NTP Overview & Configuration - Part 1

NTP stands for Network Time Protocol.  NTP is responsible for synchronizing the clock on computer systems and networks.  NTP has been around since the mid-1980s and was designed by David L. Mills of the University of Delaware.  Intrigued?  Want to know what's under the hood?  🤔

I just dropped a new video on my YouTube channel, and in this video, I provide a high-level overview of NTP and then walk you through step-by-step how it works.  This video is part one of the two-part series.  So stay tuned  🤓

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How DNS Works Step by Step

DNS stands for Domain Name System, and without DNS internet wouldn't exist.  So what exactly is DNS, and how does it work?  🤔

I am glad you asked.  In this video, I will provide a high-level overview of DNS and then walk you through step-by-step how it works  🤓

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CCNA Course for Beginners - Full Course

First, I wish you a fantastic new year filled with mental, physical, spiritual and financial success.  As my gift to you, I launched my CCNA course on YouTube to help you kickstart 2023 in style.  This course is comprised of two videos, over 10 hours each.  It took me over a year to put this course together, so I hope you enjoy it 😊

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DHCP Explained | DORA | DHCP Relay Agent

Have you ever wondered how devices get their IP address? Does it all seem like magic? 🤔

In this video, I intend to demystify this mystery. First, I give you a high-level overview of DHCP (Dynamic Host Configuration Protocol) and explain the DHCP DORA process. Finally, I wrap up with the conceptual understanding of DHCP Relay Agent 🤓

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What is HSRP? | Overview & Configuration

Have you ever wondered what an HSRP is and how it's configured? 🤔

If you have, you have come to the right place. In this video, I will give you a high-level overview of HSRP and then jump right into the CLI configuration. So you can walk away with practical implementation knowledge of HSRP. If you are ready, let's roll 🤓

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IPv4 to IPv6 Transition

Have you been tasked with implementing IPv6, and is that keeping you up at night? 🤔

If yes, you have come to the right place. In this video, I am going to share a couple of IPv4 to IPv6 migration strategies with you, including configuration, in under 3 minutes. If you are ready, let's roll 🤓

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Overview of Wireless LAN Tech

Did you know how Radio Frequency (RF) is linked to Wi-Fi technology? Do you know how wireless LAN tech works? 🤔

I just dropped a new video on my YouTube channel, and in this video, I address these questions in under 10 minutes. I provide a high-level overview of Wi-Fi technology and the basics of how wireless tech works under the hood 🤓

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Static Routing Overview & Configuration

Do you know how static routing works? 🤔

I just dropped a new video on my YouTube channel and in this video, I provide a high-level overview of static routing. I then jump straight into CLI and show you how to configure static routing on a Cisco router or a switch 🤓

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Link State vs Distance Vector Routing Protocols

Do you know the difference between Link State & Distance Vector routing algorithms? 🤔

In this video, I provide a high-level overview of the difference between Link State & Distance Vector routing algorithms. As a bonus, I also cover a Hybrid algorithm. All that in less than 3 minutes. 🤓

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How Routing Table Works

Do you ever wonder how a routing table works? 🤔

If you do, you are not alone. In this video, I cover the following:

  1. I explain at a high level how the routing table works. I walk you through the router's decision-making process.

  2. I then get into Cisco Administrative Distance values.

  3. Next, I compare various Interior Gateway Protocols (IGP) such as RIPv2, EIGRP & OSFP.

  4. Finally, I wrap it up with a quick CLI explanation of the "Show IP Route" command. And the best part, I cover all that in less than 7 minutes.

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Main Difference between Private IP and Public IP Address

Do you find the topic of Private IP vs. Public IP addressing complicated?  🤔

If so, you are not alone.  In this video, I demystify this concept in about  4 minutes.  I provide a high-level overview of Private IP addressing and the key difference between the Private IP and Public IP address space  🤓

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Router on a Stick Overview and Configuration

Did you know that router on a stick is related to Inter-VLAN routing?  🤔

In this video, I explain this concept in less than 9 minutes.  I provide a high-level overview of the router on a stick and then jump right into the CLI configuration  🤓

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What's the difference between Hub and Switch?

Do you know the difference between a hub and a switch? 🤔

I just dropped a new video on my YouTube channel and in this video, I compare a hub vs. a switch vs. a multilayer switch (MLS) at a high level in less than 5 minutes. As a bonus, I also discuss the difference between a collision domain and a broadcast domain 🤓

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What is ARP?

Have you ever wondered how network devices discover each other a given network? 🤔

I just dropped a new video on my YouTube channel, and in this video, I answer this question in roughly 5 minutes. I provide a high-level overview of ARP and do a whiteboard describing the process of device discovery 🤓

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OSI Model Layers | Encap & Decap Explained

Have you ever wondered how data is encapsulated & decapsulated in the OSI (Open Systems Interconnect) model? 🤔

In this video, I answer this question in about 6 minutes. I provide a high-level overview of the OSI model encapsulation & decapsulation process as the data flows from one layer to another. Finally, I explain the benefits of the OSI model 🤓

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Wi-Fi Evolution | 802.11 Standards Explained

Do you know the difference between Wi-Fi 5 & Wi-Fi 6? How about 802.11ac vs. 802.11ax? 🤔

If you find these standards confusing, have no fear. I just dropped a new video on my YouTube channel and in this video, I walk you through the evolution of Wi-Fi technology standards in about 7 minutes. By the time you are done watching this video, you'll have a firm grasp of various Wi-Fi Generations - all the way from Wi-Fi 1 to Wi-Fi 6 🤓

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What is Inter VLAN Routing?

Do you know the difference between an SVI and a router on a stick? 🤔

In this video, I answer this question in less than 5 minutes. I provide a high-level overview of the Inter-VLAN Routing. I then walk you through various real-world design scenarios 🤓

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