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ICS 620 – Exam 1
Models, Basic Electricity
26
Other
Graduate
10/11/2009

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Cards

Term
The voltage provided by the Central Office to the telephone network is:
Definition
-48 V DC
Term
What is the scientific notation “M” mean for the throughput in the equation: 1.5Mbps?
Definition
1.5 megabits per second or 1.5 x 10^6
Term
Given a circuit with 220V and 4 Ohms resistance, what would the Power (Watts) associated with this circuit?
Definition
12.1 kW
Current x Voltage = Power
Term
Given a 220V circuit with a 100 Ohms resistance, what would be the current associated with this circuit?
Definition
2.2 Amps
Resistance x Current = Voltage
Term
What is a resonant circuit?
Definition
A circuit wherein the components are optimized at a specific frequency to work together optimally
Term
According to the von Neumann model, a hard drive is:
Definition
An input/output device
Term
What is an “open circuit”?
Definition
An open circuit is defined by a break in the electrical connectivity of the circuit
Term
A range of frequency is called:
Definition
Bandwidth
Term
What device acts like a battery in a circuit?
Definition
Capacitor
Term
Why is it necessary to have a standard model in which to discuss networks or computers?
Definition
Complex systems are easier to understand from their fundamental platforms on which they are built.
Term
In what type of material would we find loosely attached electrons that are easily free from their orbit around the nucleus?
Definition
Conductors
Term
Which voltage is more efficient for work, AC or DC?
Definition
DC
Term
According to the Shannon Model, as noise increases, throughout will:
Definition
Decrease
Term
What device acts like a switch in a DC circuit?
Definition
Diode
Term
Exa - E
Peta - P
Tera - T
Giga - G
Mega - M
Kilo - k
Hecto - h
Deka - da
Definition
Exa – E – 10^18
Peta – P – 10^15
Tera – T – 10^12
Giga – G – 10^9
Mega – M – 10^6
kilo – k – 10^3
hecto – h – 10^2
deka – da – 10
Term
What is another term for “cycles per second”?
Definition
Hertz
Term
Why is it important to have an understanding of basic electricity?
Definition
It is critical to the understanding of how signal processing occurs across voice, data and video networks.
Term
A signal is considered to be attenuating when:
Definition
It is losing intensity over time.
Term
What are the five components of von Neumann’s model?
Definition
Memory, bus, I/O, operating system, processor
Term
What does the transport layer know about the process that has occurred at the physical layer?
Definition
Nothing
Term
Which law of electricity loses its predictive capability when temperature varies to extremes?
Definition
Ohm's Law
Term
Why would it be important to understand the Power demands of a device?
Definition
Power is used to define heat output, which can cause variability in circuit performance.
Term
A full wave rectifier is used for what purpose in an electrical circuit?
Definition
To convert AC to DC
Term
Define Channel capacity
Definition
Under given conditions, the maximum rate at which data can be transmitted over a given communication path or channel
Term
Can the resistive value of an element (e.g. Copper) change? Why?
Definition
Yes, temperature can cause variable in resistance
Term
Deci - d
Centi - c
Milli - m
Micro - µ
Nano - n
Pico - p
Femto - f
Atto - a
Definition
deci – d – 10^-1
centi – c – 10^-2
milli – m – 10^-3
micro – µ – 10^-6
nano – n – 10^-9
pico – p – 10^-12
femto – f – 10^-15
atto – a – 10^-18
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