Skip to main content

Computer Networking- CCNA part 13 of Segment 1- Presentation Layer of OSI Model

Presentation Layer 

Hello friends , i am vasu birla and today will talk about 6th layer of OSI model. Note this these layers are not software or hardware, it is just for understanding and logical theory of understanding of working of network.

We can understand this layer by it's name Presentation  means to present something.

When any system sends data to another system so it may be that second system would not present the same data as given by sender system. Presentation layer make data viewable according to recieving system.  
For more easy understanding lets look some functions of this layer-



Translation -  There are different kind of platforms in the network (windows, linux, mac etc) these systems are different so way of presentation of  data is also different. for this problem presentation layer Translate the data from original form to viewable form of recieving system.

for example if you open any website on Windows OS  like www.vasubirla.blogspot.com  so you will show some pages  when you open this website on Linux  or MAC os  so same view or same color pages will be shown to you , It is only because of presentation layer. 

Encryption -  It means simple plan data converted in to coding form. at this layer SSH protocol (Secure Socket Layer)  is used for encryption so that no hacker or unwanted activity read our data.

Compression - It means reduce the size of data , it is important function through which data is sent in small size for resulting good speed and utilizing time.

 


Labels

Labels:

Comments

Post a Comment

Popular posts from this blog

GitHub Repo Collaboration Work on single project

 =============================================== To collaborate effectively with your friend on the same project, you should use Git branches to manage different lines of development. Here's a step-by-step procedure you can follow to streamline collaboration: 1. Create Separate Branches for Each Developer Create a New Branch for Your Friend: On your local repository, create a new branch for your friend. For example if your friend name is kilvish , if you want to create a branch named kilvish , you would run: make sure you would be on main branch already   command->  git checkout -b kilvish git push origin kilvish 2. Set Up Your Friend’s Environment( On your Friend's System )  at kilvish side  run ->  Clone the Repository (if not already done): If your friend hasn’t cloned the repository yet, they should do so: command ->  git clone https://github.com/Vasu-Birla/your-repo.git   // your your main clone line  Fetch All Bran...
Post a Comment
Read more

Part 15- What is Repeater (Networking Devices)- Computer Networking- CCNA

Repeater  hello friends i am Vasu Birla and today i am starting new segment of CCNA computer networking  its a Networking Devices. we will discuss every important Devices used in networks. Repeater is a first networking devices. What is Repeater  Repeater is a device that receives signals and re-transmits by amplifying or regenerating signals. Repeater has two port one is for receive signals from previous network and second port is for retransmit signals to the next extended network. Two Port Repeater Repeater is a device which is used to Regenerate or replicate signal (Pichhe se aa rahe signal ko regenerate karke ya amplify karke aage strong signals bhej sakte he) Analog and digital both type of signals can be retransmitted by repeater. Here there is difference between regeneration and amplifying.  Amplification means , received signals will be amplified as it is , whether there are impurities in signals  and Regeneration means repeate...
Post a Comment
Read more

How to deploy NodeJS app on server with Apache2 and acess it with Server IP addresss - Node JS deploy project Live.

     hello friens , This is Vasu Birla , in previous post we have seen the deployement of NodeJS app on AWS instance server instance but AWS server is expensive than other servers . SO today we will use simple Ubuntu server for making Live out Project using Apache2 . At the end you will be abe to access your NodeJS app using server IP address from anywhere  .. 1.  Login to your server using SSH terminal . (in AWS part i already explained how to do this )     -> Open your putty in hostname put your server IP -      login with ssh username ->root and password     (if you dont have root username and pass ask your      provider or reset it from cpanel or hosting panel ) 2. after login - on terminal you can Put your project anywhere.     There are two ways to put your project folder on server location     (i) - > using Github - (very popular and easy to track your everyday code changes t...
Post a Comment
Read more