➤ Hello In this page provides you Unguided Transmission Media Question/MCQ In this question Based on the Radio Wave, Micro Wave, Infrared Wave, Satellites & Mobile Communication.
What is Unguided Media
➤ Unguided transmission media is one which does not use the physical medium to transmit the information from one computer to another computer.
✡ There are three types of transmission media
- Radio Transmission
- Microwave Transmission
- Infrared Transmission
Q.1 Microwaves have frequencies between?
1 GHz and 300 GHz
1 GHz and 30 GHz
1 MHz and 300 MHz
None
Explanation
Microwaves are electromagnetic waves with frequencies ranging from 1 GHz to 300 GHz.
Q.2 Electromagnetic waves ranging in frequencies between 3 KHz and 1 GHz are called?
High frequency
Infrared
Microwaves
Radio Waves
Explanation
Radio waves occupy the lower end of the electromagnetic spectrum, typically between 3 KHz and 1 GHz.
Q.3 Super High Frequency (SHF) is primarily used in?
AM Radio
FM Radio
Satellite communication
None
Explanation
SHF is utilized for satellite communication and modern wireless networking due to its high bandwidth and performance.
Q.4 Which type of media transports data as electromagnetic waves without the use of a physical conductor?
Unguided Media
Guided Media
Satellite communication
None
Explanation
Unguided media, or wireless media, transmits electromagnetic signals through the air or vacuum without a physical wire.
Q.5 Radio waves are characterized as being?
Omnidirectional
Unidirectional
Bidirectional
None
Explanation
Radio waves propagate in all directions from the source antenna, making them omnidirectional.
Q.6 Which type of wave is commonly used in wireless network radar systems?
Radio Waves
Microwave
Infrared
None
Explanation
Microwaves are the standard frequency range used in radar systems and various high-speed wireless communications.
Q.7 Which of the following wireless network technologies is applied in cancer treatment?
Radio Waves
Microwave
Infrared
None
Explanation
Microwaves are used in medical treatments such as microwave thermotherapy or ablation to target and treat cancer cells.
Q.8 Which of the following communications is used for short-range links between personal computers and peripheral devices?
Radio Waves
Microwaves
Infrared Waves
None
Explanation
Infrared waves are used for very short-range, line-of-sight communication between devices like computers, printers, and remotes.
Q.9 Which of the following is NOT an unguided medium?
Radio Waves
Microwaves
Infrared Waves
Twisted Pair
Explanation
Twisted Pair is a guided (wired) medium, while the others are unguided (wireless) media.
Q.10 Radio waves typically use which type of propagation?
SKY
Microwaves
Ground
Line of sight
Explanation
Radio waves often utilize sky propagation, reflecting off the ionosphere to travel long distances around the Earth’s curvature.
Q.11 In a communication satellite, the multiple repeaters are known as?
Modulators
Detectors
Transponders
None
Explanation
A transponder is a wireless communication device on a satellite that receives, amplifies, and retransmits signals.
Q.12 Which of the following are examples of devices that use electromagnetic waves?
FM & AM Radio
Wireless Network
Radar & Microwave
All of these
Explanation
All the listed technologies utilize different frequencies within the electromagnetic spectrum for data transmission.
Q.13 Which type of waves generally do not penetrate through solid objects like walls?
Infrared Waves
Radio Waves
Microwaves
All of these
Explanation
High-frequency waves, particularly infrared and certain microwaves, are easily blocked by solid obstacles like walls.
Q.14 When a mobile phone is turned on, what type of waves does it primarily emit to communicate?
Infrared Waves
Radio Waves
Microwaves
None
Explanation
Mobile phones primarily communicate using radio waves (RF signals) to connect with cellular base stations.
Q.15 Which type of waves are typically used inside Fiber Optic cables?
Infrared Waves
Radio Waves
Microwaves
None
Explanation
Fiber optic systems typically use infrared light (a form of electromagnetic wave) to carry data through the glass fibers.
Q.16 Microwaves were introduced for practical communication around which year?
1988
1946
1956
None
Explanation
The development and introduction of microwave communication systems for widespread use accelerated around 1946.
Q.17 What type of waves are most commonly used for satellite transmissions?
Radio Waves
Microwaves
Infrared Waves
None
Explanation
Satellites communicate using specific radio frequency bands assigned for long-distance space-to-earth transmissions.
Q.18 What was the name of the first artificial Earth satellite?
Sputnik 1
Aryabhata
Ohsumi
None
Explanation
Sputnik 1 was the first artificial satellite, launched into orbit by the Soviet Union on October 4, 1957.
Q.19 Which of the following was the first Indian satellite?
Sputnik 1
Aryabhata Spacecraft
Ohsumi
None
Explanation
Aryabhata was India’s first satellite, launched on April 19, 1975, named after the famous Indian astronomer.
Q.20 Which satellite constellation is used for GPS navigation services in India?
Sputnik 1
Aryabhata Spacecraft
NavIC
None
Explanation
NavIC (Navigation with Indian Constellation) is India’s autonomous regional satellite navigation system.
Q.21 What does the acronym NavIC stand for?
Navigation With Indian Constellation
Navigate With Indian Constellation
Navigation With Indian Collection
None
Explanation
NavIC stands for Navigation with Indian Constellation, which provides accurate positioning services over India.
Related Link
| S.NO | MCQ | SET-1 | SET-2 | SET-3 |
| 1 | BASIC | Click | Click | Click |
| 2 | TRANSMISSION MEDIA | Click | Click | Click |
| 3 | DATA MODEMS | Click | Click | Click |
| 4 | DATA COMMUNICATION | Click | Click | Click |
| 5 | NETWORKING FUNDAMENTALS | Click | Click | Click |
| 6 | OSI MODEL | Click | Click | Click |
| 7 | PROTOCOL | Click | Click | Click |
| 8 | LAN | Click | Click | Click |
| 9 | MAN | Click | Click | Click |
| 10 | WAN | Click | Click | Click |
| 11 | WIRELESS COMMUNICATION | Click | Click | Click |
| 12 | SECURITY & PRIVACY | Click | Click | Click |