WEBVTT 1 00:00:00.150 --> 00:00:01.590 In this section of the course, 2 00:00:01.590 --> 00:00:04.830 we're going to cover concepts surrounding virtualization. 3 00:00:04.830 --> 00:00:06.870 Now, virtualization is a great tool 4 00:00:06.870 --> 00:00:09.210 that can allow you to run multiple operating systems 5 00:00:09.210 --> 00:00:12.630 and application environments on a single piece of hardware, 6 00:00:12.630 --> 00:00:15.180 such as a workstation or a desktop. 7 00:00:15.180 --> 00:00:18.300 Virtualization is also at the heart of cloud computing. 8 00:00:18.300 --> 00:00:20.880 So it is definitely something you want to understand better 9 00:00:20.880 --> 00:00:24.420 before continuing to study in cloud computing in the future. 10 00:00:24.420 --> 00:00:26.010 Virtualization is the creation 11 00:00:26.010 --> 00:00:28.080 of a virtual version of a computer 12 00:00:28.080 --> 00:00:30.270 by simulating the hardware functionality 13 00:00:30.270 --> 00:00:33.840 of a traditional computer within a virtualized environment. 14 00:00:33.840 --> 00:00:35.820 Now for example, on my computer, 15 00:00:35.820 --> 00:00:38.940 I'm running OSX as my main operating system 16 00:00:38.940 --> 00:00:40.740 because I run a Mac. 17 00:00:40.740 --> 00:00:42.390 Now I can create a virtual machine 18 00:00:42.390 --> 00:00:45.060 that has been given some of my processing capability, 19 00:00:45.060 --> 00:00:46.470 some of my system memory, 20 00:00:46.470 --> 00:00:48.000 and some of my storage space, 21 00:00:48.000 --> 00:00:49.920 so that I can also install an operating system 22 00:00:49.920 --> 00:00:51.720 on this new virtual computer 23 00:00:51.720 --> 00:00:53.730 that I created on my Mac. 24 00:00:53.730 --> 00:00:55.920 So on my Mac, for example, 25 00:00:55.920 --> 00:00:58.200 I have a virtual machine running Linux 26 00:00:58.200 --> 00:01:00.480 and I have another one running Windows 10 27 00:01:00.480 --> 00:01:02.880 and both of them are not real computers. 28 00:01:02.880 --> 00:01:03.960 They're just software 29 00:01:03.960 --> 00:01:06.060 running in this virtualized environment 30 00:01:06.060 --> 00:01:07.770 that's tricking the operating systems 31 00:01:07.770 --> 00:01:09.180 into thinking they have access 32 00:01:09.180 --> 00:01:11.940 to a real computer the entire time. 33 00:01:11.940 --> 00:01:14.190 Now if this is a bit confusing right now, 34 00:01:14.190 --> 00:01:15.090 don't worry. 35 00:01:15.090 --> 00:01:16.920 By the end of this section of the course, 36 00:01:16.920 --> 00:01:18.750 you're going to understand virtual machines, 37 00:01:18.750 --> 00:01:21.180 how they work, and how to use them. 38 00:01:21.180 --> 00:01:23.040 Our focus in this section of the course 39 00:01:23.040 --> 00:01:24.810 is going to be on domain four, 40 00:01:24.810 --> 00:01:27.330 virtualization and cloud computing. 41 00:01:27.330 --> 00:01:29.460 We're going to spend our time in this section though, 42 00:01:29.460 --> 00:01:31.770 focusing just on virtualization 43 00:01:31.770 --> 00:01:33.480 and we're going to save the cloud computing part 44 00:01:33.480 --> 00:01:36.330 of that domain for the next section of the course. 45 00:01:36.330 --> 00:01:38.190 Now as we go through this section, 46 00:01:38.190 --> 00:01:40.590 we're going to cover objective 4.2. 47 00:01:40.590 --> 00:01:43.590 This state that you must be able to summarize aspects 48 00:01:43.590 --> 00:01:45.780 of client-side virtualization. 49 00:01:45.780 --> 00:01:49.020 Now notice the keyword in this objective is summarize 50 00:01:49.020 --> 00:01:50.610 and this is the first objective, 51 00:01:50.610 --> 00:01:52.290 that you've seen inside of this course, 52 00:01:52.290 --> 00:01:54.780 that uses the word summarize in it. 53 00:01:54.780 --> 00:01:57.420 For objectives with a keyword summarize in them, 54 00:01:57.420 --> 00:01:59.460 you are going to be asked to understand the meaning 55 00:01:59.460 --> 00:02:01.620 of the information learned in this course. 56 00:02:01.620 --> 00:02:03.420 Consolidate that information, 57 00:02:03.420 --> 00:02:05.160 and then answer questions directly 58 00:02:05.160 --> 00:02:06.870 based on what you learned. 