Computer networks allow devices to interconnect, either locally or around the world, sharing resources and data in milliseconds.

On this three-week course, you’ll examine foundational concepts of computer networks, learning key terminology and processes. Equipped with this knowledge, you’ll be able to begin your journey to passing the CCNA exam.

Explore network protocols and frameworks

Beginning with defining computer networks and their applications, you’ll be guided through key concepts including Transmission Control Protocol/Internet Protocol (TCP/IP) and Open Systems Interconnection (OSI) models.

By understanding these communications protocols and frameworks, you’ll be able to explain how different hosts communicate with each other.

Examine the role of routers, IP addresses, and LAN and WAN connectivity

Learning how routers manage data traffic and connect devices to internet connections, you’ll then expand your knowledge of Local Area Networks and Wide Area Networks within this context. You’ll also explore their relation to Internet Protocol (IP) addresses, taking a detailed look at the differences between private and public IP addresses.

With this knowledge, you’ll be able to understand network scalability and compare processes involved in individual networks and those used on a global scale.

Identify and define network layers in computer networking

Building on your knowledge from earlier in the course, you’ll explore network layers in more detail, including physical, data link, network, transport, and application layers, and understand their functions within a network.

By the end of this course, you’ll be able to define key network characteristics and explain the role of computer networks and devices in sharing resources, transferring data, and connecting people.