Explain open-systems interconnections architecture model, Computer Engineering

Assignment Help:

Q. Explain Open-systems interconnections architecture model

The most common network architecture model is the open-systems interconnections (OSI). Figure shows the ISO (International Standards Organization) seven-layer model for an OSI. Although not all layers need be implemented, the more layers that are used, the more functionality and reliability are built into the system. Starting from the bottom layer, the functions of the layers are as follows.

1. Physical-Defines the type of medium, the transmission method, and the transmission rates available for the network; provides the means for transferring data across the interconnection channel and controlling its use.

2. Data Link-Defines how the network medium is accessed, which protocols are used, the packeting/framing methods, and the virtual circuit/connection services; responsible for the transfer of data across the link; provides for the detection and correction of data- transmission errors.

3. Network-Standardizes the way in which addressing is accomplished between linked networks; performs networking functions and internetworking.

4. Transport-Handles the task of reliable message delivery and flow control between applications on different stations; provides source-to-destination data integrity.

5. Session-Establishes two-way communication between applications running on different stations on the network; provides the user interface into the transport layer.

6. Presentation-Translates data formats so that computers with different "languages" can communicate; provides the syntax (rules) of representation of data between devices.

7. Application-Interfaces directly with the application programs running on the stations; provides services such as file access and transfer, peer-to-peer communication among applications, and resource sharing; provides support to process end users' applications such as electronic mail, database management, and file management.

130_Explain open-systems interconnections architecture model.png


Related Discussions:- Explain open-systems interconnections architecture model

Explain the meaning of bind socket primitive, Explain the meaning of BIND s...

Explain the meaning of BIND socket primitive The bind Primitiv: While created, a socket has neither a remote address nor a local address. A server utilizes the bind proce

Define the term internet, Internet:  The Internet, an umbrella term cov...

Internet:  The Internet, an umbrella term cover countless network and services that comprise a super-network, is a global network of computer networks that was started in the 1

Describe the functionality of software testing, What do you do if you have ...

What do you do if you have given functionality that wasn't listed in the requirements? - If the functionality isn't essential to the purpose of the application, it should be re

Determine the number of lines for writing into memory, Words having 8-bits ...

Words having 8-bits are to be stored into computer memory.  The number of lines required for writing into memory are ? Ans. 8-bit words needed 8 bit data lines.

Duplicating processes, DUPLICATING PROCESSES : As we mentioned earlier dup...

DUPLICATING PROCESSES : As we mentioned earlier duplicating is a process whereby a master copy is prepared from which a large number of other copies are obtained with the help of

What are the address-sequencing capabilities, What are the address-sequenci...

What are the address-sequencing capabilities required in a control memory? i. Incrementing the control address register ii. Unconditional branch as specified by address fiel

Explain in detail about operating system, Explain in detail about Operating...

Explain in detail about Operating Systems (OS) Operating system (OS) is a program which after being initially loaded into computer by a boot program, manages all the other appl

Binary tree can be converted in to its mirror image, A binary tree can be c...

A binary tree can be converted in to its mirror image By traversing it in Preorder

Describe the hardwired control method, Describe the Hardwired control metho...

Describe the Hardwired control method for generating the control signals Hard-wired control can be explained as sequential logic circuit that generates particular sequences of

Set up a standard population model structure, Set up a standard population ...

Set up a standard population model structure. The population will begin with 24 people. We do not have actual data to support a birth rate, but we could calculate a reasona

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