The Open Systems Interconnection (OSI) Model

The Open Systems Interconnection (OSI) Model

This defined a seven-layer model of data communications. Each layer of the OSI Reference Model provides a set of functions to the layer above and, in turn, relies on the functions provided by the layer below. Although messages can only pass vertically through the stack from layer to layer, from a logical point of view, each layer communicates directly with its peer layer on other nodes.

7 layer

 

The seven layers are:

Application

The application layer gives the user access to all the lower OSI functions, and its purpose is to support semantic exchanges between applications existing in open systems. An example is the Web browser.

Presentation

The presentation layer is concerned with the representation of user or system data. This includes necessary conversations (for example, a printer control character), and code translation (for example, ASCII to EBCDIC).

Session

The session layer provides mechanisms for organizing and structuring interaction between applications and/or devices.

 

Transport

The transport layer provides transparent and reliable end-to-end data transfer, relying on lower layer functions for handling the peculiarities of the actual transfer medium. TCP and UDP are examples of a Transport layer protocol.

Network

The network layer provides the means to establish connections between networks. The standard also includes procedures for the operational control of internetwork communications and for the routing of information through multiple networks. The IP is an example of a Network layer protocol.

Data Link

The data link layer provides the functions and protocols to transfer data between network entities and to detect (and possibly correct) errors that may occur in the physical layer.

Physical

The physical layer is responsible for physically transmitting the data over the communication link. It provides the mechanical, electrical, functional and procedural standards to access the physical medium.

Akshay Sharma

AKshay has a rich experience of 10+ years in data and telecom domains. He is working as a solution architect in a reputed Telecom in India from the last 5 yrs and has diversified experience in providing robust network solution to SMB and enterprise segment. His core expertise is in DSL broadband/IP/MPLS/Routing and switching with hands on multiple telecom equipment’s and had done multiple certifications into his long career.

You may also like...

15 Responses

  1. KIMAK KAU says:

    Hi there Dear, are you in fact visiting this site daily,
    if so afterward you will definitely take pleasant experience.

  2. Wonderful post! We will be linking to this particularly great content on our website.
    Keep up the good writing.

  3. Great beat ! I wish to apprentice at the same time as you
    amend your website, how can i subscribe for a blog web site?
    The account aided me a applicable deal. I had been a little bit acquainted of this
    your broadcast provided vibrant clear idea

    Here is my web page Madden NFL Mobile Cheats

  4. Amazing! Its really amazing paragraph, I have got much clear idea regarding from this article.

  5. HuldaQKish says:

    Have you contemplated creating an ebook or guest authoring on other sites?

    I actually have your blog based on the same information you discuss and would really
    like to possess you share some stories/information. I know my visitors would enjoy your projects.
    If you are even remotely interested, feel free to send me an email.

    Here is my web page … HuldaQKish

  6. TrumanLGrant says:

    Greetings from L . a .! I’m bored at your workplace so I chose to
    browse your site in my iphone during lunch break. I enjoy the knowledge you present here and can’t wait to have a look when I get home.

    I’m shocked at how fast your site loaded on my own phone ..
    I’m not really using WIFI, just 3G .. Anyways, excellent blog!

    Also visit my blog: TrumanLGrant

  7. DeanMBucchin says:

    Yesterday, while I was at work, my sister stole my iPad and tested to see if it can survive a twenty five foot drop, just so she can be a youtube sensation. My apple ipad is now broken and she
    has 83 views. I know this is completely off topic
    but I had to share it with someone!

    My blog; DeanMBucchin

  8. casino says:

    casino
    casino games
    casino online
    casino games
    casino games

  9. Pretty portion of content. I simply stumbled upon your site and
    in accession capital to say that I get in fact enjoyed account your weblog
    posts. Any way I will be subscribing in your augment
    or even I fulfillment you get entry to constantly fast.

  10. I’m extremely impressed with your writing skills as
    well as with the layout on your weblog. Is this a paid theme or
    did you customize it yourself? Either way keep up the nice quality writing, it’s rare to see a great blog like this one nowadays.

  11. 강남안마 says:

    Some times its a pain in the ass to read what website owners
    wrote but this internet site is rattling user friendly!

  12. I would like to use the chance of saying thanks to you for your professional instruction I have continually enjoyed visiting your site.

    I will be looking forward to the particular commencement of my
    college research and the entire prep would never have been complete without coming over to your blog.
    If I might be of any help to others, I’d personally be ready to help through
    what I have gained from here.

  13. They then measure and mark the borosilicate glass for the cut.

  14. I am not sure where you’re getting your information, but great topic.
    I needs to spend some time learning more or understanding
    more. Thanks for magnificent info I was looking for this information for my mission.

  1. July 19, 2018

    … [Trackback]

    […] Informations on that Topic: ip-mpls.com/ccna/the-open-systems-interconnection-osi-model/ […]

Leave a Reply

Your email address will not be published. Required fields are marked *

nineteen + 1 =

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>