120 Questions
Information transfer is a ______ process
physical
In this class, we generally care about electrical signals (on a ______)
wire
In this class, we generally care about optical signals (in a ______)
fiber
Information carriers can also be sound ______
waves
Information carriers can also be ______ states
quantum
Information carriers can also be ______ & paper, etc.
ink
Amplitude Modulation (AM) changes the ______ of the signal.
strength
Modulation is the process of changing a signal to convey ______.
information
Frequency Modulation (FM) changes the ______ of the signal.
frequency
Phase Modulation (PM) changes the ______ of the signal.
phase
Baseband modulation sends the ______ signal.
bare
Carrier modulation uses the signal to modulate a higher frequency signal (carrier) and can be viewed as the ______ of the two signals.
product
Aggressive encoding techniques make the signal less sensitive to ______
noise
Bandwidth and distance of networks is limited by the physical properties of the ______
media
Nyquist gives a rough idea of ______ throughput
idealized
Low bandwidth channels require ______ encoding
sophisticated
High bandwidth channels require ______ encoding
simpler
Shannon's formula for channel capacity: C = B x log2(1 + S/N)
C = B x log_2(1 + S/N)
The Nyquist Limit assumes binary ______ encoding
amplitude
A noiseless channel of width H can at most transmit a binary signal at a rate 2 x ______
H
Instead of 0/1, use lots of different ______ to get past the Nyquist Limit
values
Every transmission medium supports transmission in a certain fixed ______ range
frequency
Shannon's theorem: C = B x log2(1 + S/N), where C is maximum capacity (bps), B is channel bandwidth (Hz), and S/N is signal to noise ______ of the channel
ratio
Noise, attenuation, and dispersion limit the ______ that a channel can sustain
data rate
Frequency versus Time-division Multiplexing: With TDM different users send at different times. I.e. each user can send at full speed some of the time. Example: ______.
time-share condo
Copper Wire: Unshielded twisted pair (UTP). Two copper wires twisted - avoid antenna effect. Grouped into cables: multiple pairs with common sheath. Category 3 (voice grade) versus category 5. 100 Mbit/s up to 100 m, 1 Mbit/s up to a few km. Cost: ~ 10cents/foot. ______.
Coax cables
UTP: Why twist wires. ______.
Provide noise immunity
Fiber Types: Multimode fiber. 62.5 or 50 micron core carries multiple 'modes'. Used at 1.3 microns, usually LED source. Subject to mode dispersion: different propagation modes travel at different speeds. Typical limit: 1 Gbps at 100m. ______.
Single mode
Gigabit Ethernet: Physical Layer Comparison. Medium. Transmit/ receive Distance. Comment. Copper. Twisted pair. 1000BASE-CX. 1000BASE-T. 25 m. 100 m machine room use four twisted pairs, IEEE 802.3ab. MM fiber. 62 mm. 1000BASE-SX. 1000BASE-LX. 260 m. 500 m. MM fiber. 50 mm. 1000BASE-SX. 1000BASE-LX. 525 m. 550 m. SM fiber. 1000BASE-LX. 5000 m. Twisted pair. 100BASE-T. 100 m. MM fiber. 100BASE-SX. 2000m. ______.
Twisted pair 1000BASE-T 100 m
Wireless Technologies: Great technology: no wires to install, convenient mobility, ... High attenuation limits distances. Wave propagates out as a sphere Huh. 2 in free space, typically 2 to 6. Signal strength attenuates quickly → 1/d3. High noise due to interference from other ______.
transmitters
Amplitude Modulation (AM) changes the ______ of the signal.
strength
Frequency Modulation (FM) changes the ______ of the signal.
frequency
Phase Modulation (PM) changes the ______ of the signal.
phase
Baseband modulation sends the ______ signal.
bare
Carrier modulation uses the signal to modulate a higher frequency signal (carrier) and can be viewed as the ______ of the two signals.
product
A noiseless channel of width H can at most transmit a binary signal at a rate 2 x ______.
