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Wireless and Mobile Communication Multiple-Choice Questions (MCQs)

Wireless communication is the transmission of any piece of information/data between devices without the requirement for a physical connection. Wireless communication is becoming an increasingly important aspect of our daily lives. Wireless communication allows devices to communicate and exchange information over a short distance by transferring data, speech, and multimedia across a wireless network.

Mobile communication and wireless communication are frequently linked because mobile communication incorporates wireless communication properties. We can communicate with any number of users at any time and from any location thanks to mobile communication. In mobile communication, we have many networks, generally referred to as cellular networks, that let us communicate more effectively and with less interruption.

WIFI, RFID, NFC, and Bluetooth are some of the basic and daily used practical examples of mobile and wireless communication.

Wireless and Mobile Communication MCQs with Answers

Explore and practice the most popular multiple-choice questions with answers on wireless and mobile communication. These Wireless and Mobile Communication MCQs are written for beginners as well as advanced that are helpful to learn, test, and enhance the knowledge of Wireless and Mobile Communication. This set of MCQs covers the topic such as paging systems, cordless telephone systems, cellular telephone systems, MIMO wireless communication, handoff strategies, different types of wireless protocols, interference, types of the channel assignment, frequency reuse, coverage properties, Amplitude and frequency modulation and many more.

1. Which of the following statement is true about Wireless and Mobile Communication?

  1. Wireless communication entails the transfer of information or data using standing waves
  2. Wireless communication entails the transfer of information or data using radio waves
  3. Wireless communication entails the transfer of information or data using longitudinal waves
  4. Wireless communication entails the transfer of information or data using electromagnetic waves

Answer: D) Wireless communication entails the transfer of information or data using electromagnetic waves.

Explanation:

Wireless communication entails the transfer of information or data using electromagnetic waves.

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2. Which of the following are devices that turn information or data into electromagnetic waves that may be delivered wirelessly?

  1. Transmitters
  2. Contributors
  3. Diffuser
  4. None of the above

Answer: A) Transmitters

Explanation:

Transmitters are devices that turn information or data into electromagnetic waves that may be delivered wirelessly.

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3. Which of the following are the foundation of mobile communication systems?

  1. Wireless network
  2. Radio network
  3. Cellular network

Answer: C) Cellular network

Explanation:

Cellular networks are the foundation of mobile communication systems.

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4. Are LAN, WAN, and PAN examples of wireless communication?

  1. True
  2. False

Answer: A) True

Explanation:

Yes, LAN, WAN, and PAN are examples of wireless communication.

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5. Which of the following is not an example of wireless communication?

  1. Zigbee
  2. Near-field communication
  3. Infrared communication
  4. None of the above

Answer: D) None of the above

Explanation:

All the examples given in the option are considered wireless communication, some other examples of wireless communication are as follows:

  • Satellite communication
  • Bluetooth
  • Wi-Fi
  • Radio frequency identification

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6. Which of the following is a disadvantage of using wireless communication?

  1. Wireless communication has a shorter range than traditional communications
  2. Wireless communication can be hampered by interference from other wireless devices
  3. Interference can cause signal loss or disturbances in wireless communication
  4. All of the above

Answer: D) All of the above

Explanation:

Following are the disadvantages of using wireless communication:

  • Wireless communication has a shorter range than traditional communications
  • Wireless communication can be hampered by interference from other wireless devices
  • Interference can cause signal loss or disturbances in wireless communication

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7. What is the full form of MIMO wireless communication?

  1. Mobile integrated more output
  2. Multiple input Multiple output
  3. Mobile integrated multipath operation
  4. Mobile integrated multiplexing output

Answer: B) Multiple input Multiple output

Explanation:

MIMO wireless communication stands for: Multiple input Multiple output.

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8. Which of the following is True about MIMO wireless communication?

  1. Multiple antennas are employed at both ends of the communication link in a MIMO system
  2. MIMO does not give diversity gain
  3. MIMO allows for the creation of serial transmission lines
  4. All of the above

Answer: A) Multiple antennas are employed at both ends of the communication link in a MIMO system.

Explanation:

Multiple antennas are employed at both ends of the communication link in a MIMO system.

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9. ____ is a method used in MIMO systems to boost signal intensity in one direction alone.

  1. Diversity gain
  2. Beamforming
  3. Beam integration
  4. Bean configuration

Answer: B) Beamforming

Explanation:

Beamforming is a method used in MIMO systems to boost signal intensity in one direction alone.

