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NCTI FIELD TECH 2 TO 3 QUESTIONS WITH VERIFIED ANSWERS ALREADY GRADED A+
NCTI FIELD TECH 2 TO 3 QUESTIONS WITH VERIFIED ANSWERS ALREADY GRADED A+
[Meer zien]Voorbeeld 4 van de 173 pagina's
Voorbeeld 4 van de 173 pagina's
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Voorbeeld van de inhoud
Name: Score:170 Multiple choice questions
Term 1 of 170
Which type of set-top box (STB) operates more like Data Over Cable Service Interface
Specification(DOCSIS) cable modems with return channels on the same frequencies used for
cable modems
Short Interframe Space (SIFS)
The anticipated number of users, security required, data throughput required, and
budget
Distributed Star
STB with DOCSIS Set-top Gateway(DSG) client software and embedded DOCSIS
modems
Term 2 of 170
Which of the following best describes stereotyped thinking
the digital set-top box(STB) overheats
Someone with an inquisitive and relentless desire to solve and fix problems
FTTC is allowed a smaller number of RF amplifiers between the optical fiber and the
customer premises
Presuming that all members of a group have certain characteristics
Term 3 of 170
Which of the voltage standing wave ratios (VSWR) shown below is best for transferring radio
frequency (RF) energy between connections?
1.4:1
0.5:1
1.2:1
1.2:4
,Term 4 of 170
Which term describes the operation mode of a basic service set (BSS)
Bridge Mode
Infrastructure Mode
Closed System
Ad-hoc Mode
Term 5 of 170
In unshielded twisted pair (UTP) cable, what is the term that describes when an information-
carrying conductor makes contact with a grounded conductor
Infrastructure Mode
Communication
Ground Fault
Near/ Far
Term 6 of 170
You wish to build a wireless network that provides significantly better throughput than a single
IEEE 802.11b access point (AP) Which of the following is an acceptable solution
Use IEEE 802.11 compliant equipment operating in the 5 GHz U-NII bands, allowing for
more non-overlapping channels
The client listens for beacons until it hears a beacon listing the service set identifier
(SSID) of the network it expects to join
A significant change in attitude with a noticeable movement toward negative, hostile,
cynical, or paranoid thoughts
IEEE 802.15
,Term 7 of 170
Which component of frequency hopping spread spectrum (FHSS) system creates more
overhead than any similiar component in a direct sequence spread spectrum (DSSS) system
infrastructure mode
the interframe spacing
the data link layer
a wireless bridge
Term 8 of 170
How does a client locate a wireless local area network (WLAN) when performing passive
scanning
The client listens for beacons until it hears a beacon listing the service set identifier
(SSID) of the network it expects to join
The antenna orientation along with the antenna's side and back lobes for coverage and
security reasons
Use the voltmeter function; both the network interface device (NID) and the embedded
multimedia terminal adapter (EMTA) provide a steady on-hook voltage
the QAM channel quality is on the edge for reliable reception, and the source of the
problem is likely in the distribution network or customer premises
Term 9 of 170
What are some of the AP facts that should be detailed in a WLAN site survey
Location within facility, antenna type to be used, power output settings, how power will
be provided to unit, and the expected data throughput per unit
To control which frames over a certain size are announced and cleared to send by the
stations
To allow fair coexistence between point coordination function (PCF)-mode and
distributed coordination function (DCF)-mode clients on the network
Increase the transmission power, replace the omnidirectional antenna with a parabolic
antenna, and use the 2.4 GHz radio band instead of the 5 GHz radio band
, Term 10 of 170
When replacing a splitter to resolve a digital TV(DTV) service problem, what does confirming
the splitter output levels before attaching the output connectors do?
Tighten connections between cables and connectors and use impedance-matched
hardware throughput
Confirmation reinforces the tech's confidence that the problem will be resolved by
replacing the splitter
When remote buildings house small groups of wired clients needing wireless access to
the main network
To control which frames over a certain size are announced and cleared to send by the
stations
Term 11 of 170
How might you confirm the presence of a hidden node on the network
LOS is accompanied by a Fresnel Zone, a series of concentric ellipsoid-shaped areas
around the visual LOS path
The AP transmits the challenge text in the clear and receives the same challenge text
encrypted with the WEP key
Turn on the request to send/clear to send (RTS/CTS) protocol and watch for increased
network data throughput
IP multicast traffic is only sent to specific modem addresses on the network; IP broadcast
traffic is sent to all modems on the network
Term 12 of 170
Why is Direct Sequencing Spread Spectrum (DSSS) the most widely known and the most used
of the spread spectrum types
Its ease of implementation and high data rates
When large frames experience high collision rates
It narrows the scope of likely problem sources
Equally in all directions around its axis
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