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BICSI Technician- Netcom - Chapter 1 Questions with Correct Answers
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BICSI Technician- Netcom - Chapter 1 Questions with Correct Answers
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BICSI Technician- Netcom - Chapter 1 Questions withCorrect Answers
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
EMI Correct Answer-Electromagnetic interference
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)
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