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10. In a paging system, the message can be in which of the following form?

  1. Text
  2. Voice
  3. Tones
  4. All of the above

Answer: D) All of the above

Explanation:

The message in a paging system can take several forms, including text, speech, and tones.

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11. Paging systems are primarily used for ____ communication.

  1. One-way
  2. Two-way

Answer: A) One-way

Explanation:

Paging systems are primarily used for one-way communication.

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12. What is the coverage area of a basic paging system?

  1. 20-25 Km
  2. 2-5 Km
  3. 30-40 Km
  4. Up to 100 Km

Answer: B) 2-5 Km

Explanation:

A basic paging system has a coverage area of 2 to 5 km.

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13. Which of the following has the highest level of message priority in the paging system?

  1. Priority messaging
  2. Silent or low priority
  3. Normal priority
  4. Emergency priority

Answer: D) Emergency priority

Explanation:

Emergency priority is the highest degree of communication priority allocated for urgent or emergencies.

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14. Can video messages be sent using the paging system?

  1. Yes
  2. No

Answer: B) No

Explanation:

Video messages are often not supported by paging systems.

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15. Paging device that individuals carry or place at specific locations to receive messages is known as ____.

  1. Transmitter
  2. Beeper
  3. Receiver
  4. Controller

Answer: B) Beeper

Explanation:

A paging device that individuals carry or place at specific locations to receive messages is known as a beeper.

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16. Which of the following devices is in charge of the paging system's management and control, including message scheduling and delivery?

  1. Paging configuration
  2. Paging frequency
  3. Paging controller
  4. Paging protocol

Answer: C) Paging controller

Explanation:

A paging controller is a device in charge of the paging system's management and control, including message scheduling and delivery.

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17. Which of the following is not used in a paging system?

  1. FDMA
  2. TDMA
  3. SDMA
  4. CDMA

Answer: C) SDMA

Explanation:

SDMA (Space Division Multiple Access) is not used in a paging system.

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18. Which of the following is not true about the paging system?

  1. Paging devices often consume more energy
  2. Paging systems are scalable
  3. Message prioritization is possible with paging systems
  4. Paging systems are frequently used for easy and effective communication

Answer: A) Paging devices often consume more energy.

Explanation:

Paging devices use a very less amount of power.

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19. Is it possible to combine a paging system with other communication systems, such as phone systems or computer networks?

  1. Yes
  2. No

Answer: A) Yes

Explanation:

Yes, we can integrate a paging system with other communication systems, such as phone systems.

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20. Which of the following characteristics of a cellular system guarantees that the call is neither interrupted nor dropped when the user switches between cells?

  1. Roaming
  2. Sectorization
  3. Multiple access schemes
  4. Handoff

Answer: D) Handoff

Explanation:

Handoff guarantees that the call is neither interrupted nor dropped when the user switches between cells.

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21. Which of the following multiple access schemes is not used in a cellular system?

  1. FDMA
  2. TDMA
  3. SDMA
  4. CDMA

Answer: C) SDMA

Explanation:

SDMA is not typically employed in the cellular system.

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22. What is the full form of MSC in terms of cellular telephone systems?

  1. Multiple system center
  2. Mobile security center
  3. Mobile system center
  4. Mobile switching center

Answer: D) Mobile switching center

Explanation:

MSC stands for Mobile switching center.

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23. Which of the following is true about MSC?

  1. The MSC is in charge of routing incoming and outgoing calls throughout the cellular network
  2. The MSC is in charge of the handoff procedure
  3. The MSC is in charge of controlling subscriber mobility
  4. All of the above

Answer: D) All of the above

Explanation:

The MSC is in charge of routing incoming and outgoing calls inside the cellular network. The MSC also manages the handoff procedure.The MSC is in charge of controlling subscriber mobility.

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24. Which of the following is the MSC that acts as a bridge between the cellular network and other networks?

  1. Home location register (HLR)
  2. Visitor location Register (VLR)
  3. Gateway MSC
  4. Authentication centre (AuC)

Answer: C) Gateway MSC

Explanation:

The GMSC is the MSC that acts as a bridge between the cellular network and other networks.

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25. Forward voice channel operates in which of the following direction?

