WorksheetsIntroduction to Wireless Communication
Total questions: 15
Worksheet time: 8mins
Who invented the wireless telegraph in 1896?
Nikola Tesla
Thomas Edison
Alexander Graham Bell
Guglielmo Marconi
What is the frequency range of microwave signals?
1 GHz to 40 GHz
1 Hz to 1 kHz
50 GHz to 100 GHz
200 MHz to 1 GHz
Which type of media guides electromagnetic signals along a solid path?
Optical fiber
Unguided media
Wireless transmission
Atmosphere
What is the main application of terrestrial microwave antennas?
Long haul telecommunications
Infrared transmission
Broadcast radio
Satellite communication
What is the frequency range of infrared signals?
1 Hz to 1 kHz
1012 Hz to 1014 Hz
200 MHz to 1 GHz
50 GHz to 100 GHz
Which type of transmission media does not guide electromagnetic signals?
Copper twisted pair
Copper coaxial cable
Unguided media
Optical fiber
What is the purpose of a parabolic 'dish' antenna in microwave transmission?
Broadcast radio
Infrared transmission
Line-of-sight transmission
Omnidirectional transmission
Which frequency range is suitable for omnidirectional applications?
1 GHz to 40 GHz
30 MHz to 1 GHz
10^12 Hz to 10^14 Hz
1 Hz to 1 kHz
What is the main application of broadcast radio antennas?
Private business networks
Short point-to-point links
Television distribution
Long haul telecommunications
What is the characteristic of infrared signals regarding walls?
Penetrates walls easily
Requires line of sight
Reflects off walls
Absorbed by walls
Which type of wireless system focuses on voice communication?
Sensor networks
Multihop ad hoc networks
Wireless LANs
Personal communication systems
What is the main limitation of wireless technologies mentioned in the text?
Device limitations
Technical difficulties
Political difficulties
Lack of an industry-wide standard
What is the main focus of wireless LANs?
High bit-rate transmission
Voice communication
Infrastructure
Sensor networks
What is the main application of multihop ad hoc networks?
Voice communication
High bit-rate transmission
Emerging applications
Long haul telecommunications
What is the main characteristic of wireless communication systems mentioned in the text?
Limited growth
Continuous growth in the market
Limited diversity of standards
Decreasing number of subscribers
