Part 3 of 3 in the CompTIA Network+ (2012 Objectives) series. This CompTIA Network+ course teaches you the fundamentals of networking. You'll learn how to install, configure and troubleshoot basic networking hardware, protocols and services so you can successfully implement and maintain networks. If you're an aspiring network support professional or just getting started with networking, this course is right for you. This is an entry-level certification, so no previous IT experience is needed, but some familiarity with computer hardware and software will be helpful.
Ed Liberman has worked in technology for over 20 years. He has been certified and instructing IT since 1998. He has helped thousands of people to get started or advance their careers in the IT industry.
Troubleshooting Welcome to TrainSignal. You're watching a lesson Troubleshooting. Now when it comes to troubleshooting the very first thing that I want to tell you is that being a good troubleshooter comes down to really understanding the methodology of troubleshooting. So now in this lesson we will take the time to go through some common troubleshooting issues that you might come across, but the reality is that's just a little bit of spinning our wheels, let me give you an example. I remember many years ago I took a five-day class where three of the days were spent doing nothing but troubleshooting a few different scenarios that we were looking at, and by the end of that class what I can tell you is well, if I ever come across those few scenarios I know what to do, but beyond that it really didn't do much for me, whereas when you understand the process on how to go about troubleshooting something, and then even beyond that process another huge component of this is knowing the technology, understanding the technology in the first place. So really it could be argued that throughout this entire course I've been teaching you how to troubleshoot because that's really what it does come down to is if you understand the technology well enough that you can then go through this methodology and find the breakdown, that's good troubleshooting. So in this lesson we're going to go ahead and start off by focusing on that methodology, we'll go through the troubleshooting process flow, and then I will take you through a few common troubleshooting issues that are a little bit more on the typical side to try to help you out there, so let's go ahead and get started.
Network Access Security Welcome to TrainSignal, you're watching a lesson on Network Access Security. Now when it comes to security there's many different aspects that we have to take a look at in computer networking. So in this lesson we're going to focus on controlling access to your network, so let's go ahead and get started.
User Authentication Welcome to TrainSignal, you're watching a lesson on User Authentication. Now I will tell you in this course there's a number of different lessons we've had that are related to network security, and although the word security doesn't appear in the title of this lesson, I'll tell you, user authentication plays a huge role in keeping things secure on your network, so let's go ahead and get started.
Security Threats Welcome to TrainSignal, you're watching a lesson on Security Threats. Now I've mentioned that there's a number of different areas of security when it comes to computer networking, and this is a pretty important one. This has to do with knowing what the threats are to your environment, because quite frankly if you don't know what the threats are well, then you don't really know how to protect against them. So let's go ahead and get started.
Security Devices Welcome to TrainSignal, you're watching a lesson on Security Devices. Now as I've mentioned before when it comes to computer networking and the security aspects of it, well there's many of them, and in this lesson we're going to focus specifically on certain devices, and when I say devices I don't necessarily mean physically hardware devices, but different devices and mechanisms that we can use to help keep our networks secure. So let's go ahead and get started.
Virtual Networking Welcome to TrainSignal, you're watching a lesson on Virtual Networking. Now in this course, being that it's Network+, we've learned about a whole lot of different networking concepts, and ideas, and tools, and techniques, and you name it, but the one thing we haven't really talked about a whole lot is the idea of something called virtualization. That's a real big buzzword right now in today's industry. So what we're going to do here is we're going to talk about how to take a whole lot of the stuff we've already learned about in networking and see how it relates with virtualization. Let's go ahead and get started.
DHCP Welcome to TrainSignal, you're watching a lesson on DHCP. Now there's a term you probably have heard before, I mean DHCP is talked about all over the place. But what is DHCP? Well the first thing you need to know is what the letters stand for. The letters stand for Dynamic Host Configuration Protocol, and if you think about it, well, that's really what it means, it means that we are going to configure our hosts dynamically. And I guess, because we have to use the last word, it's a protocol. But the bottom line is DHCP gives us the ability to avoid having to go around and manually configure every computer's IP configuration. Now, we'll talk a little bit more about the why this is so important, but first let's learn how the computers actually get those IP addresses.
Certification Welcome to TrainSignal, you're watching a lesson on Certification. Now in this lesson there's two main things that I'm going to do with you. Number one, I'm going to go through all of the Network+ objectives as they're listed by CompTIA. And I'll also show you where you can find those objectives on your own because they do change over time. The second thing I'm going to do with you is I'm going to go through some test preparation strategies and test taking strategies that I've personally used over the years and have had a lot of success with. So let's go ahead and get started.
Next Steps Welcome to TrainSignal, and guess what? You've made it to the last lesson in the Network+ course, congratulations. And in this lesson what I want to do with you is I want to talk about what you might do next. In other words you've gone through and you've listened to me talk to you about different things and show you different things, and you're like okay, I think I got a hold of it, but now what do I do? Where do I go from here? Well the first thing that I recommend, and when I say the first thing I'll tell you what, this is something that I hope you've maybe done a little bit already as you've gone through the course, but if you haven't, what you need to do at this point is you need to set up a network. Now it doesn't have to be a very large network, it can be an extremely small network. As a matter of fact there's a name for a small network, we call it a SOHO network. That stands for small office or home office type network. So as you're learning there's a really good chance you'll just have a home office that you'll set up with some kind of a network.