  1. Downlink
  2. Uplink
  3. Both

Answer: A) Downlink

Explanation:

The Forward voice channel operates in the Downlink direction (i.e., from the base station to the mobile device).

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26. What is the full form of MIN in wireless communication?

  1. Multiple identification numbers
  2. Mobile identification number
  3. Multipath identification number
  4. Mean identification number

Answer: B) Mobile identification number

Explanation:

MIN stands for a Mobile identification number.

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27. Which of the following is a unique 10-digit number issued to a mobile device or cellular network subscriber?

  1. Electronic serial number
  2. Station class mark
  3. Mobile identification number

Answer: C) Mobile identification number

Explanation:

MIN is a unique 10-digit number issued to a mobile device or cellular network subscriber.

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28. ____ is a one-of-a-kind serial number that identifies the mobile device and is kept in the hardware.

  1. Electronic serial number
  2. Station class mark
  3. Mobile identification number

Answer: A) Electronic serial number

Explanation:

Electronic serial number is a one-of-a-kind serial number that identifies the mobile device and is kept in the hardware.

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29. Which of the following is True about station class marks?

  1. The network uses the SCM to determine how to manage and route calls
  2. The network uses the SCM to authenticate the device and assure its network compatibility
  3. The SCM is a critical component of a mobile device's identification in a cellular network

Answer: A) The network uses the SCM to determine how to manage and route calls.

Explanation:

The network uses the SCM to determine how to manage and route calls.

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30. On network maps, the cells in the cellular system are often displayed as ____.

  1. Triangle
  2. Oval
  3. Pentagon
  4. Hexagon

Answer: D) Hexagon

Explanation:

On network maps, the cells in the cellular system are often displayed as hexagons.

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31. Cellular networks use frequency reuse to maximize the usage of available radio spectrum?

  1. True
  2. False

Answer: A) True

Explanation:

Cellular networks use frequency reuse to maximize the usage of available radio spectrum.

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32. Cordless telephone systems communicate by which of the following waves between the cordless handset and the base station?

  1. Microwaves
  2. Radio waves
  3. Infrared waves

Answer: B) Radio waves

Explanation:

Cordless telephone systems communicate by radio waves between the cordless handset and the base station.

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33. Which of the following protocol is used by the paging system?

  1. DECT
  2. DSS
  3. FLEX
  4. GSM

Answer: C) FLEX

Explanation:

FLEX (Flexible Wide Area Paging Protocol) is used by the paging system.

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34. Which of the following protocol is used by cordless telephone systems?

  1. DECT
  2. POCSAG
  3. FLEX
  4. GSM

Answer: A) DECT

Explanation:

Digital Enhanced Cordless Telecommunications (DECT) is used by cordless telephone systems.

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35. Are Cordless handsets powered by rechargeable batteries? True or false?

  1. True
  2. False

Answer: A) True

Explanation:

Cordless handsets are powered by rechargeable batteries.

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36. Which of the following channel assignment strategy-specific channels are permanently assigned to each cell?

  1. Fixed channel assignment
  2. Dynamic channel assignment
  3. Hybrid channel assignment
  4. Fractional channel assignment

Answer: A) Fixed channel assignment

Explanation:

Specific channels are permanently assigned to each cell under the Fixed channel assignment technique.

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37. By allocating smaller segments of channels as needed, ____ channel assignment enables more efficient utilization of channel resources.

  1. Fixed channel assignment
  2. Dynamic channel assignment
  3. Hybrid channel assignment
  4. Fractional channel assignment

Answer: D) Fractional channel assignment

Explanation:

By allocating smaller segments of channels as needed, fractional channel assignment enables more efficient utilization of channel resources.

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38. In fixed channel assignment, the channels assigned to a cell are available to users inside that cell as well as to users in neighboring cells? True or False.

  1. True
  2. False

Answer: B) False

Explanation:

The channels allotted to a cell are only available to serve the users inside that cell under fixed channel assignment.

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39. The same set of channels is reused in neighboring cells in FCA. True or False?

  1. True
  2. False

Answer: B) False

Explanation:

The same set of channels is not reused in neighboring cells in FCA. Each cell has its own set of channels.

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40. Which channel assignment technique relies on continual monitoring of cellular network traffic patterns and channel use?

  1. Fixed channel assignment
  2. Dynamic channel assignment
  3. Hybrid channel assignment
  4. Fractional channel assignment

Answer: B) Dynamic channel assignment

Explanation:

DCA relies on continual monitoring of cellular network traffic patterns and channel use.

