Question:
Choose the correct set for wireless transmission in physical layer
Choose the correct set for wireless transmission in physical layer
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Wireless Media:
Radio Waves, Microwaves, Infrared, Laser
Wired Media:
Twisted Pair, Coaxial Cable, Optical Fibre
Updated On: Jun 25, 2026
- Radio waves, Infrared, Microwave, Light
- Twisted pair, Coaxial cable, Magnetic media, Fibre optics
- Coaxial cable, RFID, Sensors, IoT
- Modem, Access point, Hub, Switch
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The Correct Option is A
Solution and Explanation
Concept:
Transmission media are classified into:
• Guided Media (Wired)
• Unguided Media (Wireless) Wireless transmission uses electromagnetic waves.
Step 1: Identify wireless media.
Examples include:
• Radio Waves
• Microwaves
• Infrared Waves
• Light Waves (Laser Communication)
Step 2: Analyze remaining options.
Twisted pair, coaxial cable and fiber optics are wired media. Modem, hub and access point are networking devices.
Step 3: Select the answer.
Thus the correct set is \[ \boxed{\text{Radio Waves, Infrared, Microwave, Light}} \]
• Guided Media (Wired)
• Unguided Media (Wireless) Wireless transmission uses electromagnetic waves.
Step 1: Identify wireless media.
Examples include:
• Radio Waves
• Microwaves
• Infrared Waves
• Light Waves (Laser Communication)
Step 2: Analyze remaining options.
Twisted pair, coaxial cable and fiber optics are wired media. Modem, hub and access point are networking devices.
Step 3: Select the answer.
Thus the correct set is \[ \boxed{\text{Radio Waves, Infrared, Microwave, Light}} \]
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