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Froggy Jumps

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Tech basics quiz

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Hamza Mohammed Mogahed

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Froggy Jumps revisionVersión en línea Tech basics quiz por Hamza Mohammed Mogahed 1 the signal which is symmetric about y- axis is ................ a deterministic b odd c even 2 the process of converting the digital data to digital formats is............. a digital modulation b line coding c synchronization 3 in 8 psk there are ...............different symbols and .............. bits in each symbol a 8,3 b 8,2 c 16, 3 4 there are ............ types of distortion a one b two c three 5 advantages of am modulation a less susceptible to noise b effecient to bandwidth c easy to implement 6 What does cross talk refer to in a communication system? a A modulation technique using amplitude and phase b Thermal noise in a receiver c Unwanted coupling between channels causing interference 7 What is attenuation in signal transmission? a Increase in signal power with distance b Selective enhancement of certain frequencies c Loss of signal strength over distance or through media 8 Which modulation encodes data by varying the carrier’s phase? a Amplitude Modulation (AM) b Frequency Modulation (FM) c Phase Modulation (PM) 9 What distinguishes PM from FM in modulation? a PM uses amplitude; FM uses phase b PM modulates the phase; FM modulates the frequency c PM is digital; FM is analog 10 Define Bit Error Rate (BER) in communications. a The fraction of received bits that are incorrect b The maximum data rate of a channel c The minimum required SNR for transmission 11 What is the difference between bit rate and bandwidth? a Bit rate and bandwidth mean the same thing b Bit rate is physical size; bandwidth is speed c Bit rate is data rate; bandwidth is channel capacity for a signal 12 What does Amplitude Modulation (AM) vary with the carrier? a The frequency of the carrier b The amplitude of the carrier c The phase of the carrier 13 What is 16-QAM an example of? a Quadrature Amplitude Modulation combining amplitude and phase b Frequency Shift Keying c Amplitude Shift Keying 14 Which modulation uses shifts in carrier frequency to encode data? a Amplitude Shift Keying (ASK) b Phase Shift Keying (PSK) c Frequency Shift Keying (FSK) 15 What does ASK stand for in modulation schemes? a Adaptive Spectral Knowledge b Amplitude Shift Keying c Amplitude Signal Keying

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Froggy Jumps

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revisionVersión en línea

por Hamza Mohammed Mogahed

the signal which is symmetric about y- axis is ................

the process of converting the digital data to digital formats is.............

in 8 psk there are ...............different symbols and .............. bits in each symbol

there are ............ types of distortion

advantages of am modulation

What does cross talk refer to in a communication system?

What is attenuation in signal transmission?

Which modulation encodes data by varying the carrier’s phase?

What distinguishes PM from FM in modulation?

Define Bit Error Rate (BER) in communications.

What is the difference between bit rate and bandwidth?

What does Amplitude Modulation (AM) vary with the carrier?

What is 16-QAM an example of?

Which modulation uses shifts in carrier frequency to encode data?

What does ASK stand for in modulation schemes?