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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.
What is structure and unstructure?
Structured data is organized data that is contained within a data model. Unstructured data, on the other hand, lacks a predefined data model or structure and includes data like text, images, and videos. Structured data is easier to analyze and manipulate, while unstructured data requires more advanced techniques for interpretation and processing.
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
How does a model describe known data and predict future data?
A model describes known data by identifying patterns, relationships, and trends within the data using statistical or machine learning techniques. By learning from these patterns, the model can make predictions about future data by extrapolating from the established relationships. This involves using the model's parameters, derived from the training data, to generate outputs for new, unseen inputs. Ultimately, the model aims to minimize prediction errors and improve accuracy over time.
Does dsl operate at layer 3 of the osi model?
It uses data modulation techniques at teh physical layer (layer 1).
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.
What is the role of the data link layer protocols in data transmission?
The role is to transfer frames to packets
