What is wireless communication?

• Sending data from one location to with the use of physical medium
  

• Sending data from one location to another without the use of physical medium
  

• Sending data from one location to another without the use of virtual medium
  

• None of the mentioned

Which of the following is the drawback for cordless telephones?

• Security
  

• Wireless technology
  

• Limited coverage area
  

• Mobile

Which of the following problem occur due to adjacent channel interference?

• Cross talk

• Missed calls

• Blocked calls

• Near-far effect

Which of the following do not undergo free space propagation?

• Wired telephone systems

• Wireless line of sight radio links

• Microwave line of sight radio links

• Satellite communication system

Which of the following is not used to improve received signal quality over small scale times and distance?

• Diversity

• Channel coding
  

• Equalization

• Modulation

What is the standard form of AMPS?

• Advanced Mobile Phone Signal

• Advanced Mobile Phone Speed

• Advanced Mobile Phone System

• None of the above

In which one of the following wireless communication system the relative power consumption is high?

• WIFI

• Zigbee

• Bluetooth

• None of the above

What is the standard full form of GPRS?

• General Phone Radio Service

• General Packet Radio System

• General Packet Radio Service

• General Phone Radio System

The amplitude modulation is the process in which amplitude of the carrier signal changes with respect to _____________ signal

• Modulating signal

• Carrier signal

• Suppressed carrier modulating signal

• Frequency signal

Who invented first wireless radio wave over 1700 miles?

• Armstrong

• Oliver Lodge

• Goglielmo Marconi

• Samuel Morse