H
Shannon's theorem: C = B x log2(1 + S/N), where C is maximum capacity (bps), B is channel bandwidth (Hz), and S/N is signal to noise ______ of the channel
ratio
Frequency Modulation (FM) changes the ______ of the signal.
frequency
Every transmission medium supports transmission in a certain fixed ______ range
frequency
Amplitude Modulation (AM) changes the ______ of the signal.
amplitude
High bandwidth channels require ______ encoding
aggressive
Instead of 0/1, use lots of different ______ to get past the Nyquist Limit
values
Shannon's formula for channel capacity: C = B x log2(1 + S/N), where C is maximum capacity (bps), B is channel bandwidth (Hz), and S/N is signal to noise ______ of the channel
ratio
Aggressive encoding techniques make the signal less sensitive to ______
noise
The Nyquist Limit assumes binary ______ encoding
pulse
Nyquist gives a rough idea of ______ throughput
idealized
Every transmission medium supports transmission in a certain fixed ______ range
frequency
Information carriers can also be ______ & paper, etc.
pen
Wireless Technologies: Great technology: no wires to install, convenient mobility, ... High attenuation limits distances. Wave propagates out as a sphere Huh. $2$ in free space, typically $2$ to $6$. Signal strength attenuates quickly → $1/d^3$. High noise due to interference from other ______.
devices
In this class, we generally care about electrical signals (on a ______).
wire
Fiber Types: Multimode fiber. $62.5$ or $50$ micron core carries multiple 'modes'. Used at $1.3$ microns, usually LED source. Subject to mode dispersion: different propagation modes travel at different speeds. Typical limit: $1$ Gbps at $100$m. ______.
Multimode fiber
Copper Wire: Unshielded twisted pair (UTP). Two copper wires twisted - avoid antenna effect. Grouped into cables: multiple pairs with common sheath. Category $3$ (voice grade) versus category $5$. $100$ Mbit/s up to $100$ m, $1$ Mbit/s up to a few km. Cost: ~ $10$cents/foot. ______.
Unshielded twisted pair (UTP)
Gigabit Ethernet: Physical Layer Comparison. Medium. Transmit/ receive Distance. Comment. Copper. Twisted pair. $1000$BASE-CX. $1000$BASE-T. $25$ m. $100$ m machine room use four twisted pairs, IEEE $802.3ab$. MM fiber. $62$ mm. $1000$BASE-SX. $1000$BASE-LX. $260$ m. $500$ m. MM fiber. $50$ mm. $1000$BASE-SX. $1000$BASE-LX. $525$ m. $550$ m. SM fiber. $1000$BASE-LX. $5000$ m. Twisted pair. $100$BASE-T. $100$ m. MM fiber. $100$BASE-SX. $2000$m. ______.
SM fiber
Frequency versus Time-division Multiplexing: With TDM different users send at different times. I.e. each user can send at full speed some of the time. Example: ______.
cellular networks
Frequency versus Time-division Multiplexing: With TDM different users send at different times. I.e. each user can send at full speed some of the time. Example: ______.
time-share condo
Gigabit Ethernet: Physical Layer Comparison. Medium. Transmit/ receive Distance. Comment. Copper. Twisted pair. 1000BASE-CX. 1000BASE-T. 25 m. 100 m machine room use four twisted pairs, IEEE 802.3ab. MM fiber. 62 mm. 1000BASE-SX. 1000BASE-LX. 260 m. 500 m. MM fiber. 50 mm. 1000BASE-SX. 1000BASE-LX. 525 m. 550 m. SM fiber. 1000BASE-LX. 5000 m. Twisted pair. 100BASE-T. 100 m. MM fiber. 100BASE-SX. 2000m. ______.
100BASE-SX
Wireless Technologies: Great technology: no wires to install, convenient mobility, ... High attenuation limits distances. Wave propagates out as a sphere Huh. 2 in free space, typically 2 to 6. Signal strength attenuates quickly → 1/d3. High noise due to interference from other ______.
transmitters
Copper Wire: Unshielded twisted pair (UTP). Two copper wires twisted - avoid antenna effect. Grouped into cables: multiple pairs with common sheath. Category 3 (voice grade) versus category 5. 100 Mbit/s up to 100 m, 1 Mbit/s up to a few km. Cost: ~ 10cents/foot. ______.
Coax cables
Fiber Types: Multimode fiber. 62.5 or 50 micron core carries multiple 'modes'. Used at 1.3 microns, usually LED source. Subject to mode dispersion: different propagation modes travel at different speeds. Typical limit: 1 Gbps at 100m. ______.
Single mode
UTP: Why twist wires. ______.
