1 00:00:00,000 --> 00:00:01,230 In this section of the course, 2 00:00:01,230 --> 00:00:04,050 we're going to discuss troubleshooting performance issues. 3 00:00:04,050 --> 00:00:05,250 We're going to be taking a deep dive 4 00:00:05,250 --> 00:00:07,110 into the systematic methods of identifying 5 00:00:07,110 --> 00:00:08,970 and resolving common problems and issues 6 00:00:08,970 --> 00:00:11,070 that can hinder your network's performance. 7 00:00:11,070 --> 00:00:12,750 Whether it's disruption caused by collisions 8 00:00:12,750 --> 00:00:15,360 and broadcast storms, the call quality degradation 9 00:00:15,360 --> 00:00:18,120 of a VoIP issue, or the challenges of packet loss, 10 00:00:18,120 --> 00:00:19,890 we're going to equip you with the necessary skills 11 00:00:19,890 --> 00:00:21,960 to tackle these problems head on. 12 00:00:21,960 --> 00:00:23,610 By addressing things like high CPU 13 00:00:23,610 --> 00:00:26,760 and bandwidth utilization, poor connectivity, DNS hiccups, 14 00:00:26,760 --> 00:00:29,490 and a myriad of other potential performance pitfalls, 15 00:00:29,490 --> 00:00:30,540 you're going to learn to maintain 16 00:00:30,540 --> 00:00:32,610 and optimize your network operations. 17 00:00:32,610 --> 00:00:34,350 You're really going to gain the experience here 18 00:00:34,350 --> 00:00:36,300 that you need to ensure your networks run smoothly, 19 00:00:36,300 --> 00:00:38,430 efficiently, and continue to meet the demands 20 00:00:38,430 --> 00:00:40,350 of our modern digital communication needs 21 00:00:40,350 --> 00:00:43,410 by keeping your operating network at its peak performance. 22 00:00:43,410 --> 00:00:45,450 Now, in this section, we're going to be focused again 23 00:00:45,450 --> 00:00:47,430 on Domain 5, network troubleshooting, 24 00:00:47,430 --> 00:00:50,010 and this time on Objective 5.4. 25 00:00:50,010 --> 00:00:52,620 Objective 5.4 states that given a scenario, 26 00:00:52,620 --> 00:00:55,680 you must be able to troubleshoot common performance issues. 27 00:00:55,680 --> 00:00:58,620 First, let's look at collision and broadcast storms. 28 00:00:58,620 --> 00:00:59,820 You're going to need to be able to figure out 29 00:00:59,820 --> 00:01:02,250 how excessive traffic and misconfigured network devices 30 00:01:02,250 --> 00:01:04,110 can cause collisions and broadcast storms 31 00:01:04,110 --> 00:01:06,750 that will lead to network slowdowns and disruptions. 32 00:01:06,750 --> 00:01:08,940 Then, we'll discuss VoIP issues. 33 00:01:08,940 --> 00:01:10,140 We're going to be looking at some challenges 34 00:01:10,140 --> 00:01:12,030 that we have when we're using VoIP services, 35 00:01:12,030 --> 00:01:14,550 including jitter, latency, and bandwidth constraints, 36 00:01:14,550 --> 00:01:15,930 which can all significantly affect 37 00:01:15,930 --> 00:01:18,000 the quality of your services. 38 00:01:18,000 --> 00:01:20,190 Next, we're going to learn about packet loss. 39 00:01:20,190 --> 00:01:22,560 We'll explore the various reasons why packets may get lost 40 00:01:22,560 --> 00:01:25,050 in the network and why they fail to reach their destination, 41 00:01:25,050 --> 00:01:26,760 including things like network congestion, 42 00:01:26,760 --> 00:01:28,890 faulty hardware, and poor connectivity 43 00:01:28,890 --> 00:01:31,080 that can diminish your network's performance. 44 00:01:31,080 --> 00:01:33,660 After that, we're going to explore network performance issues 45 00:01:33,660 --> 00:01:37,140 like high CPU utilization, high bandwidth utilization, 46 00:01:37,140 --> 00:01:38,580 poor physical connectivity, 47 00:01:38,580 --> 00:01:41,460 malfunctioning of your network, or DNS problems. 48 00:01:41,460 --> 00:01:43,950 Then, we're going to cover some other performance issues, 49 00:01:43,950 --> 00:01:47,010 including low optical link budgets, certificate issues, 50 00:01:47,010 --> 00:01:49,410 license feature issues, BYOD challenges, 51 00:01:49,410 --> 00:01:50,820 and hardware failures. 52 00:01:50,820 --> 00:01:52,470 Finally, we'll take a short quiz to see 53 00:01:52,470 --> 00:01:54,150 what you learned during this section of the course 54 00:01:54,150 --> 00:01:55,770 and review your answers to ensure you know 55 00:01:55,770 --> 00:01:56,970 why the right answers were right 56 00:01:56,970 --> 00:01:58,530 and the wrong answers were wrong. 57 00:01:58,530 --> 00:02:00,420 So if you're ready, let's get started 58 00:02:00,420 --> 00:02:01,590 troubleshooting performance issues 59 00:02:01,590 --> 00:02:03,090 in this section of the course.