What is the primary function of wireless communication?
a) To transmit data via physical cables
b) To transmit data over a long distance using radio waves
c) To store data locally on devices
d) To enhance wired communication
Which of the following technologies is used for short-range wireless communication?
a) 5G
b) Bluetooth
c) Wi-Fi
d) LTE
What does Wi-Fi stand for?
a) Wireless Fidelity
b) Wireless Frequency
c) Wide Frequency
d) Web Fidelity
Which of the following is a characteristic of 4G wireless networks?
a) Higher latency than 3G
b) Enhanced data transfer speed
c) Limited access to internet services
d) Supports voice calls only
Which of the following is the main advantage of mobile communication technologies like 5G?
a) Low data transfer rates
b) High-speed internet access and low latency
c) Limited coverage area
d) Dependence on wired infrastructure
Which of the following is NOT a component of a wireless communication system?
a) Base station
b) Frequency spectrum
c) Fiber optic cables
d) Antenna
Which frequency range is typically used for mobile phone communication?
a) 100 Hz – 10 kHz
b) 30 MHz – 300 GHz
c) 10 kHz – 300 MHz
d) 1 GHz – 100 GHz
What is the primary purpose of an antenna in wireless communication?
a) To store the data
b) To transmit and receive signals
c) To secure the wireless network
d) To amplify the signal
Which mobile communication technology uses a time-division duplexing (TDD) scheme?
a) 4G LTE
b) 5G NR
c) 2G GSM
d) 3G UMTS
What does LTE stand for in mobile communication?
a) Long-Term Evolution
b) Low-Term Efficiency
c) Local Transmission Encryption
d) Large-Term Expansion
Which of the following is the primary feature of 5G wireless communication?
a) Increased power consumption
b) High data speed and ultra-low latency
c) Limited network coverage
d) No support for mobile internet
Which of the following standards is used for Wi-Fi communication?
a) IEEE 802.11
b) IEEE 802.3
c) IEEE 802.15
d) IEEE 802.5
What is the main advantage of using OFDM (Orthogonal Frequency Division Multiplexing) in wireless communication?
a) Increased interference
b) Efficient use of bandwidth
c) Higher power consumption
d) Reduced data transfer speed
Which of the following is an example of a short-range wireless communication technology?
a) 3G
b) Bluetooth
c) LTE
d) 5G
What is the function of a base station in a wireless communication network?
a) To control data encryption
b) To transmit and receive signals between mobile devices
c) To store all data locally
d) To provide internet access via fiber optic cables
Which of the following is an example of a mobile network standard?
a) 4G LTE
b) Wi-Fi
c) Ethernet
d) Bluetooth
Which of the following technologies is used for cellular mobile communication?
a) GSM
b) ZigBee
c) Wi-Fi
d) Li-Fi
What is the primary challenge faced in wireless communication?
a) High speed
b) Interference and signal attenuation
c) High cost
d) Limited bandwidth
Which of the following wireless technologies supports data speeds up to 10 Gbps?
a) 3G
b) 4G LTE
c) 5G
d) Wi-Fi 6
What is the role of the mobile device in a cellular communication network?
a) To act as a base station
b) To connect to the internet via cables
c) To transmit and receive radio signals to communicate with base stations
d) To store data only
Which wireless technology is used for long-range communication?
a) Bluetooth
b) ZigBee
c) Wi-Fi
d) LTE
Which of the following is a potential drawback of using wireless communication?
a) Limited mobility
b) Data security concerns
c) Lower power consumption
d) Higher data transfer rates
What is the primary function of the GSM standard in mobile communication?
a) Voice and text message communication
b) Wireless internet access
c) Data transfer between local devices
d) Satellite communication
Which mobile communication standard is primarily used in the United States?
a) CDMA
b) GSM
c) LTE
d) WCDMA
What does the term “handover” refer to in mobile communication?
a) Data encryption process
b) The process of transferring a call from one cell tower to another
c) Connecting a mobile device to Wi-Fi
d) Switching between different mobile networks
Which wireless communication standard is primarily used for home automation and sensor networks?
a) ZigBee
b) Bluetooth
c) Wi-Fi
d) LTE
What is the key difference between Wi-Fi and mobile networks?
a) Wi-Fi provides wireless internet access over a short range, while mobile networks provide coverage over a wide area
b) Wi-Fi uses radio frequencies, while mobile networks use optical signals
c) Wi-Fi requires physical cables, while mobile networks do not
d) Mobile networks are slower than Wi-Fi
What is the purpose of frequency reuse in mobile communication?
a) To avoid interference by limiting the number of frequency bands
b) To use the same frequencies in different geographical areas to increase capacity
c) To lower the power consumption of mobile devices
d) To prevent handover between cell towers
Which of the following wireless communication technologies supports the fastest data transfer speeds?
a) Wi-Fi 5
b) 4G LTE
c) 5G
d) Bluetooth
Which of the following is an example of a low-power, short-range wireless technology?
a) Wi-Fi
b) ZigBee
c) LTE
d) 5G
What type of modulation technique is used in most modern wireless communication systems?
a) Amplitude Modulation (AM)
b) Frequency Modulation (FM)
c) Phase Modulation (PM)
d) Quadrature Amplitude Modulation (QAM)