59 00:02:06.870 --> 00:02:08.580 This is a little bit more in-depth 60 00:02:08.580 --> 00:02:10.410 than an explain level question 61 00:02:10.410 --> 00:02:11.970 and you may still have some questions 62 00:02:11.970 --> 00:02:13.920 that require you to recall some kind of fact 63 00:02:13.920 --> 00:02:16.560 or figure that you learned in these videos. 64 00:02:16.560 --> 00:02:18.630 For example, let's say you're going to learn 65 00:02:18.630 --> 00:02:20.640 in this section about virtualization 66 00:02:20.640 --> 00:02:22.740 about this thing called hypervisors. 67 00:02:22.740 --> 00:02:25.320 And now, there's two types of hypervisors out there. 68 00:02:25.320 --> 00:02:28.230 The exam could describe a hypervisor's capabilities 69 00:02:28.230 --> 00:02:29.760 and then ask you to determine 70 00:02:29.760 --> 00:02:33.090 is this a Type 1 or a Type 2 hypervisor. 71 00:02:33.090 --> 00:02:35.580 That is the type of consolidation of knowledge 72 00:02:35.580 --> 00:02:37.770 that you're learning about from hypervisors 73 00:02:37.770 --> 00:02:39.990 and then applying that to answering the question, 74 00:02:39.990 --> 00:02:43.200 based on your summarizing all the different knowledge 75 00:02:43.200 --> 00:02:45.240 into either one or two sentences 76 00:02:45.240 --> 00:02:47.250 that could summarize the level of knowledge 77 00:02:47.250 --> 00:02:49.290 for a question on the exam. 78 00:02:49.290 --> 00:02:50.700 Now, I just wanted to point this out 79 00:02:50.700 --> 00:02:52.200 as we got into this section 80 00:02:52.200 --> 00:02:54.300 because you're going to get a handful of questions 81 00:02:54.300 --> 00:02:57.090 on the exam that have to do with virtualization, 82 00:02:57.090 --> 00:03:00.030 and they're going to come all from this section of the course 83 00:03:00.030 --> 00:03:02.580 at this summarized level of knowledge. 84 00:03:02.580 --> 00:03:04.440 So as we begin this section, 85 00:03:04.440 --> 00:03:07.200 we're going to first take a look at virtualization. 86 00:03:07.200 --> 00:03:10.020 The two types of hypervisors used in virtualization, 87 00:03:10.020 --> 00:03:13.080 and how virtualization works in a traditional system. 88 00:03:13.080 --> 00:03:15.810 Next, we're going to move into containerization 89 00:03:15.810 --> 00:03:17.850 which is a newer form of virtualization 90 00:03:17.850 --> 00:03:18.900 where all the containers 91 00:03:18.900 --> 00:03:21.090 use the same underlying operating system 92 00:03:21.090 --> 00:03:22.830 and library files. 93 00:03:22.830 --> 00:03:23.880 Then, we're going to move 94 00:03:23.880 --> 00:03:25.860 into the different purposes of virtual machines 95 00:03:25.860 --> 00:03:28.110 that you are going to use as a technician. 96 00:03:28.110 --> 00:03:29.550 After that, we're going to move 97 00:03:29.550 --> 00:03:31.020 into different resource requirements 98 00:03:31.020 --> 00:03:33.990 that you need to create and operate these virtual machines. 99 00:03:33.990 --> 00:03:36.810 This includes the CPU features for virtualization, 100 00:03:36.810 --> 00:03:40.080 system memory, storage, and networking requirements. 101 00:03:40.080 --> 00:03:41.220 Then, we're going to move 102 00:03:41.220 --> 00:03:42.810 into the different security requirements 103 00:03:42.810 --> 00:03:45.900 to protect your virtual machines within your system. 104 00:03:45.900 --> 00:03:48.030 Next, we're going to move into a demonstration 105 00:03:48.030 --> 00:03:49.800 where I'm going to show you how you can install 106 00:03:49.800 --> 00:03:52.830 and configure virtual machines on your own system. 107 00:03:52.830 --> 00:03:55.740 And finally, I'm going to go into another demonstration 108 00:03:55.740 --> 00:03:57.810 where you're going to learn how to secure your virtual machines 109 00:03:57.810 --> 00:04:01.140 on your system from malware and other vulnerabilities. 110 00:04:01.140 --> 00:04:04.530 So, let's get started with our journey into virtualization 111 00:04:04.530 --> 00:04:06.033 in this section of the course.