1 Transmission

Question 1

Question

_____________ is demonstrated by the connectors ability to withstand hundreds of insertion and withdrawal cycles without failing. This is expressed as mean time between failure.

Answer

Functionality
Durability
Coupling

Question 2

Question

One of the purposes of a standard is to ensure a minimal level of acceptable ______________.

Answer

performance
process
method

Question 3

Question

While codes and safety standards address the safety of persons and property in the installation or use of a system, codes ________ ensure system functionality.

Answer

do
do not
shall

Question 4

Question

The predominant coaxial cables used for video are

Answer

Series 6, Series 11
RG 59, RG 6

Question 5

Question

_______________ is the movement of information by electromagnetic energy in the form of electrical or optical signals from one point to another through a transport medium.

Answer

Bandwidth
Frequency
Transmission

Question 6

Question

Twisted pair cable is called ___________where coaxial cable is called _____________.

Answer

unbalanced, balanced
balance, unbalanced

Question 7

Question

All electrical activity produces electric and magnetic fields.

Answer

True
False

Question 8

Question

The transmission of analog data can be converted from analog format to digital with a ____________.

Answer

Codec
Modem

Question 9

Question

________________ represents the information carrying capacity of a system.

Answer

Bandwidth
Frequency
Transmission

Question 10

Question

______________ is a property of conductor that allows storage of electric charges when potential differences (voltages) exist between the conductors.

Answer

Inductance
Capacitance
Resistance

Question 11

Question

In ac circuits, the total opposition to current flow is called ___________, which is measured in ohms.

Answer

Capacitance
Inductance
Impedance

Question 12

Question

_______________ is defined in the number of cycles a signal is repeated in a given time period.

Answer

Frequency
Voltage
Current

Question 13

Question

The measure of a signal loss resulting from the insertion of a component, link, or channel between a transmitter and receiver is

Answer

Return loss
Cross-talk
Attenuation

Question 14

Question

_______________ is a property of an electromagnetic field built around a conductor that opposes any changes in current flow in a circuit, both ac and varying dc.

Answer

Inductance
Impedance
Capacitance

Question 15

Question

The transmission of digital data can be accomplished on a direct digital basis over a digital circuit, or it can be converted to a analog signal with a ________________ .

Answer

codec
modem

Question 16

Question

This is the property of a conductor to resist the flow of electricity through it.

Answer

Resistance
Inductance
Impedance

Question 17

Question

The unwanted transfer of a signals electromagnetic energy from one or more circuits to other circuits is called______________.

Answer

Attenuation
Crosstalk
Inductance

Question 18

Question

Test equipment uses Nominal Velocity of Propagation (NVP) to determine the length of a cable.

Answer

True
False

Question 19

Question

______________ quantifies the bandwidth of a cabling system in a frequency range. ( size of the highway )

Answer

megahertz
megabit
decibel

Question 20

Question

_____________ refers to the amount of information that can be transported over the media. ( vehicles on the highway )

Answer

megahertz
megabit
decibel

Question 21

Question

Electromagnetic interference (EMI) conditions can be remedied by... select all the are correct.

Answer

shielded cabling
increasing physical separation
placing unshielded cable in conduit

Question 22

Question

The POTS signal range is transmitted between______________, which is regarded as the minimum range for human speech to be audible and recognizable.

Answer

300 and 3400 Hz
300 and 3400 MHz
300 and 3400 kHz

Question 23

Question

System gain and attenuation are typically stated as ______ gain or _______ loss.

Answer

bandwidth
frequency
decibel

Question 24

Question

________________ is the ratio of the power of the outgoing signal to the power of the reflected signal and is expressed in decibels.

Answer

return loss
insertion loss
cross talk

Question 25

Question

Because of the different twist rates in a multi-pair cable, the physical length of untwisted pairs is not equal.

Answer

True
False

Question 26

Question

What is the frequency of TIA category 6, ISO category 6/Class E.

Answer

100 MHz
250 MHz
500 MHz

Question 27

Question

What are the common modular connectors used in ICT: select all that are correct

Answer

4P4C
6P6C
8P8C

Question 28

Question

Delay skew is the difference in the propagation delay between the slowest and fastest pairs within the same cable sheath.

Answer

True
False

Question 29

Question

110 termination blocks come in increments of________________

Answer

50, 100, 300, and 900
50, 100, 600, and 900
50, 150, 300, and 900

Question 30

Question

Bix termination blocks assemblies come in increments of ____________

Answer

50, 100, 300, 900
50, 150, 300, 600
50, 250, 300, 900

Question 31

Question

Series 6 and Series 11 have a coated foil shield over the dielectric to shield against_________frequencies, while the braided shield over the coated foil is to shield against ____________frequencies.

Answer

low, high
high, low

Question 32

Question

In optical fiber, the purpose of the ________ is to confine the light within the _________ by creating a reflective boundary.

Answer

cladding and core
core and acrylate coating
core and cladding

Question 33

Question

_____________ is the most common for backbone and horizontal runs within building and campus environments.

Answer

multi-mode
single-mode

Question 34

Question

A code can be defined as " a rule or set of rules intended to ensure safety during the installation and use of materials, components, fixtures, systems, premises and related subjects."

Answer

True
False

Question 35

Question

Who normally enforces the codes and legal regulations for the jurisdiction?

Answer

OSHA
AHJ
Fire marshall

Question 36

Question

Increasing either the length of the optical fiber cable or the wavelength of the light source decreases the bandwidth and the information carrying capacity of the transmission path.

Answer

True
False

Question 37

Question

_____________ is the widening or spreading out of the modes in a light pulse as it progresses along the optical fiber.

Answer

Bandwidth
Dispersion
Refraction

Question 38

Question

Modal dispersion results from the different optical path lengths in a multi-mode fiber.

Answer

True
False

Question 39

Question

This type of optical fiber is : primarily used outdoors, has shorter jacket length to the fiber length, allows jacket to expand and contract with temperature changes, may contain water blocking material...

Answer

Tight buffered
Simplex
Loose tube

Question 40

Question

Humans can hear frequencies that range from _______to_________.

Answer

20 Hz to 2000 Hz
20 Hz to 20,000 Hz
20 MHz to 20,000 MHz

	Created by Jeanie Fitzgerald over 7 years ago

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