Test Your Understanding of the Nyquist Limit and Binary Amplitude Encoding
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Questions and Answers

Which layer of the OSI model is responsible for framing and error coding?

  • Datalink Layer (correct)
  • Session Layer
  • Application Layer
  • Presentation Layer

    • What are the two types of signals that are generally cared about in the class?

  • Optical signals and quantum states
  • Electrical signals and sound waves (correct)
  • EM waves and proteins
  • Ink & paper and electrical signals

    • Which layer of the OSI model is responsible for transferring information as physical signals?

  • Transport Layer
  • Physical Layer (correct)
  • Network Layer
  • Application Layer

    • What are the information carriers mentioned in the text?

    <p>Ink &amp; paper and optical signals</p> Signup and view all the answers

    Which layer of the OSI model is responsible for performance and reliability of the network?

    <p>Transport Layer</p> Signup and view all the answers

    Which layer of the OSI model is responsible for protocols like FTP and HTTP?

    <p>Application Layer</p> Signup and view all the answers

    Which of the following techniques is used to make a signal less sensitive to noise?

    <p>Aggressive encoding</p> Signup and view all the answers

    What determines the properties of a network?

    <p>Transmission medium and hardware</p> Signup and view all the answers

    Which formula is used to calculate the idealized throughput?

    <p>Nyquist formula</p> Signup and view all the answers

    Which type of encoding is used for low bandwidth channels?

    <p>Sophisticated encoding</p> Signup and view all the answers

    Which formula is used to calculate the capacity of a channel?

    <p>Shannon formula</p> Signup and view all the answers

    How can multiple users be supported in a network?

    <p>All of the above</p> Signup and view all the answers

    Which type of fiber is typically used for Gigabit Ethernet over longer distances?

    <p>Single mode fiber</p> Signup and view all the answers

    Which technology allows for sending multiple wavelengths through the same fiber?

    <p>Wavelength Division Multiplexing</p> Signup and view all the answers

    Which type of cable is typically used for machine room use in Gigabit Ethernet?

    <p>UTP</p> Signup and view all the answers

    What is the typical limit for data transmission speed over multimode fiber at a distance of 100 meters?

    <p>1 Gbps</p> Signup and view all the answers

    What is the main advantage of using twisted wires in UTP cables?

    <p>Reduced noise interference</p> Signup and view all the answers

    What is the main disadvantage of wireless technologies compared to wired technologies?

    <p>High attenuation</p> Signup and view all the answers

    Which type of modulation involves changing the phase of the signal?

    <p>Phase Modulation (PM)</p> Signup and view all the answers

    What is the maximum rate at which a noiseless channel of width H can transmit a binary signal?

    <p>2H</p> Signup and view all the answers

    Which modulation method uses high voltage for a 1 and low voltage for a 0?

    <p>Amplitude Modulation (AM)</p> Signup and view all the answers

    What does the term 'bandwidth' refer to in the context of signals?

    <p>The width of the frequency range in which the signal is nonzero</p> Signup and view all the answers

    Why do we use different modulation methods?

    <p>To accommodate different media, noise immunity, and range</p> Signup and view all the answers

    What are some factors we consider when caring about physical layer in networking?

    <p>Cost, bandwidth, physical size of the network</p> Signup and view all the answers

    According to Shannon's theorem, what is the maximum capacity (C) of a noisy channel with a channel bandwidth (B) of 3200 Hz and a signal to noise ratio (S/N) of 1000?

    <p>3200 x log2(1 + 1000)</p> Signup and view all the answers

    What is the Nyquist Limit for a noiseless channel with a width (H) of 3000 Hz?

    <p>2 x H</p> Signup and view all the answers

    What is the upper limit on capacity for a noisy channel with a channel bandwidth (B) of 3200 Hz and a signal to noise ratio (S/N) of 1000?

    <p>B x log2(1 + S/N)</p> Signup and view all the answers

    What is the maximum capacity (C) of a noisy channel with a channel bandwidth (B) of 5000 Hz and a signal to noise ratio (S/N) of 100?

    <p>B x log2(1 + S/N)</p> Signup and view all the answers

    What is the maximum capacity (C) of a noisy channel with a channel bandwidth (B) of 10000 Hz and a signal to noise ratio (S/N) of 1000?

