Guided Vs Unguided Transmission Media | Differences & Comparison | Types of Transmission Media

Summary

This video explores the differences between guided and unguided transmission media, essential for data transmission. Guided media, like twisted pair, coaxial cable, and optical fiber, provide a physical path for signals but have limitations in length and cost. Unguided media, including radio waves, microwaves, and infrared, transmit signals wirelessly, overcoming geographical barriers but with less security and speed. The video offers a detailed comparison and encourages viewers to visit techdifferences.com for more information.

Takeaways

• 🌐 The video discusses two types of transmission media: guided and unguided.
• 🔌 Guided transmission media, also known as wire or bounded media, provides a physical path for signals to travel from source to destination.
• 🔗 Guided media has limitations such as conductor length and installation costs, and may require repeaters for long distances.
• 👂 Guided media can be categorized into twisted pair cable, coaxial cable, and optical fiber, each with different characteristics like bandwidth and noise resistance.
• 🌟 Twisted pair cable has low bandwidth and less protection from interference.
• 📡 Coaxial cable offers higher frequency signal transmission and protection against noise.
• 💡 Optical fiber transmits signals in the form of light, providing high bandwidth, noise resistance, and less signal attenuation, but is more expensive and fragile.
• 🌳 Unguided transmission media, also known as wireless or unbounded media, does not require a physical medium and uses air for signal transmission.
• 📶 Unguided media includes radio waves, microwaves, and infrared waves, each with different frequencies and capabilities.
• 🏞️ Unguided media is useful in geographically challenging areas like mountains and oceans where guided media cannot be easily deployed.
• 🚀 The differences between guided and unguided media include the use of physical conductors, directionality of signals, speed of data transmission, security, and impact on human health.

Q & A

What are the two main types of transmission media discussed in the video?

The two main types of transmission media discussed in the video are guided transmission media and unguided transmission media.

What is another term for guided transmission media?

Guided transmission media is also referred to as wire transmission media or bounded transmission media.

What are the limitations of guided transmission media?

The limitations of guided transmission media include the length of the conductor, installation cost, and maintenance issues.

How is twisted pair cable described in the video?

Twisted pair cable is described as having two insulated copper wires twisted around each other, with low bandwidth and less protection from interference.

What is the structure of a coaxial cable?

A coaxial cable consists of an insulated copper wire encased with a metallic blade acting as a second conductor, which is further encased with an insulating material.

What are the characteristics of optical fiber?

Optical fiber is made of glass or plastic, transmits signals in the form of light, is noise-resistant, has less signal attenuation, and has a higher bandwidth.

Why is unguided transmission media necessary?

Unguided transmission media is necessary because it provides a way of communication in geographical areas that cannot be covered by guided transmission media due to conditions like mountains, rivers, and oceans.

How do radio waves, microwaves, and infrared waves differ in the context of unguided transmission media?

Radio waves are low frequency and can travel long distances, microwaves require line of sight transmission and depend on the height of the antenna, and infrared waves have higher frequency and cannot easily penetrate obstacles.

What are the differences between guided and unguided transmission media in terms of signal direction?

Guided transmission media provides a direction to the signal, whereas unguided transmission media does not provide any direction to the signals.

How does the speed of data transmission compare between guided and unguided media?

Data transmission is faster in guided media compared to unguided media, which is comparatively slower.

What are the implications for human health regarding guided and unguided transmission media?

Guided media is less harmful for human health, while unguided media is more harmful.