Provide noise immunity
Modulation is the process of changing a signal to convey ______.
information
Frequency Modulation (FM) changes the ______ of the signal.
frequency
Amplitude Modulation (AM) changes the ______ of the signal.
strength
Phase Modulation (PM) changes the ______ of the signal.
phase
Carrier modulation uses the signal to modulate a higher frequency signal (carrier) and can be viewed as the ______ of the two signals.
product
A noiseless channel of width H can at most transmit a binary signal at a rate 2 x ______.
H
Shannon's theorem: C = B x log2(1 + S/N), where C is maximum capacity (bps), B is channel bandwidth (Hz), and S/N is signal to noise ______ of the channel
ratio
Every transmission medium supports transmission in a certain fixed ______ range
frequency
Instead of 0/1, use lots of different ______ to get past the Nyquist Limit
values
Shannon's formula for channel capacity: ______
C = B x log2(1 + S/N)
Frequency versus Time-division Multiplexing: With TDM different users send at different times. I.e. each user can send at full speed some of the time. Example: ______.
multiplexing
High bandwidth channels require ______ encoding
aggressive
Bandwidth and distance of networks is limited by the physical properties of the ______
media
Shannon's formula for channel capacity: C = B x log2(1 + S/N), where C is maximum capacity (bps), B is channel bandwidth (Hz), and S/N is signal to noise ______ of the channel
ratio
Aggressive encoding techniques make the signal less sensitive to ______
noise
Copper Wire: Unshielded twisted pair (UTP). Two copper wires twisted - avoid antenna effect. Grouped into cables: multiple pairs with common sheath. Category 3 (voice grade) versus category 5. 100 Mbit/s up to 100 m, 1 Mbit/s up to a few km. Cost: ~ 10 cents/foot. ______.
UTP
Frequency versus Time-division Multiplexing: With TDM different users send at different times. I.e. each user can send at full speed some of the time. Example: ______.
FDMA
Wireless Technologies: Great technology: no wires to install, convenient mobility, ... High attenuation limits distances. Wave propagates out as a sphere Huh. 2 in free space, typically 2 to 6. Signal strength attenuates quickly → 1/d3. High noise due to interference from other ______.
sources
Frequency versus Time-division Multiplexing: With TDM different users send at different times. I.e. each user can send at full speed some of the time. Example: ______.
time-share condo
Fiber Types: Multimode fiber. 62.5 or 50 micron core carries multiple 'modes'. Used at 1.3 microns, usually LED source. Subject to mode dispersion: different propagation modes travel at different speeds. Typical limit: 1 Gbps at 100m. ______.
Single mode
UTP: Why twist wires. ______.
Provide noise immunity
Copper Wire: Unshielded twisted pair (UTP). Two copper wires twisted - avoid antenna effect. Grouped into cables: multiple pairs with common sheath. Category 3 (voice grade) versus category 5. 100 Mbit/s up to 100 m, 1 Mbit/s up to a few km. Cost: ~ 10cents/foot. ______.
Coax cables
Wireless Technologies: Great technology: no wires to install, convenient mobility, ... High attenuation limits distances. Wave propagates out as a sphere Huh. 2 in free space, typically 2 to 6. Signal strength attenuates quickly → 1/d3. High noise due to interference from other ______.
transmitters
Gigabit Ethernet: Physical Layer Comparison. Medium. Transmit/ receive Distance. Comment. Copper. Twisted pair. 1000BASE-CX. 1000BASE-T. 25 m. 100 m machine room use four twisted pairs, IEEE 802.3ab. MM fiber. 62 mm. 1000BASE-SX. 1000BASE-LX. 260 m. 500 m. MM fiber. 50 mm. 1000BASE-SX. 1000BASE-LX. 525 m. 550 m. SM fiber. 1000BASE-LX. 5000 m. Twisted pair. 100BASE-T. 100 m. MM fiber. 100BASE-SX. 2000m. ______.
