WEBVTT 1 00:00:00.540 --> 00:00:02.040 In this section of the course, 2 00:00:02.040 --> 00:00:03.600 we're going to cover the different types 3 00:00:03.600 --> 00:00:06.090 of internet connections that you're going to come across 4 00:00:06.090 --> 00:00:08.040 as a technician in the field. 5 00:00:08.040 --> 00:00:09.780 Now in technical circles though, 6 00:00:09.780 --> 00:00:13.980 we normally refer to these as WAN connections, W-A-N, 7 00:00:13.980 --> 00:00:16.110 instead of calling them internet connections 8 00:00:16.110 --> 00:00:18.270 because they connect our home and offices 9 00:00:18.270 --> 00:00:21.240 to the wide area network known as the WAN 10 00:00:21.240 --> 00:00:23.490 and the internet is just one type of WAN 11 00:00:23.490 --> 00:00:25.080 that we can connect to. 12 00:00:25.080 --> 00:00:26.820 Now to get an internet connection, 13 00:00:26.820 --> 00:00:29.580 you're normally going to enter a contract or service agreement 14 00:00:29.580 --> 00:00:33.330 with an internet service provider, which is called an ISP. 15 00:00:33.330 --> 00:00:35.760 Now these companies establish high-speed links 16 00:00:35.760 --> 00:00:38.580 between their networks and your home or office 17 00:00:38.580 --> 00:00:40.950 and the greater internet at large. 18 00:00:40.950 --> 00:00:42.900 When you purchase an internet connection, 19 00:00:42.900 --> 00:00:44.970 you're going to be tied to a particular technology 20 00:00:44.970 --> 00:00:47.970 or type of service depending on who you buy it from. 21 00:00:47.970 --> 00:00:50.220 For example, at my home office, 22 00:00:50.220 --> 00:00:53.040 I have AT&T as my internet service provider, 23 00:00:53.040 --> 00:00:55.230 and they provide me with a fiber optic connection 24 00:00:55.230 --> 00:00:56.940 all the way to my home office 25 00:00:56.940 --> 00:00:59.250 and terminate it using an ONT, 26 00:00:59.250 --> 00:01:01.290 which is an optical network terminal, 27 00:01:01.290 --> 00:01:02.940 which converts the optical signal 28 00:01:02.940 --> 00:01:04.680 from their fiber optic connection 29 00:01:04.680 --> 00:01:08.010 to an electrical one that can be routed onto my home network 30 00:01:08.010 --> 00:01:11.490 using a copper twisted pair of cable like a CAT6 cable 31 00:01:11.490 --> 00:01:14.460 at speeds of up to one gigabit per second. 32 00:01:14.460 --> 00:01:16.680 Now, conversely, at my offices, 33 00:01:16.680 --> 00:01:18.900 fiber connections aren't available there yet, 34 00:01:18.900 --> 00:01:21.690 so we had to rely on our local cable company 35 00:01:21.690 --> 00:01:23.880 to act as our internet service provider. 36 00:01:23.880 --> 00:01:25.590 This company uses what's called 37 00:01:25.590 --> 00:01:27.960 a hybrid fiber coaxial solution 38 00:01:27.960 --> 00:01:30.900 where they use fiber to the general area of our offices, 39 00:01:30.900 --> 00:01:32.280 but then run a coaxial cable 40 00:01:32.280 --> 00:01:35.340 from their terminal inside to our offices. 41 00:01:35.340 --> 00:01:37.770 Now, when the internet connection enters our office, 42 00:01:37.770 --> 00:01:39.540 it looks just like a coaxial cable 43 00:01:39.540 --> 00:01:41.310 like you plug your TV into, 44 00:01:41.310 --> 00:01:43.560 but then it connects to a cable modem 45 00:01:43.560 --> 00:01:46.230 and that converts it from this radio frequency signal 46 00:01:46.230 --> 00:01:48.360 that's being sent over the coaxial cable 47 00:01:48.360 --> 00:01:50.400 into an electrical signal that can be sent 48 00:01:50.400 --> 00:01:53.580 over a copper twisted pair of cable like CAT6 49 00:01:53.580 --> 00:01:55.680 into my office's networking devices 50 00:01:55.680 --> 00:01:58.800 like our router, our firewall, and our gateways. 