1|Page
NCTI FIELD TECH 2 TO 3 2025
|COMPREHENSIVE Q&A FOR CERTIFICATION
SUCCESS
After resolving the problem with the premises wiring issue, which of the following
is the next step in the six-step process that the technician should take? - correct-
answer-Verify that the problem has been resolved and that phone service is
running perfectly on all phones.
If the telephone wiring is in the bus topology and the twisted-pair cable tester is
connected at the embedded multimedia terminal adapter (EMTA) with the remote
unit connected to the last outlet in the loop, what is the quickest way to locate the
incorrectly wired outlet if the tester indicates a wiring error? - correct-answer-
Break the loop into smaller sections and retest the two sections to identify which
one has the wiring error. Continue to divide the section with the error into smaller
sections until the wiring error is identified.
How should the digital multimeter (DMM) be used to troubleshoot problems in
the telephone wiring? - correct-answer-Use the voltmeter function; both the
network interface device (NID) and the embedded multimedia terminal adapter
(EMTA) provide a steady on-hook voltage.
,2|Page
What is it called when several computers are sharing files without a WAP? -
correct-answer-ad-hoc mode.
What is the standard encryption method used with WPA2? - correct-answer-AES.
When configuring a wireless router, why is changing the service set identifier
(SSID) from the device default recommended? - correct-answer-To avoid telling
hackers exactly what the device is.
Which mode uses a wireless access point (WAP) connected to a wired network? -
correct-answer-Infrastructure.
In regard to Wi-Fi networks, what is WPS used for? - correct-answer-To enable
connection to a Wi-Fi network without a Windows interface.
Which encryption method is the most secure for a wireless network? - correct-
answer-WPA2.
,3|Page
How many channels are available with IEEE 802.11g? - correct-answer-11
What is the last step of the basic wireless access point (WAP) setup? - correct-
answer-Apply security.
All 802.11 standards use one of two frequency bands. What are these frequency
bands? - correct-answer-2.4 GHz and 5 GHz bands.
Which organization regulates the use of wireless local area network (WLAN)
devices in the United States? - correct-answer-The Federal Communications
Commission (FCC).
Which of the following IEEE 802.11 wireless local area network (WLAN) standards
specifies both spread spectrum RF and infrared (IR) transmission technologies? -
correct-answer-802.11
Why has it become cost-effective for enterprise companies to integrate wireless
local area network (WLAN) segments into their networks? - correct-answer-The
cost of wireless technology has decreased and the quality has increased.
, 4|Page
Which one of the following wireless standards utilizes the 5 gigahertz (GHz)
frequency band for its signal transmissions? - correct-answer-802.11n
Why are wireless local area networks (WLAN) usually deployed in an access
capacity instead of as the network's core layer? - correct-answer-WLANs are
generally incapable of meeting the requirements of the network core layer, which
needs to be very fast and stable, able to handle a tremendous amount of traffic
with little difficulty, and must experience no down time.
In which Open Systems Interconnection (OSI) reference model layer do wireless
local area networks (LAN) operate? - correct-answer-The Data Link Layer.
What type of connectivity is needed to connect networks between two buildings
located across the street from each other? - correct-answer-Point-to-point (P2P).
In which of the following applications might a wireless local area network (WLAN)
be deployed in a distribution layer role? - correct-answer-As a building-to-building
bridge used to link corporate network segments.
What specific problem does a wireless local area network (WLAN) resolve for
corporations and home users? - correct-answer-Excessive data cabling.
NCTI FIELD TECH 2 TO 3 2025
|COMPREHENSIVE Q&A FOR CERTIFICATION
SUCCESS
After resolving the problem with the premises wiring issue, which of the following
is the next step in the six-step process that the technician should take? - correct-
answer-Verify that the problem has been resolved and that phone service is
running perfectly on all phones.
If the telephone wiring is in the bus topology and the twisted-pair cable tester is
connected at the embedded multimedia terminal adapter (EMTA) with the remote
unit connected to the last outlet in the loop, what is the quickest way to locate the
incorrectly wired outlet if the tester indicates a wiring error? - correct-answer-
Break the loop into smaller sections and retest the two sections to identify which
one has the wiring error. Continue to divide the section with the error into smaller
sections until the wiring error is identified.
How should the digital multimeter (DMM) be used to troubleshoot problems in
the telephone wiring? - correct-answer-Use the voltmeter function; both the
network interface device (NID) and the embedded multimedia terminal adapter
(EMTA) provide a steady on-hook voltage.
,2|Page
What is it called when several computers are sharing files without a WAP? -
correct-answer-ad-hoc mode.
What is the standard encryption method used with WPA2? - correct-answer-AES.
When configuring a wireless router, why is changing the service set identifier
(SSID) from the device default recommended? - correct-answer-To avoid telling
hackers exactly what the device is.
Which mode uses a wireless access point (WAP) connected to a wired network? -
correct-answer-Infrastructure.
In regard to Wi-Fi networks, what is WPS used for? - correct-answer-To enable
connection to a Wi-Fi network without a Windows interface.
Which encryption method is the most secure for a wireless network? - correct-
answer-WPA2.
,3|Page
How many channels are available with IEEE 802.11g? - correct-answer-11
What is the last step of the basic wireless access point (WAP) setup? - correct-
answer-Apply security.
All 802.11 standards use one of two frequency bands. What are these frequency
bands? - correct-answer-2.4 GHz and 5 GHz bands.
Which organization regulates the use of wireless local area network (WLAN)
devices in the United States? - correct-answer-The Federal Communications
Commission (FCC).
Which of the following IEEE 802.11 wireless local area network (WLAN) standards
specifies both spread spectrum RF and infrared (IR) transmission technologies? -
correct-answer-802.11
Why has it become cost-effective for enterprise companies to integrate wireless
local area network (WLAN) segments into their networks? - correct-answer-The
cost of wireless technology has decreased and the quality has increased.
, 4|Page
Which one of the following wireless standards utilizes the 5 gigahertz (GHz)
frequency band for its signal transmissions? - correct-answer-802.11n
Why are wireless local area networks (WLAN) usually deployed in an access
capacity instead of as the network's core layer? - correct-answer-WLANs are
generally incapable of meeting the requirements of the network core layer, which
needs to be very fast and stable, able to handle a tremendous amount of traffic
with little difficulty, and must experience no down time.
In which Open Systems Interconnection (OSI) reference model layer do wireless
local area networks (LAN) operate? - correct-answer-The Data Link Layer.
What type of connectivity is needed to connect networks between two buildings
located across the street from each other? - correct-answer-Point-to-point (P2P).
In which of the following applications might a wireless local area network (WLAN)
be deployed in a distribution layer role? - correct-answer-As a building-to-building
bridge used to link corporate network segments.
What specific problem does a wireless local area network (WLAN) resolve for
corporations and home users? - correct-answer-Excessive data cabling.