1000BASE-LX
Wireless Technologies: Great technology: no wires to install, convenient mobility, ... High attenuation limits distances. Wave propagates out as a sphere Huh. $2$ in free space, typically $2$ to $6$. Signal strength attenuates quickly → $1/d^3$. High noise due to interference from other ______.
devices
Phase Modulation (PM) changes the ______ of the signal.
phase
Fiber Types: Multimode fiber. $62.5$ or $50$ micron core carries multiple 'modes'. Used at $1.3$ microns, usually LED source. Subject to mode dispersion: different propagation modes travel at different speeds. Typical limit: $1$ Gbps at $100$m. ______.
multimode
Every transmission medium supports transmission in a certain fixed ______ range.
frequency
Modulation is the process of changing a signal to convey ______.
information
In this class, we generally care about electrical signals (on a ______).
wire
Aggressive encoding techniques make the signal less sensitive to ______
noise
Every transmission medium supports transmission in a certain fixed ______ range
frequency
Nyquist gives a rough idea of ______ throughput
idealized
Every transmission medium supports transmission in a certain fixed ______ range
bandwidth
Amplitude Modulation (AM) changes the ______ of the signal
amplitude
Carrier modulation uses the signal to modulate a higher frequency signal (carrier) and can be viewed as the ______ of the two signals
multiplication
Information transfer is a physical process. In this class, we generally care about ______ signals (on a wire)
Electrical
Information carriers can also be ______ waves
EM
Physical layer. Datalink layer introduction, framing, error coding, switched networks. Broadcast-networks, home networking. F'11 Application Presentation Session Transport Network ______ Physical
Datalink
Bandwidth and distance of networks is limited by the physical properties of the ______
Transmission medium
Wireless Technologies: Great technology: no wires to install, convenient mobility, ... High attenuation limits distances. Wave propagates out as a sphere Huh. 2 in free space, typically 2 to 6. Signal strength attenuates quickly → 1/d^3. High noise due to interference from other ______
Sources
The Nyquist Limit assumes binary ______ encoding
Pulse
Shannon's theorem: C = B x log2(1 + S/N), where C is maximum capacity (bps), B is channel bandwidth (Hz), and S/N is signal to noise ______ of the channel
ratio
Fiber Types: Multimode fiber. 62.5 or 50 micron core carries multiple 'modes'. Used at 1.3 microns, usually LED source. Subject to mode dispersion: different propagation modes travel at different speeds. Typical limit: 1 Gbps at 100m. ______.
MM fiber
A noiseless channel of width H can at most transmit a binary signal at a rate 2 x ______.
H
High bandwidth channels require ______ encoding
aggressive
Every transmission medium supports transmission in a certain fixed ______ range.
frequency
Instead of 0/1, use lots of different ______ to get past the Nyquist Limit
values
Frequency Modulation (FM) changes the ______ of the signal.
frequency
Amplitude Modulation (AM) changes the ______ of the signal.
strength
Phase Modulation (PM) changes the ______ of the signal.
phase
Baseband modulation sends the ______ signal.
bare
Carrier modulation uses the signal to modulate a higher frequency signal (carrier) and can be viewed as the ______ of the two signals.
product
Every transmission medium supports transmission in a certain fixed ______ range.
frequency
Frequency versus Time-division Multiplexing: With TDM different users send at different times. I.e. each user can send at full speed some of the time. Example: ______.
time-share condo
Copper Wire: Unshielded twisted pair (UTP). Two copper wires twisted - avoid antenna effect. Grouped into cables: multiple pairs with common sheath. Category 3 (voice grade) versus category 5. 100 Mbit/s up to 100 m, 1 Mbit/s up to a few km. Cost: ~ 10cents/foot. ______.
Coax cables
Wireless Technologies: Great technology: no wires to install, convenient mobility, ... High attenuation limits distances. Wave propagates out as a sphere Huh. 2 in free space, typically 2 to 6. Signal strength attenuates quickly → 1/d3. High noise due to interference from other ______.
transmitters
Fiber Types: Multimode fiber. 62.5 or 50 micron core carries multiple 'modes'. Used at 1.3 microns, usually LED source. Subject to mode dispersion: different propagation modes travel at different speeds. Typical limit: 1 Gbps at 100m. ______.
Single mode
Carrier modulation uses the signal to modulate a higher frequency signal (carrier) and can be viewed as the ______ of the two signals.
product
Modulation is the process of changing a signal to convey ______.
information
Quiz: The Nyquist Limit in Binary Amplitude Encoding Test your knowledge about the Nyquist limit and binary amplitude encoding with this quiz. Learn about the maximum data transmission rate in a noiseless channel and how to calculate it using the Nyquist formula. Discover the relationship between channel width and data transmission speed. Challenge yourself and see how well you understand this important concept in communication systems.
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