    <p>B x log2(1 + S/N)</p> Signup and view all the answers

    What is the maximum capacity (C) of a noisy channel with a channel bandwidth (B) of 2000 Hz and a signal to noise ratio (S/N) of 500?

    <p>B x log2(1 + S/N)</p> Signup and view all the answers

    Which type of fiber is typically used for Gigabit Ethernet over longer distances?

    <p>Single mode fiber</p> Signup and view all the answers

    Which layer of the OSI model is responsible for framing and error coding?

    <p>Data link layer</p> Signup and view all the answers

    Which modulation method uses high voltage for a 1 and low voltage for a 0?

    <p>Amplitude modulation</p> Signup and view all the answers

    What is the maximum capacity (C) of a noisy channel with a channel bandwidth (B) of 2000 Hz and a signal to noise ratio (S/N) of 500?

    <p>4000 bps</p> Signup and view all the answers

    What is the maximum rate at which a noiseless channel of width H can transmit a binary signal?

    <p>2H bps</p> Signup and view all the answers

    What are the two types of signals that are generally cared about in the class?

    <p>Analog and digital signals</p> Signup and view all the answers

    Which layer of the OSI model is responsible for framing and error coding?

    <p>Datalink Layer</p> Signup and view all the answers

    What is the maximum rate at which a noiseless channel of width $H$ can transmit a binary signal?

    <p>$2H$ bits per second</p> Signup and view all the answers

    Which modulation method uses high voltage for a 1 and low voltage for a 0?

    <p>Amplitude Modulation</p> Signup and view all the answers

    What is the main disadvantage of wireless technologies compared to wired technologies?

    <p>Slower data transfer speed</p> Signup and view all the answers

    Which formula is used to calculate the capacity of a channel?

    <p>Shannon's formula</p> Signup and view all the answers

    Which of the following techniques is used to make a signal less sensitive to noise?

    <p>Error coding</p> Signup and view all the answers

    Which technique is used to make a signal less sensitive to noise?

    <p>Aggressive encoding</p> Signup and view all the answers

    What is the formula used to calculate the maximum capacity (C) of a noisy channel with a channel bandwidth (B) of 3200 Hz and a signal to noise ratio (S/N) of 1000?

    <p>C = B x log2(1 + S/N)</p> Signup and view all the answers

    Which division multiplexing technique can be used to support multiple users in a network?

    <p>All of the above</p> Signup and view all the answers

    What are the properties of different transmission media mentioned in the text?

    <p>Copper, optical, wireless</p> Signup and view all the answers

    What is the formula used to calculate the idealized throughput according to Nyquist?

    <p>Throughput = B x log2(1 + S/N)</p> Signup and view all the answers

    What are the effects mentioned in the text that can impact network performance?

    <p>Attenuation, noise, dispersion</p> Signup and view all the answers

    Which of the following is a limitation of the Nyquist Limit?

    <p>The Nyquist Limit can only transmit at a rate of 2 x H.</p> Signup and view all the answers

    What is Shannon's theorem used for?

    <p>Calculating the maximum capacity of a channel.</p> Signup and view all the answers

    Which factor limits the data rate that a channel can sustain?

    <p>All of the above</p> Signup and view all the answers

    What does the term 'multiplexing' refer to?

    <p>Using different time slots for different users.</p> Signup and view all the answers

    What is the maximum capacity (C) of a noisy channel with a channel bandwidth (B) of 5000 Hz and a signal to noise ratio (S/N) of 100?

    <p>10000 bps</p> Signup and view all the answers

    What are the three dimensions in which multiple channels can coexist?

    <p>Frequency, space, time</p> Signup and view all the answers

    Which modulation method involves changing the strength of the signal?

    <p>Amplitude Modulation (AM)</p> Signup and view all the answers

    What is the maximum capacity (C) of a noisy channel with a channel bandwidth (B) of 5000 Hz and a signal to noise ratio (S/N) of 100?

    <p>10000 bits per second</p> Signup and view all the answers

    What is the maximum capacity (C) of a noisy channel with a channel bandwidth (B) of 2000 Hz and a signal to noise ratio (S/N) of 500?

    <p>16000 bits per second</p> Signup and view all the answers

    What is the maximum capacity (C) of a noisy channel with a channel bandwidth (B) of 3200 Hz and a signal to noise ratio (S/N) of 1000?

    <p>12800 bits per second</p> Signup and view all the answers

    What is the Nyquist Limit for a noiseless channel with a width (H) of 3000 Hz?

    <p>6000 Hz</p> Signup and view all the answers

    What is the maximum rate at which a noiseless channel of width H can transmit a binary signal?

    <p>2H bits per second</p> Signup and view all the answers

    Which layer of the OSI model is responsible for transferring information as physical signals?

    <p>Physical layer</p> Signup and view all the answers

    What are the two types of signals that are generally cared about in the class?

    <p>Electrical and optical signals</p> Signup and view all the answers

    What is the main advantage of using twisted wires in UTP cables?

    <p>Reduced crosstalk</p> Signup and view all the answers

    What determines the properties of a network?

    <p>Physical layer</p> Signup and view all the answers

    What is the maximum rate at which a noiseless channel of width $H$ can transmit a binary signal?

    <p>$2H$ bits per second</p> Signup and view all the answers

    Which modulation method involves changing the phase of the signal?

    <p>Phase modulation</p> Signup and view all the answers

    Which type of fiber is typically used for Gigabit Ethernet over longer distances?

    <p>Single mode fiber</p> Signup and view all the answers

    Which of the following is a limitation of the Nyquist Limit?

    <p>It only applies to noiseless channels</p> Signup and view all the answers

    What is the maximum rate at which a noiseless channel of width H can transmit a binary signal?

    <p>2H bps</p> Signup and view all the answers

    What is the formula used to calculate the capacity of a channel?

    <p>C = B * log2(1 + S/N)</p> Signup and view all the answers

    What are the properties of different transmission media mentioned in the text?

    <p>Attenuation, distortion, and noise</p> Signup and view all the answers

    What is the main disadvantage of wireless technologies compared to wired technologies?

    <p>High noise due to interference from other transmitters</p> Signup and view all the answers

    Which of the following is a modulation method that changes the phase of the signal?

    <p>Phase Modulation (PM)</p> Signup and view all the answers

    What is the formula used to calculate the maximum capacity (C) of a noisy channel with a channel bandwidth (B) of 3200 Hz and a signal to noise ratio (S/N) of 1000?

    <p>C = B * log2(1 + S/N)</p> Signup and view all the answers

    Which of the following is a limitation of the Nyquist Limit?

    <p>It is only applicable to noiseless channels</p> Signup and view all the answers

    What is the typical limit for data transmission speed over multimode fiber at a distance of 100 meters?

    <p>1 Gbps</p> Signup and view all the answers

    What is Shannon's theorem used for?

    <p>Calculating the maximum capacity of a noisy channel</p> Signup and view all the answers

    Why do we use different modulation methods?

    <p>To increase noise immunity</p> Signup and view all the answers

    Which statement best describes the Nyquist Limit?

    <p>A noiseless channel of width H can transmit a binary signal at a rate of 2 x H.</p> Signup and view all the answers

    What is the formula used to calculate the maximum capacity (C) of a noisy channel?

    <p>C = B x log2(1 + S/N)</p> Signup and view all the answers

    What is the maximum capacity (C) of a noisy channel with a channel bandwidth (B) of 3200 Hz and a signal to noise ratio (S/N) of 1000?

    <p>31.895 kbits/s</p> Signup and view all the answers

    Which modulation method involves changing the phase of the signal?

    <p>Phase modulation</p> Signup and view all the answers

    What are the three dimensions in which multiple channels can coexist?

    <p>Frequency, space, time</p> Signup and view all the answers

    What is the main advantage of using twisted wires in UTP cables?

    <p>Reduced crosstalk</p> Signup and view all the answers

    Which formula is used to calculate the capacity of a channel?

    <p>Shannon formula: C = B x log2(1 + S/N)</p> Signup and view all the answers

    What are some factors we consider when caring about physical layer in networking?

    <p>All of the above</p> Signup and view all the answers

    What is Shannon's theorem used for?

    <p>Calculating the maximum capacity of a channel</p> Signup and view all the answers

    What are the effects mentioned in the text that can impact network performance?

    <p>Attenuation and noise</p> Signup and view all the answers

    What is the maximum rate at which a noiseless channel of width $H$ can transmit a binary signal?

    <p>$2H$</p> Signup and view all the answers

    Which type of modulation involves changing the phase of the signal?

