From d19488dfa40779a3be53e238466b9f6222e9a9c6 Mon Sep 17 00:00:00 2001 From: Nick Leeman Date: Wed, 20 Oct 2021 22:47:05 +0200 Subject: [PATCH] Vault sync: 2021-10-20 22:47:05 --- School/Analyse/OSI Model.md | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/School/Analyse/OSI Model.md b/School/Analyse/OSI Model.md index 01d05c6..62e09d9 100644 --- a/School/Analyse/OSI Model.md +++ b/School/Analyse/OSI Model.md @@ -12,6 +12,20 @@ As you can see the model has 7 layers. Each layer has their own responsibility. **Note: We don't actually "use" the OSI model, we mostly use the [[TCP/IP Model]] now. The implementation is exactly the same, only some layers are different.** ## 7. Application Layer +The application Layer provides services to the end user. So this is the layer the user actually interacts with. + +These services are usually protocols that interact with the data that the user uses. + +**Examples of services (protocols):** +- HTTP +- FTP +- IRC +- SSH +- DNS +- SMTP + +For example a web browser like Google Chrome uses the HTTP protocol to browse files on the internet. And the mail client Outlook uses the SMTP protocol to send mail via the internet. + ## 6. Presentation Layer ## 5. Session Layer ## 4. Transport Layer