Explain briefly the function of layers, covered connectivity, Computer Engineering

Assignment Help:

Explain briefly the function of different layers which are covered under end to end layer connectivity.

Different layer are as follows:

1. Transport Layer:

 This is responsible for establishing a network independent communication path appropriate for the particular terminal elements (for example: providing the suitable data rate and end-to-end error control). Therefore, it relieves the user from being related with such details.

Within a packet switched network, the transport entity breaks-up a long user message in packets to march the network abilities. These packets are reassembled at the receiving end to reconstruct the user message.

Also End-to-end flow control and end-to-end error recovery are the functions of transport layer.

2. Session Layer:

 The session layer is used to permit users to classify themselves when waiting access to the network.

 It is related with setting up and maintaining an operational session among terminals. For example: "signing on" at the commencement of a task and "signing off" at its end.

 The chief function of the session layer is to organize several sessions among cooperating entities and perform all concerned functions as synchronization, failure control and management for the successful execution of a session.

 The other facility given by the session layer is termed as Activity management.

3. Presentation Layer:

It is related with the format of the data represented, so as to overcome difference in representation of the information as supplied to one terminal and needed at other. Their reasons are to make communication over the network machine independent.

This resolves the syntax differences with encoding data into standard abstract notation which is valid in the network. Therefore file format differences, data structure and data representations are resolved by using a standard notation.

4. Application Layer:

 As the highest layer within the OSI reference model, the application layer gives services to the users of OSI environment. The layer gives services as follows:

a. Electronic mail or message handling service

b. Directory services

c. Cost allocation

d. Determination of quality of service

e. File transfer and management

f.  Editors and terminal support services

g. Telematic services like videotext.


Related Discussions:- Explain briefly the function of layers, covered connectivity

Tcp connection , a) What command do you use to file all active and availabl...

a) What command do you use to file all active and available sockets? These should also contain UNIX domain sockets, which are primarily used for local connections.   b) What sta

What is the meaining of action implementing instruction, Action implementin...

Action implementing instruction's meaning are a actually carried out by ? Ans. By instruction execution, the meaning of action implementing instruction is actually carried out.

Transfer of control, Question a) Name and explian the four essential ...

Question a) Name and explian the four essential elements of a machine instruction. b) Provide any four common examples of mnemonics. c) The level of disagreement conce

Define logical data as operand data type, Q. Define Logical data as operand...

Q. Define Logical data as operand data type? Every word or byte is treated like a single unit of data. Whenever an n-bit data unit is considered as comprising n 1-bit items of

Multithreaded architecture, Q. Multithreaded Architecture? It is clear ...

Q. Multithreaded Architecture? It is clear at the moment if we provide a lot of contexts to multiple threads then processors with numerous contexts are known as multithreaded s

.rapid technology, Choose one area of rapid technological change in IT or C...

Choose one area of rapid technological change in IT or Computer Science and research and report on recent developments and the outlook for the future in the area that you have chos

State in brief about the proxy server, State in brief about the proxy serve...

State in brief about the proxy server A proxy server also helps a lot since it hides the real IP addresses of users requesting resources outside the firewall. Finally, the

Describe about directory in doc, Q. Describe about directory in DOC? We...

Q. Describe about directory in DOC? We all know that, the volume of the hard disk is generally quite large (10 MB to a few GB). You can keep hundreds or even thousands of files

Write short note on code optimization, Write short note on code optimizatio...

Write short note on code optimization. Code optimization: It is the optional phase designed to enhance the intermediate code therefore the Ultimate object program runs quicke

Display methods, Describe a console application project to show the differe...

Describe a console application project to show the different formatting styles used in display methods(i.e.Console.writeLine()).

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd