Digital Communications Quiz

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Medium level questions

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Basmala Soliman

Libya

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Froggy Jumps Digital Communications QuizOnline version Medium level questions by Basmala Soliman 1 What is the primary purpose of modulation in digital comms? a To compress data for efficient storage b To convert analog signals to digital form only during reception c To map a digital signal onto a carrier for transmission 2 Which term defines the maximum data rate of a channel with a given bandwidth and SNR? a Shannon limit b Bode limit c Nyquist rate 3 Which modulation technique uses two carrier frequencies to represent bits? a Phase Modulation (PM) b Frequency Shift Keying (FSK) c Amplitude Modulation (AM) 4 In digital comms, what does BER measure? a Burst Error Rate b Bandwidth Efficiency Ratio c Bit Error Rate 5 Which layer is primarily responsible for logical addressing and routing in networks? a Data Link layer (Layer 2) b Physical layer (Layer 1) c Network layer (Layer 3) 6 What kind of channel coding adds redundancy to detect/correct errors? a Source coding b Error detection/correction codes c Compression codes 7 What is multiplexing used for in communications? a Encrypting data for security b Sharing a medium among multiple signals c Compressing multiple streams into one 8 Which protocol model has seven layers including Application, Transport, and Network? a OSI model b TCP/IP model c PPP model 9 Which medium access method allows nodes to transmit whenever the channel is free in Ethernet? a Frequency Division Multiplexing (FDM) b Time Division Multiplexing (TDM) c Carrier Sense Multiple Access (CSMA) 10 What is latency in digital communications? a Error probability per bit b Delay from source to destination c Rate of data generation

Froggy Jumps

Digital Communications QuizOnline version

Medium level questions

by Basmala Soliman

What is the primary purpose of modulation in digital comms?

To compress data for efficient storage

To convert analog signals to digital form only during reception

To map a digital signal onto a carrier for transmission

Which term defines the maximum data rate of a channel with a given bandwidth and SNR?

Shannon limit

Bode limit

Nyquist rate

Which modulation technique uses two carrier frequencies to represent bits?

Phase Modulation (PM)

Frequency Shift Keying (FSK)

Amplitude Modulation (AM)

In digital comms, what does BER measure?

Burst Error Rate

Bandwidth Efficiency Ratio

Bit Error Rate

Which layer is primarily responsible for logical addressing and routing in networks?

Data Link layer (Layer 2)

Physical layer (Layer 1)

Network layer (Layer 3)

What kind of channel coding adds redundancy to detect/correct errors?

Source coding

Error detection/correction codes

Compression codes

What is multiplexing used for in communications?

Encrypting data for security

Sharing a medium among multiple signals

Compressing multiple streams into one

Which protocol model has seven layers including Application, Transport, and Network?

OSI model

TCP/IP model

PPP model

Which medium access method allows nodes to transmit whenever the channel is free in Ethernet?

Frequency Division Multiplexing (FDM)

Time Division Multiplexing (TDM)

Carrier Sense Multiple Access (CSMA)

What is latency in digital communications?

Error probability per bit

Delay from source to destination

Rate of data generation

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Digital Communications Quiz

Froggy Jumps

About this activity

Created by

Download the paper version to play

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Digital Communications QuizOnline version

by Basmala Soliman

What is the primary purpose of modulation in digital comms?

Which term defines the maximum data rate of a channel with a given bandwidth and SNR?

Which modulation technique uses two carrier frequencies to represent bits?

In digital comms, what does BER measure?

Which layer is primarily responsible for logical addressing and routing in networks?

What kind of channel coding adds redundancy to detect/correct errors?

What is multiplexing used for in communications?

Which protocol model has seven layers including Application, Transport, and Network?

Which medium access method allows nodes to transmit whenever the channel is free in Ethernet?

What is latency in digital communications?

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