Vault sync: 2021-10-20 22:47:05

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