Title MCQ MOBILE AND WIRELESS COMMUNICATION.pdf ✅

Way to Polytechnic ● Way to Polytechnic MOBILE AND WIRELESS COMMUNICATION Unit I Overview of Cellular Systems 1. **What is the primary purpose of cellular systems in mobile communication?** a. Signal encryption b. Frequency modulation c. Geographical area division d. Power amplification 2. **Which generation of mobile networks introduced digital voice communication and data services?** a. 1G b. 2G c. 3G d. 4G 3. **In cellular networks, what is the basic idea behind frequency reuse?** a. Efficient power usage b. Maximizing spectrum utilization c. Minimizing interference d. Reducing latency 4. **What does the term "cochannel interference" refer to in cellular communication?** a. Interference from adjacent channels b. Interference within the same frequency channel c. Interference due to hardware malfunction d. Interference during handovers 5. **Which concept allows multiple cells to use the same set of frequencies without significant interference?** a. Time division multiplexing b. Frequency reuse c. Code division multiple access d. Space division multiplexing 6. **What is the purpose of handovers in cellular networks?** a. To switch between different frequency bands b. To transfer a call from one cell to another c. To encrypt the communication signal d. To increase the power of the transmitted signal 1
Way to Polytechnic ● Way to Polytechnic 7. **Which generation of mobile networks introduced high-speed data services and mobile internet?** a. 2G b. 3G c. 4G d. 5G 8. **In cellular systems, what is the term used for the interference caused by signals from adjacent frequency channels?** a. Cochannel interference b. Adjacent channel interference c. Cross-channel interference d. Intra-cell interference 9. **What is the key advantage of 4G (LTE) technology over previous generations in terms of data transfer rates?** a. Higher latency b. Lower data rates c. Faster data transfer rates d. Limited coverage 10. **Which technology is a key enabler for the high data rates and low latency promised by 5G networks?** a. Multiple Input Multiple Output (MIMO) b. Frequency modulation c. Time division multiplexing d. Code division multiple access 11. **What is the main focus of 5G networks compared to previous generations?** a. Voice communication b. Low power consumption c. Enhanced mobile broadband and IoT d. Analog signal transmission 12. **Which cellular concept involves dividing a geographical area into smaller cells to increase capacity and coverage?** a. Frequency reuse b. Cell splitting c. Cochannel interference d. Handover 2
Way to Polytechnic ● Way to Polytechnic 13. **What is the purpose of the guard band in cellular systems?** a. To prevent unauthorized access b. To provide additional security c. To minimize interference between adjacent channels d. To increase the coverage area 14. **In cellular networks, what is the primary role of base stations?** a. Signal encryption b. Signal reception c. Signal transmission and reception d. Frequency modulation 15. **Which term is used to describe the interference that occurs when signals from one cell reach another cell directly?** a. Adjacent channel interference b. Cochannel interference c. Cross-channel interference d. Intra-cell interference 16. **What is the significance of the handover process in cellular communication?** a. To increase call duration b. To minimize interference c. To reduce power consumption d. To maintain continuity during movement 17. **Which technology allows multiple users to share the same frequency band simultaneously without interference?** a. Frequency reuse b. Time division multiplexing c. Code division multiple access d. Space division multiplexing 18. **In the context of cellular systems, what does the term "cell breathing" refer to?** a. Expansion and contraction of cell size based on traffic b. Frequency modulation c. Handover process d. Cell splitting 19. **Which of the following is a key feature of 3G networks compared to 2G networks?** a. Analog voice communication b. Digital voice communication and data services c. High-speed data services d. Low-frequency bands 3
Way to Polytechnic ● Way to Polytechnic 20. **What is the primary objective of frequency planning in cellular networks?** a. To increase interference b. To maximize spectrum utilization c. To minimize signal coverage d. To reduce the number of cells Answers: 1. c. Geographical area division 2. b. 2G 3. b. Maximizing spectrum utilization 4. b. Interference within the same frequency channel 5. b. Frequency reuse 6. b. To transfer a call from one cell to another 7. c. 4G 8. b. Adjacent channel interference 9. c. Faster data transfer rates 10. a. Multiple Input Multiple Output (MIMO) 11. c. Enhanced mobile broadband and IoT 12. b. Cell splitting 13. c. To minimize interference between adjacent channels 14. c. Signal transmission and reception 15. b. Cochannel interference 16. d. To maintain continuity during movement 17. c. Code division multiple access 18. a. Expansion and contraction of cell size based on traffic 19. b. Digital voice communication and data services 20. b. To maximize spectrum utilization 4