Does dsl operate at layer 3 of the osi model?
It uses data modulation techniques at teh physical layer (layer 1).
What is the middle layer of the OSI reference model?
Middle layer of osi model is Transport layer functions: 1.Segmentation of data 2.connection managment 3.flow control of data 4.Error checking
Third layer of osi reference model?
The network layer. # Physical # Data Link # Network # Transport # Session # Presentation # Application
What layer in the OSI Reference Model is used for bridge operations?
A network bridge connects multiple network segments at the data link layer (Layer 2) of the OSI model.
Techniques used to summarize organize and present data that have been collected are called?
Data Gathering and Representation Techniques
What does HLMT stand for?
If you meant HTML - it stands for Hyper-Text Mark-up LanguageIs it HTML or HLMT? Anyways, HLMT means High Level Modeling Tool. It is a software engineering is the process of creating a data model by applying formal data model descriptions using data modeling techniques.
What is the role of the data link layer protocols in data transmission?
The role is to transfer frames to packets
