1
00:00:00,800 --> 00:00:04,490
And finally, we're in the application layer.

2
00:00:05,220 --> 00:00:10,680
Now, if you remember, I mentioned before, for the ease of use, the last three layers session layer,

3
00:00:10,680 --> 00:00:16,930
presentation layer and application layer are thought of together as the application layer.

4
00:00:16,950 --> 00:00:22,590
As you know, these three layers are already a single layer in the TCP IP reference model.

5
00:00:23,660 --> 00:00:29,870
So the application layer contains the communications protocols and interface methods used in process

6
00:00:29,870 --> 00:00:34,580
to process communications across an Internet protocol computer network.

7
00:00:34,970 --> 00:00:41,270
The application layer only standardizes communication and depends upon the underlying transport layer

8
00:00:41,270 --> 00:00:47,330
protocols to establish host to host data transfer channels and manage the data exchange in a client

9
00:00:47,330 --> 00:00:50,000
server or peer to peer networking model.

10
00:00:50,510 --> 00:00:54,620
So let's have a look at some important protocols of the application layer.