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41. Which of the following is True about RSSI?

  1. RSSI is calculated by measuring the received signal's power level at the receiver
  2. The RSSI is calculated by measuring the power of the broadcast signal at the sender

Answer: A) RSSI is calculated by measuring the received signal's power level at the receiver.

Explanation:

RSSI is calculated by measuring the received signal's power level at the receiver.

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42. When the signal strength or quality from the serving cell falls below a specific threshold, handoff occurs. True or False?

  1. True
  2. False

Answer: A) True

Explanation:

Handoff occurs when the signal strength or quality from the serving cell falls below a specific threshold.

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43. Handoff does are just applied to voice conversations? True or false.

  1. True
  2. False

Answer: B) False

Explanation:

Handoff does not just apply to voice conversations, but also to mobile data connections.

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44. Which of the following type of handoff occurs when the mobile device entirely shifts from the serving cell to the destination cell before the connection is transferred?

  1. Soft handoff
  2. Make-before-break handoff
  3. Hard handoff
  4. Mobile-assisted handoff

Answer: C) Hard handoff

Explanation:

Hard handoff occurs when the mobile device entirely shifts from the serving cell to the destination cell before the connection is transferred.

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45. In which handoff, both the serving and target cells are simultaneously connected?

  1. Soft handoff
  2. Make-before-break handoff
  3. Hard handoff
  4. Mobile-assisted handoff

Answer: A) Soft handoff

Explanation:

In the soft handoff, both the serving and target cells are simultaneously connected.

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46. Which of the handoff approaches listed below enables centralized control and administration of handoff operations?

  1. Network-controlled handoff
  2. Make-before-break handoff
  3. Load-based handoff
  4. Mobile-assisted handoff

Answer: A) Network-controlled handoff

Explanation:

Network-controlled handoff approaches enable centralized control and administration of handoff operations.

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47. ____ entails the mobile device actively participating in the handoff decision-making process.

  1. Network-controlled handoff
  2. Make-before-break handoff
  3. Load-based handoff
  4. Mobile-assisted handoff

Answer: D) Mobile-assisted handoff

Explanation:

Mobile-Assisted Handoff (MAHO) entails the mobile device actively participating in the handoff decision-making process.

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48. Which interference arises when numerous cells or channels in a wireless system operate on the same frequency?

  1. Parallel channel interference
  2. Co-channel interference
  3. Adjacent channel interference

Answer: B) Co-channel interference

Explanation:

Co-channel interference arises when numerous cells or channels in a wireless system operate on the same frequency.

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49. Which of the following produce multi-path interference in wireless propagation situations?

  1. Signal reflections
  2. Diffraction
  3. Scattering
  4. All of the above

Answer: D) All of the above

Explanation:

Signal reflections, diffraction, and scattering produce multi-path interference in wireless propagation situations.

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50. More cells can operate at the same frequency when co-channel reuse ratios are ____.

  1. Higher
  2. Lower

Answer: A) Higher

Explanation:

More cells can operate at the same frequency when co-channel reuse ratios are higher.

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51. An efficient way to share communication channels or lines among a large number of users is called ____..

  1. Multi shifting
  2. Trunking
  3. Grading service
  4. Pull of service

Answer: B) Trunking

Explanation:

An efficient way to share communication channels or lines among a large number of users is called trunking.

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52. What is the full form of GOS?

  1. Grades operation service
  2. Gradual operated service
  3. Grades of service
  4. Grades optional service

Answer: C) Grades of service

Explanation:

GOS stands for Grades of service.

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53. Do Microcells cover a larger area compared to picocells?

  1. True
  2. False

Answer: A) True

Explanation:

Microcells cover a larger area compared to picocells.

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54. Which of the following techniques is used when a cell gets overcrowded, resulting in congestion and lower quality of service?

  1. Sectoring
  2. Scattering
  3. Cell splitting
  4. Diffusion

Answer: C) Cell splitting

Explanation:

Cell splitting techniques are used when a cell gets overcrowded, resulting in congestion and lower quality of service.

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55. ____ may be used to increase coverage in cellular networks by deflecting and distributing the signal in multiple directions.

  1. Sectoring
  2. Scattering
  3. Cell splitting

Answer: B) Scattering

Explanation:

Scattering may be used to increase coverage in cellular networks by deflecting and distributing the signal in multiple directions.

