ADV-UNIT-5-TOPIC-Signals,Modem,Codec,Multiplexing

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#1. What type of signal is represented by a continuous waveform?

#2. Which signal type is more resistant to noise and interference?

#3. In which form is digital information typically represented?

#4. What is the main advantage of digital signals over analog signals for long-distance transmission?

#5. Which type of signal can have infinite precision within a range?

#6. What does a digital signal consist of?

#7. Which of the following is an example of an analog signal?

#8. What type of processing is often required for manipulating analog signals?

#9. Which signal type is commonly used in traditional clock mechanisms with clock hands?

#10. What is the main disadvantage of analog signals over digital signals?

#11. In digital communication, what do the 0s and 1s represent?

#12. Which type of signal is commonly used in modern telecommunications systems?

#13. What is the primary reason for using digital signals in computers?

#14. Which signal type is represented by a series of voltage pulses?

#15. What is the primary limitation of digital signals?

#16. Which signal type is more suitable for representing human voice?

#17. What type of waveform is often used to represent analog signals?

#18. In which form are analog signals susceptible to degradation over long distances?

#19. Which type of processing is typically required for manipulating digital signals?

#20. Which of the following is an example of a digital signal?

#21. What does the term "modem" stand for?

#22. What is the primary purpose of modulation in a modem?

#23. Which modulation technique involves altering the amplitude of a carrier wave?

#24. In the demodulation process, what does a modem do?

#25. Which type of modem is commonly used for dial-up internet connections?

#26. What is the main advantage of a DSL modem over a traditional analog modem?

#27. Which type of modem uses cable television lines for internet access?

#28. What is the primary transmission medium for a fiber optic modem?

#29. In wireless communication, what type of modem enables Wi-Fi connections?

#30. Which modem type is suitable for areas where wired connections are not feasible?

#31. What is the purpose of a modem in a digital communication system?

#32. Which modulation technique involves altering the frequency of a carrier wave?

#33. What is a common use of a wireless modem?

#34. Which modem type is designed for high-speed internet connections using telephone lines?

#35. What is the function of a modem in a digital subscriber line (DSL) system?

#36. What does the term "modem" stand for?

#37. What is the primary purpose of modulation in a modem?

#38. Which modulation technique involves altering the amplitude of a carrier wave?

#39. In the demodulation process, what does a modem do?

#40. Which type of modem is commonly used for dial-up internet connections?

#41. What is the main advantage of a DSL modem over a traditional analog modem?

#42. Which type of modem uses cable television lines for internet access?

#43. What is the primary transmission medium for a fiber optic modem?

#44. In wireless communication, what type of modem enables Wi-Fi connections?

#45. Which modem type is suitable for areas where wired connections are not feasible?

#46. What is the purpose of a modem in a digital communication system?

#47. Which modulation technique involves altering the frequency of a carrier wave?

#48. What is a common use of a wireless modem?

#49. Which modem type is designed for high-speed internet connections using telephone lines?

#50. What is the function of a modem in a digital subscriber line (DSL) system?

#51. What does the term "codec" stand for?

#52. What is the primary function of a codec?

#53. Which type of codec preserves all the original data after compression and decompression?

#54. What is a characteristic of lossy codecs?

#55. Which type of codec is commonly used for compressing music files with a balance between quality and file size?

#56. In video streaming, why are codecs essential?

#57. Which video codec is commonly used for online video streaming and compression?

#58. What is the purpose of a lossy audio codec like MP3?

#59. Which image codec is commonly used for compressing photographic images?

#60. What type of data does a speech codec typically compress?

#61. Which of the following is a characteristic of lossless codecs?

#62. In what context is a codec used to balance quality and file size in a multimedia file?

#63. Which codec is commonly used for compressing graphics with transparency?

#64. What role do codecs play in streaming services?

#65. Why are lossy codecs often used in video and audio streaming applications?

#66. What is the primary purpose of multiplexing in telecommunications?

#67. In which type of multiplexing are signals transmitted over the same channel but at different time intervals?

#68. Which type of multiplexing is commonly used in radio and television broadcasting?

#69. In Wavelength Division Multiplexing (WDM), what is divided into different channels?

#70. Code Division Multiplexing (CDM) is commonly used in which type of communication networks?

#71. What is the purpose of assigning unique codes in Code Division Multiplexing (CDM)?

#72. Which type of multiplexing involves using different physical pathways for each input signal?

#73. Orthogonal Frequency Division Multiplexing (OFDM) is commonly used in which communication systems?

#74. What does OFDM stand for in telecommunication?

#75. Polarization Division Multiplexing (PDM) is used to increase capacity in which communication medium?

#76. Which multiplexing technique assigns specific time slots to different signals for transmission?

#77. In Time Division Multiplexing (TDM), what happens during each time slot?

#78. What is the primary advantage of Multiplexing in communication systems?

#79. Which type of multiplexing is used to optimize the use of available bandwidth in optical fiber communication?

#80. What is the primary goal of Frequency Division Multiplexing (FDM)?

#81. In which scenario is Code Division Multiplexing (CDM) particularly beneficial?

#82. What is the primary advantage of Space Division Multiplexing (SDM)?

#83. What role does Multiplexing play in satellite communication systems?

#84. Which type of Multiplexing involves dividing the available frequency spectrum into narrow subcarriers?

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