    <p>Phase modulation (PM)</p> Signup and view all the answers

    Which modulation method involves changing the phase of the signal?

    <p>Phase Modulation (PM)</p> Signup and view all the answers

    Which layer of the OSI model is responsible for transferring information as physical signals?

    <p>Physical layer</p> Signup and view all the answers

    Which division multiplexing technique can be used to support multiple users in a network?

    <p>Time Division Multiplexing (TDM)</p> Signup and view all the answers

    What determines the properties of a network?

    <p>Physical layer</p> Signup and view all the answers

    Which type of cable is typically used for machine room use in Gigabit Ethernet?

    <p>Twisted Pair (UTP)</p> Signup and view all the answers

    Which modulation method uses high voltage for a 1 and low voltage for a 0?

    <p>Amplitude Modulation (AM)</p> Signup and view all the answers

    Which of the following is a technique used to make a signal less sensitive to noise?

    <p>aggressive encoding</p> Signup and view all the answers

    What is the formula used to calculate the idealized throughput according to Nyquist?

    <p>C = B x log2(1 + S/N)</p> Signup and view all the answers

    Which modulation method involves changing the phase of the signal?

    <p>Frequency modulation</p> Signup and view all the answers

    What is the maximum rate at which a noiseless channel of width $H$ can transmit a binary signal?

    <p>$2H$</p> Signup and view all the answers

    What is Shannon's theorem used for?

    <p>Calculating channel capacity</p> Signup and view all the answers

    Which factor limits the data rate that a channel can sustain?

    <p>Bandwidth</p> Signup and view all the answers

    Which of the following is a limitation of using twisted wires in UTP cables?

    <p>Limited distance</p> Signup and view all the answers

    What is the typical limit for data transmission speed over multimode fiber at a distance of 100 meters?

    <p>1 Gbps</p> Signup and view all the answers

    Which type of fiber is typically used for Gigabit Ethernet over longer distances?

    <p>Single mode</p> Signup and view all the answers

    What is the formula used to calculate the maximum capacity (C) of a noisy channel with a channel bandwidth (B) of 3200 Hz and a signal to noise ratio (S/N) of 1000?

    <p>C = B * log2(1 + S/N)</p> Signup and view all the answers

    What is the maximum rate at which a noiseless channel of width $H$ can transmit a binary signal?

    <p>2H</p> Signup and view all the answers

    Which layer of the OSI model is responsible for framing and error coding?

    <p>Data link layer</p> Signup and view all the answers

    Which layer of the OSI model is responsible for protocols like FTP and HTTP?

    <p>Transport layer</p> Signup and view all the answers

    According to Shannon's theorem, what is the maximum capacity (C) of a noisy channel with a channel bandwidth (B) of 3200 Hz and a signal to noise ratio (S/N) of 1000?

    <p>9600 bps</p> Signup and view all the answers

    What are the three dimensions in which multiple channels can coexist?

    <p>Time, frequency, and code</p> Signup and view all the answers

    What is the main advantage of using twisted wires in UTP cables?

    <p>Greater resistance to interference</p> Signup and view all the answers

    What is the maximum rate at which a noiseless channel of width $H$ can transmit a binary signal?

    <p>2H bps</p> Signup and view all the answers

    What is the maximum capacity (C) of a noisy channel with a channel bandwidth (B) of 5000 Hz and a signal to noise ratio (S/N) of 100?

    <p>10000 bps</p> Signup and view all the answers

    Which of the following is a limitation of the Nyquist Limit?

    <p>The Nyquist Limit cannot transmit data at a rate higher than the channel bandwidth.</p> Signup and view all the answers

    What is the maximum rate at which a noiseless channel of width $H$ can transmit a binary signal?

    <p>$2H$</p> Signup and view all the answers

    What is Shannon's theorem used for?

    <p>Calculating the maximum capacity of a noisy channel.</p> Signup and view all the answers

    What are the three dimensions in which multiple channels can coexist?

    <p>Frequency, space, time</p> Signup and view all the answers

    What is the maximum capacity (C) of a noisy channel with a channel bandwidth (B) of 3200 Hz and a signal to noise ratio (S/N) of 1000?

    <p>3200 x log2(1 + 1000)</p> Signup and view all the answers

    Which division multiplexing technique can be used to support multiple users in a network?

    <p>Time division multiplexing</p> Signup and view all the answers

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