# Q6A · Transmission media

Subject: Computer Networks

Exam: TEE

Reader: https://deep-learning-study-room.vercel.app/cn/#tee/mocks/tee-mock-a/q6a

Canonical: https://deep-learning-study-room.vercel.app/read/cn/tee/mocks/tee-mock-a--q6a/

TEE · 100 attempted marks · solutions for every choice · current syllabus 702AI0C023

### TEE practice mock · Q6A. List different types of unguided transmission media and write any two characteristics of each. [5 mock marks]

#### Answer

| Type | Characteristic 1 | Characteristic 2 |
| --- | --- | --- |
| Radio | Can provide broad-area/mobility support depending on band | Shared spectrum/interference and obstacles affect reception |
| Terrestrial microwave | Directional, usually line of sight | Needs antenna alignment; obstructions/weather can matter |
| Satellite microwave | Relay covers large or remote areas | Delay/capacity depend strongly on orbit/system |
| Infrared | Short range and generally blocked by opaque walls | Limited room-scale coverage reduces inter-room interference |

Many classifications group satellite links under microwave rather than making a separate spectral category. State that grouping consistently.

#### Practical example

Wi-Fi uses radio; a building-to-building directional backhaul can use terrestrial microwave; an infrared remote cannot normally control a device through a solid wall.