Introduction to Computer Networking

In this introductory lesson, technology expert Todd McLeod introduces the concept of computer networking and shares examples of common computer networks.

In this lesson, technology expert Todd McLeod briefly introduces the needs that drove the creation of the Internet, as well as the technology it used.

Technology expert Todd McLeod gives a basic breakdown of how cellular networks, satellite and VoIP phones, and similar technologies function.

In this lesson, technology guru Todd McLeod introduces the basic function of GPS, the science behind it, and the different applications it has in daily life.

Technology expert Todd McLeod introduces the different ways networks are already in use, as well as how they may continue to develop in the future.

Technology expert Todd McLeod discusses how videoconferencing has transformed meetings and strengthened the ability to stay in contact with people.

Technology expert Todd McLeod discusses the benefits of telecommuting, the varying impressions of it, as well as the influence it has had on the workplace.

In this lesson, Todd McLeod introduces crowdsourcing, crowdfunding, and distributed computing. He then shares some creative ways they are being used.

Technology expert Todd McLeod introduces the emerging field of telemedicine and demonstrates the important concepts and possibilities associated with it.

In this lesson, technology expert Todd McLeod discusses the four most common types of area networks (PAN, LAN, WAN, and MAN) and compares their size and reach.

In this lesson, technology expert Todd McLeod explains the difference between intranets, extranets, and VPNs, and shows how these networks are used.

In this lesson, technology expert Todd McLeod gives a brief overview of the different kinds of cables used to connect computers to and within a network.

In this lesson, Todd McLeod discusses the science of wireless connections and the radio waves that make them possible, as well as radiation concerns.

In this lesson, discover exactly what a network topology is and how each router, computer, and connection in the network is affected by these arrangements.

Technology expert Todd McLeod discusses the two most common network models that serve as part of a network's architecture and shares how those setups function.

Technology expert Todd McLeod gives a rundown of the various network protocols and their functions. Then he discusses the concept of IP addresses.

Learn about the concept of bandwidth, discover its relationship to your computer's Internet connection, and understand the usefulness of bandwidth speed tests.

Learn how modems are indispensable pieces of technology, and see how they pass digitized information up and down the connections we have to the Internet.

In this lesson, technology guru Todd McLeod discusses parallel and serial communication and shares how data is transmitted over a network connection.

In this lesson, technology expert Todd McLeod explains the difference between circuit switching and packet switching and how that change enabled the Internet.

Technology expert Todd McLeod discusses hubs, switches, and routers, then offers a brief explanation of the differences between each of them.

In this lesson, learn not only how firewalls can protect your computer or network, but also how they can be used to restrict general access to online content.

In this DIY electronics lesson, technology expert Todd McLeod demonstrates step-by-step how to properly make and crimp your own ethernet cable.