How to understand OSI model in Nepali.

By On

 

https://www.youtube.com/watch?v=ImxCi2ec9qM


OSI Model:




1) Application layer: 

key word is : interaction between human using application like: browser, any application like chat software, zoom, teams etc


2) Presentation layer: 

key word - translates the date in correct format  : Like: video file:mp4, avi | audio       file: mp3, wav | image file : jpeg, png, gif etc | document file : doc,.xls, txt etc


3) Session layer: 

create and maintain the session - time | key word: = timeframe the bank website will close automatically in 5 mins. | facebook will close within 30 mins automatically. | For security we need sessions.


4) Transport layer: 

source to destination delivery of data | key word: delivery of data | TCP and UDP

         TCP : Transmission control protocol : Get Confirmation (reliable)| 3 way handshake | Phone call/ browsing the internet page. (TCP)

         UDP : User Datagram Protocol : No Confirmation (Not reliable) live radio transmission | audio, video (real  time application)


5)Network Layer: 

It is responsible to add source and destination IP address | key word : Add IP address |


6) DataLink layer: 

It is responsible to add source and destination MAC | Key word : add destination MAC address             (Router - MAC address change)


7) Physical Layer: 

wire | Key words: Cables, connectors, signals 


(All people seem to need data processing layer)

Comments

Post a Comment

Popular posts from this blog

If a client legal team requested all email and share point files from the past 6 months to present some specific project, can you tell me what kind of tools that you use to deliver that request?

By On
  If a client legal team requested all email and share point files from the past 6 months to present some specific project, can you tell me what kind of tools that you use to deliver that request? If a client legal team requests all email and share point files from the past 6 months to present some specific project, can you tell me what kind of tools that you use to deliver that request? To fulfill a client's legal request for all emails and SharePoint files related to a specific project for the past 6 months, several tools and techniques can be employed. The choice of tools will depend on the organization's existing infrastructure, IT policies, and the scope of the request. Here are some common tools and approaches: eDiscovery Tools: Many organizations use enterprise-level eDiscovery tools, such as Microsoft Purview eDiscovery (previously Office 365 Advanced eDiscovery), Veritas eDiscovery Platform, Nuix, or Relativity, to search, collect, and export email and SharePoint data ...
Read more

Change the bulk password in organization

By On
Image
Change the bulk password in organization Bulk password changes in an organization are typically done in specific situations where there is a need to enhance security, streamline access management, or address potential vulnerabilities. Here are some common scenarios in which bulk password changes may be necessary: Security breach or compromise Routine security practices Employee onboarding or offboarding Password policy updates System migration or integration Suspicious activity detection Compliance requirements Watch below video:
Read more

How to reduce the size of your .OST file?

By On
Image
  How to reduce the size of your .OST file? An OST file, short for Offline Storage Table, is a data file used by Microsoft Outlook to enable users to work offline and synchronize changes with the Exchange server when a connection is reestablished. OST files store copies of mailbox items such as emails, contacts, calendar entries, tasks, and notes, allowing users to access and manage their Outlook data even without an internet connection. When Outlook is connected to an Exchange server, changes made in the OST file are synchronized with the server to ensure consistency across devices and environments. If OST file size is too big and want to reduce the .OST file size you should follow below steps: In Outlook, Click on File > Account Settings > Account setting > Data Files Click on 1 Data Files tab > 2 select the .ost file like above yellow color   Click on 3 Settings options Click on 4 Advance tab Click on 5 “ Outlook Data File setting s” button Click on 6 Compac...
Read more