51 00:01:58.800 --> 00:02:00.630 Now, in general, when you connect 52 00:02:00.630 --> 00:02:02.370 your internet service provider's connection 53 00:02:02.370 --> 00:02:04.320 to some kind of device in your offices, 54 00:02:04.320 --> 00:02:06.450 whether that's an optical network terminal, 55 00:02:06.450 --> 00:02:08.010 if you're using something like fiber 56 00:02:08.010 --> 00:02:09.990 or a cable or DSL modem, 57 00:02:09.990 --> 00:02:12.030 if you're using one of those connection types, 58 00:02:12.030 --> 00:02:14.280 we call that device the gateway 59 00:02:14.280 --> 00:02:16.290 and that's the gateway between your network 60 00:02:16.290 --> 00:02:19.650 and your ISP or internet service provider's network. 61 00:02:19.650 --> 00:02:22.260 Then you connect your ISP's gateway 62 00:02:22.260 --> 00:02:25.020 to your own router, firewall, or gateway 63 00:02:25.020 --> 00:02:27.360 and this device will act as the go between 64 00:02:27.360 --> 00:02:29.790 for your network clients and the larger internet 65 00:02:29.790 --> 00:02:32.850 that you want to access through the ISP connection. 66 00:02:32.850 --> 00:02:36.030 So in this section of the course, we're going to be talking 67 00:02:36.030 --> 00:02:38.790 all about the different internet connectivity options 68 00:02:38.790 --> 00:02:41.640 that you may come across when working in a small office 69 00:02:41.640 --> 00:02:43.440 or home office network. 70 00:02:43.440 --> 00:02:45.390 Our focus in this section of the course 71 00:02:45.390 --> 00:02:47.970 is going to be on Domain 2 networking, 72 00:02:47.970 --> 00:02:51.060 and we're going to be covering Objective 2.7. 73 00:02:51.060 --> 00:02:53.070 Now, Objective 2.7 states 74 00:02:53.070 --> 00:02:55.020 that you must be able to compare and contrast 75 00:02:55.020 --> 00:02:57.360 internet connection types, network types, 76 00:02:57.360 --> 00:02:58.470 and their features. 77 00:02:58.470 --> 00:03:00.870 And we're going to cover the rest of this objective fully 78 00:03:00.870 --> 00:03:02.700 in this section of the course. 79 00:03:02.700 --> 00:03:04.440 Now, as we begin this section, 80 00:03:04.440 --> 00:03:05.550 we're going to first take a look 81 00:03:05.550 --> 00:03:08.760 at the oldest type of wide area network connection out there 82 00:03:08.760 --> 00:03:10.860 which is known as dial-up internet. 83 00:03:10.860 --> 00:03:14.010 Now, almost nobody uses dial-up internet anymore, 84 00:03:14.010 --> 00:03:17.010 but we're still going to cover it for the sake of thoroughness. 85 00:03:17.010 --> 00:03:19.770 Then we're going to talk about digital subscriber lines, 86 00:03:19.770 --> 00:03:23.010 known as DSL, which was a replacement for dial-up 87 00:03:23.010 --> 00:03:24.420 and still relies on the same 88 00:03:24.420 --> 00:03:26.400 telephone-based networks to operate, 89 00:03:26.400 --> 00:03:29.850 but are decreasing in popularity a lot these days. 90 00:03:29.850 --> 00:03:33.030 Next, we'll move into cable modems and cable connections. 91 00:03:33.030 --> 00:03:34.710 And we already talked a little bit about this 92 00:03:34.710 --> 00:03:36.750 when I started talking about my office here 93 00:03:36.750 --> 00:03:39.540 where we have a hybrid fiber coaxial network. 94 00:03:39.540 --> 00:03:41.940 Then we're going to move into fiber connections, 95 00:03:41.940 --> 00:03:44.700 including fiber to the curb, fiber to the premises, 96 00:03:44.700 --> 00:03:46.380 and fiber to the home. 97 00:03:46.380 --> 00:03:48.240 After that, we'll move into our coverage 98 00:03:48.240 --> 00:03:51.390 of cellular connections and their associate technologies. 99 00:03:51.390 --> 00:03:52.800 Next, we're going to discuss 100 00:03:52.800 --> 00:03:54.630 wireless internet service providers 101 00:03:54.630 --> 00:03:57.240 and their microwave and satellite connections. 102 00:03:57.240 --> 00:03:59.850 Finally, we'll move into a short demonstration 103 00:03:59.850 --> 00:04:01.980 where you're going to see what a wide area network connection 104 00:04:01.980 --> 00:04:03.570 looks like when it's terminated 105 00:04:03.570 --> 00:04:05.790 at your home or office network. 106 00:04:05.790 --> 00:04:07.620 So let's go ahead and get started 107 00:04:07.620 --> 00:04:09.390 with our coverage of internet connections 108 00:04:09.390 --> 00:04:10.890 in this section of the course.