Every antenna has three key properties: gain, direction, and polarization. The three properties are closely related to each other. Gain measures how much the antenna focuses the signal power in a specific direction.

No single antenna works for every situation. Antennas come in different shapes and sizes, each designed for a specific use case and with a unique gain value. This lesson explains antenna features and characteristics in more detail.

In this lesson, we will learn about modulation, a technique used to send data over radio waves by changing a signal’s amplitude, frequency, or phase.

The last lesson became larger than expected, so we continued exploring the fundamental RF terms in this lesson.

This lesson explains the most common effects that RF signals experience in the real world. They are significant factors in signal loss and wireless range limitations.

We begin our journey into wireless technologies by walking through the basics of RF (radio frequency) signals. This lesson discusses the most common terms and concepts that you will encounter a lot when studying wireless technologies.

In this lesson, we are going to discuss two very widely adopted protocols called File Transfer Protocol (FTP) and Trivial File Transfer Protocol (TFTP). Both serve the same function-transfer files-but each uses a different network approach, as you will see later on.

In this lesson, we are going to discuss the Simple Network Management Protocol (SNMP). It is one of the most widely implemented network protocol out there and is a must know for any network engineer - especially if you are studying for an exam such as the CCNA or CCNP.