BICSI TECHNICIAN NETCOM CHAPTER 1 QUESTIONS AND ANSWERS RATED A+.
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BICSI Technician
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BICSI Technician
BICSI TECHNICIAN NETCOM CHAPTER 1 QUESTIONS AND ANSWERS RATED A+.
Three transmission methods are - correct answer. Symplex, half duplex, full duplex
The choice of a specific transport medium is influenced by 5 economics and technical considerations such as the: - correct answer. ...
BICSI TECHNICIAN NETCOM CHAPTER 1
QUESTIONS AND ANSWERS RATED A+.
Three transmission methods are - correct answer. Symplex, half duplex, full duplex
The choice of a specific transport medium is influenced by 5 economics and technical
considerations such as the: - correct answer. Physical construction, type of services,
topology and size of the network, transmission path distance, transmission performance
characteristics of the cabling.
Twisted pair cable is called balanced cable because: - correct answer. The physical
construction of both conductors and the associated connections transmit information
electrically at the same potential referenced to ground.
Coaxial cable is unbalanced because: - correct answer. The two conductors in the
associated connections transmit information electrically at different potentials
referenced to ground.
__________ current has a rapid increase and decrease of the voltage that cannot be
perceived by the eye. - correct answer. Alternating or AC
__________ refers to a steady value that does not change the polarity of the voltage for
the direction of the current. - correct answer. Direct current or DC
A battery is an example of a _____ source. - correct answer. Direct current or DC
EM I can be __________ or __________ to the cable - correct answer. External or
internal
AXT - correct answer. Alien crosstalk
What is alien crosstalk? - correct answer. Other cables, external to the cable, that
cause electromagnetic interference.
Five examples of external EMI - correct answer. Other cables, motors, fluorescent
lighting, switching power supplies, powered radio equipment and antennas
, Crosstalk definition - correct answer. Electromagnetic interference, internal to the
cable , that comes from another pair within the sheath
Two examples of internal electromagnetic interference - correct answer. Cross talk or
coming from the cables shield, screen, or other metallic component that is improperly
bonded and grounded
Net current fields we can directly with __________ - correct answer. Distance
High-current fields weekend with - correct answer. the cube of the distance (fast)
Shielding is ineffective for __________ but is effective for __________ - correct answer.
Net current fields, high-current fields
Frequency defined - correct answer. The number of cycles a signal is repeated in a
given time period.
1 cycle in 1 s = ___ Hz - correct answer. 1
60 cycles in 1 s = _____ Hz - correct answer. 60
1000 cycles in 1 s = _______________ - correct answer. 1 kilohertz (kHz)
1 million cycles in 1 s = _____________ - correct answer. 1 megahertz (MHz)
1 billion cycles in 1 s = ___________ - correct answer. 1 gigahertz (GHz)
1 trillion cycles in 1 s = __________ - correct answer. 1 terahertz (THz)
Humans can hear frequencies that range from _____ hertz to _____ hertz - correct
answer. 20 Hz to 20,000 Hz
Voice-grade transmission of speech is generally limited to between _____ hertz and
_____ hertz - correct answer. 300 Hz and 3400 Hz
Electrical power measured in watts has two variations known as - correct answer.
Apparent (or reactive) power and true (or real) power
When measured in conjunction with a time element such as seconds or hours electrical
power applies to — - correct answer. The energy consumed by an electrical device
(such as a motor, amplifier, or telephone transmitter) over a period of time
The energy consumed by an electrical device such as a motor, amplifier, or telephone
transmitter over a period of time is typically measured in __________ - correct answer.
Kilowatt hours (kWh)
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