In this section of the course,
we're going to discuss troubleshooting performance issues.
We're going to be taking a deep dive
into the systematic methods of identifying
and resolving common problems and issues
that can hinder your network's performance.
Whether it's disruption caused by collisions
and broadcast storms, the call quality degradation
of a VoIP issue, or the challenges of packet loss,
we're going to equip you with the necessary skills
to tackle these problems head on.
By addressing things like high CPU
and bandwidth utilization, poor connectivity, DNS hiccups,
and a myriad of other potential performance pitfalls,
you're going to learn to maintain
and optimize your network operations.
You're really going to gain the experience here
that you need to ensure your networks run smoothly,
efficiently, and continue to meet the demands
of our modern digital communication needs
by keeping your operating network at its peak performance.
Now, in this section, we're going to be focused again
on Domain 5, network troubleshooting,
and this time on Objective 5.4.
Objective 5.4 states that given a scenario,
you must be able to troubleshoot common performance issues.
First, let's look at collision and broadcast storms.
You're going to need to be able to figure out
how excessive traffic and misconfigured network devices
can cause collisions and broadcast storms
that will lead to network slowdowns and disruptions.
Then, we'll discuss VoIP issues.
We're going to be looking at some challenges
that we have when we're using VoIP services,
including jitter, latency, and bandwidth constraints,
which can all significantly affect
the quality of your services.
Next, we're going to learn about packet loss.
We'll explore the various reasons why packets may get lost
in the network and why they fail to reach their destination,
including things like network congestion,
faulty hardware, and poor connectivity
that can diminish your network's performance.
After that, we're going to explore network performance issues
like high CPU utilization, high bandwidth utilization,
poor physical connectivity,
malfunctioning of your network, or DNS problems.
Then, we're going to cover some other performance issues,
including low optical link budgets, certificate issues,
license feature issues, BYOD challenges,
and hardware failures.
Finally, we'll take a short quiz to see
what you learned during this section of the course
and review your answers to ensure you know
why the right answers were right
and the wrong answers were wrong.
So if you're ready, let's get started
troubleshooting performance issues
in this section of the course.