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56. A higher SIR (Signal-to-Interference Ratio) indicates ____.

  1. Greater signal quality and Greater levels of interference
  2. Lower signal quality and fewer levels of interference
  3. Greater signal quality and fewer levels of interference

Answer: C) Greater signal quality and fewer levels of interference.

Explanation:

A higher SIR indicates greater signal quality and fewer levels of interference.

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57. ____ take in weak or degraded signals, amplify them, and then retransmit them with greater strength and quality.

  1. Transmitters
  2. Receiver
  3. Zonal receivers
  4. Repeaters

Answer: D) Repeaters

Explanation:

Repeaters take in weak or degraded signals, amplify them, and then retransmit them with greater strength and quality.

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58. In which propagation model the route loss is calculated depending on the distance between the transmitter and receiver as well as the operating frequency?

  1. Small-scale propagation model
  2. Lee model
  3. Free space propagation model

Answer: C) Free space propagation model

Explanation:

The route loss is calculated depending on the distance between the transmitter and receiver as well as the operating frequency.

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59. Which of the following type of antenna has an omnidirectional radiation pattern?

  1. Isotropic antenna
  2. Loop antenna
  3. Directional antenna

Answer: A) Isotropic antenna

Explanation:

Isotropic antenna has an omnidirectional radiation pattern.

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60. The Okumura-Hata Model is used to forecast route loss in ____ cellular communication networks.

  1. Indoor cellular communication networks
  2. Outdoor cellular communication networks

Answer: B) Outdoor cellular communication networks

Explanation:

The Okumura-Hata Model is used to forecast route loss in outdoor cellular communication networks.

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61. Which of the following model is used for predicting radio wave propagation in the presence of uneven terrain?

  1. Walfisch-Ikegami Model
  2. Two-Ray Ground Reflection Model
  3. Okumura-Hata Model
  4. Longley-Rice model

Answer: D) Longley-Rice model

Explanation:

The Longley-Rice model is used for predicting radio wave propagation in the presence of uneven terrain.

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62. Which of the following factor takes into account the existence of impediments in the propagation routes?

  1. Power factor
  2. Urban gain
  3. Clutter factor
  4. Urban factor

Answer: C) Clutter factor

Explanation:

The clutter factor takes into account the existence of impediments in the propagation route.

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63. ____ is a wireless communication phenomenon in which the intensity or quality of a received signal varies across time and location.

  1. Peering
  2. Interfering
  3. Fading
  4. Fluctuating

Answer: C) Fading

Explanation:

Fading is a wireless communication phenomenon in which the intensity or quality of a received signal varies across time and location.

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64. Which type of fading happens when there are several scattering pathways between the transmitter and the receiver?

  1. Rician fading
  2. Rayleigh fading

Answer: B) Rayleigh fading

Explanation:

Rayleigh fading happens when there are several scattering pathways between the transmitter and the receiver.

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65. When compared to FM transmissions, AM signals have a ____ bandwidth.

  1. Moderate
  2. Larger
  3. Smaller

Answer: C) Smaller

Explanation:

When compared to FM transmissions, AM signals have a smaller bandwidth.

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66. Among AM (Amplitude modulation) and FM (Frequency modulation) which is more prone to noise and interference?

  1. AM (Amplitude modulation)
  2. FM (Frequency modulation)

Answer: A) AM (Amplitude modulation)

Explanation:

AM is more prone to noise and interference.

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67. An AM signal's bandwidth is equal to ____ the maximum frequency of the message signal.

  1. Double
  2. Triple
  3. No change

Answer: A) Double

Explanation:

An AM signal's bandwidth is equal to double the maximum frequency of the message signal.

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68. Data is transported straight from the source to the destination without the use of intermediary nodes in ____-hop routing.

  1. Single
  2. Multi
  3. Parallel

Answer: A) Single

Explanation:

Data is transported straight from the source to the destination without the use of intermediary nodes in single-hop routing.

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69. How many types of speech coders are there?

  1. 5
  2. 4
  3. 3
  4. 2

Answer: D) 2

Explanation:

There are mainly two types of speech coder:

  • Waveform coder
  • Vocoders

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70. What is the full form of Vocoder?

  1. Void coder
  2. Voice coder
  3. Visual coder
  4. Virtual coder

Answer: B) Voice coder

Explanation:

Vocoder stands for voice coder.

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