WEBVTT

0:00:07.720000 --> 0:00:13.440000
 Hello and welcome to this video I've
 titled Introducing IPB4, UDP and

0:00:13.440000 --> 0:00:18.500000
 TCP. My name is Keith Bogart and I will
 be your instructor for this video.

0:00:18.500000 --> 0:00:21.060000
 You can see here my
 contact information.

0:00:21.060000 --> 0:00:24.820000
 So should you have any questions or
 doubts as you go along this video

0:00:24.820000 --> 0:00:28.400000
 or after you're done with this course,
 please feel free to reach out to

0:00:28.400000 --> 0:00:32.520000
 me and I will do my best to answer
 your questions as I can.

0:00:32.520000 --> 0:00:36.820000
 So let's talk a little bit about the
 prerequisites for this course.

0:00:36.820000 --> 0:00:39.540000
 There really are very very
 few prerequisites.

0:00:39.540000 --> 0:00:44.100000
 This course is really geared towards
 the very entry level network admin

0:00:44.100000 --> 0:00:47.980000
 or maybe you're not even a network
 admin, you're thinking of going to

0:00:47.980000 --> 0:00:52.560000
 that job role and you know next to
 nothing about computer network.

0:00:52.560000 --> 0:00:56.480000
 So really just the bare bones minimum
 is what you need to know to understand

0:00:56.480000 --> 0:00:58.240000
 the concepts in this course.

0:00:58.240000 --> 0:01:01.800000
 I need you to understand
 the concepts of binary.

0:01:01.800000 --> 0:01:04.900000
 Now you don't have to be a binary expert
 but when we get into the topic

0:01:04.900000 --> 0:01:09.140000
 of IP addresses I am going to be displaying
 those addresses in binary

0:01:09.140000 --> 0:01:14.000000
 format as well as dot a decimal and if
 you don't know what binary is that

0:01:14.000000 --> 0:01:15.400000
 won't make a lot of sense to you.

0:01:15.400000 --> 0:01:19.260000
 So right here if you're not familiar
 with binary I would recommend pausing

0:01:19.260000 --> 0:01:23.680000
 this video and just taking 30 minutes
 or so just to refresh yourself on

0:01:23.680000 --> 0:01:25.700000
 the binary counting system.

0:01:25.700000 --> 0:01:29.800000
 I also want you to understand just
 the basic concepts of encapsulation

0:01:29.800000 --> 0:01:32.860000
 and decapsulation of data.

0:01:32.860000 --> 0:01:38.820000
 IP, TCP and UDP at a real high level
 they all do the same thing.

0:01:38.820000 --> 0:01:42.100000
 They take the data you're putting on the
 network and they add some information

0:01:42.100000 --> 0:01:45.360000
 into the front of that data
 which is called a header.

0:01:45.360000 --> 0:01:49.620000
 We call that encapsulating and then when
 the data reaches its destination

0:01:49.620000 --> 0:01:54.260000
 the destination removes that header
 so it can get to the data behind it.

0:01:54.260000 --> 0:01:56.560000
 That's called decapsulation.

0:01:56.560000 --> 0:01:59.100000
 As long as you know that
 you're good to go.

0:01:59.100000 --> 0:02:02.680000
 Also just the basic concepts of computer
 networks you should be able to

0:02:02.680000 --> 0:02:07.460000
 visualize information going down a
 wire from one point to the other.

0:02:07.460000 --> 0:02:11.080000
 You don't have to know anything about
 routing and switching or data center

0:02:11.080000 --> 0:02:14.540000
 or anything like that in order to
 understand the concepts here.

0:02:14.540000 --> 0:02:17.640000
 So what are the objectives
 of this course?

0:02:17.640000 --> 0:02:19.460000
 Well let's talk about them.

0:02:19.460000 --> 0:02:21.720000
 So we're going to cover.

0:02:21.720000 --> 0:02:26.440000
 I'm going to help you understand the purpose
 and use of the internet protocol.

0:02:26.440000 --> 0:02:30.240000
 I'm going to help you understand what
 the fields are in the IPv4 header

0:02:30.240000 --> 0:02:33.140000
 so you know what each field
 is and what its purpose is.

0:02:33.140000 --> 0:02:34.760000
 Why is it there?

0:02:34.760000 --> 0:02:38.480000
 You're going to understand how IPv4 addresses
 are structured, why we need

0:02:38.480000 --> 0:02:40.640000
 them and how do we build them.

0:02:40.640000 --> 0:02:43.600000
 You're also going to be able to summarize
 the differences between UDP

0:02:43.600000 --> 0:02:48.980000
 and TCP. You're going to be able to
 explain how TCP and UDP port numbers

0:02:48.980000 --> 0:02:54.680000
 are created and used in a session of data
 between a source and destination.

0:02:54.680000 --> 0:02:58.760000
 And you're going to gain basic familiarity
 with how TCP implements a connection

0:02:58.760000 --> 0:03:01.300000
 oriented session.

0:03:01.300000 --> 0:03:06.320000
 So that's it. I hope you look forward
 to this course and let's jump into

0:03:06.320000 --> 0:03:07.260000
 the very next video.