PROGRESSION :FIELD TECH II - III CONVENTIONAL (NCTI
2020) REVIEW/EPERT VERIFIED ACTUAL COMPLETE REAL
EXAM QUESTIONS AND CORRECT ANSWERS (100%
CORRECT ANSWERS) GUARANTEED PASS!! 2025
/2026 NEWEST UPDATE.
What layers of the Open Systems Interconnection (OSI)
reference model are specific to cable networks and are present
only between Data Over Cable Service Interface Specification
(DOCSIS) modems and the cable modem termination system
(CMTS)? - ANSWER-Layers 1 through 4 (Physical layer, Data
Link Layer, Network Layer, and Transport Layer) are applied
between the DOCSIS modem and CMTS.
What are some basic questions you should ask a customer
before visiting the customer's facility to perform a site survey?
- ANSWER-The anticipated number of users, security
requirements, data throughput requirements, and budget.
What information should you gather during the wireless local
area network
,(WLAN) site survey in a convention center for an upcoming
trade show? - ANSWER-Identify who will be installing access
points (AP) in ceilings that could be 40 feet high.
How might you confirm the presence of a hidden node on the
network? - ANSWER-Turn on the request to send/clear to send
(RTS/CTS) protocol and watch for increased network data
throughput.
Which one of the following conditions occurs when an
access point (AP) receives a distant client's signal at a lower
power level than that of a nearer client? - ANSWER-Near/Far.
Which one of the following tasks is the best choice for
troubleshooting the near/far problem? - ANSWER-Review the
location of the stations (clients) on the network.
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? - ANSWER-
Use IEEE 802.11-compliant equipment operating in the 5 GHz U-
NII bands, allowing for more more non-overlapping channels.
What test instrument is used to locate and measure interfering
narrowband radio frequency (RF) signals in an IEEE 802.11
,wireless local area network (WLAN), among other things? -
ANSWER-A spectrum analyzer.
What causes co-channel interference in a wireless local area
network (WLAN)? - ANSWER-An overlap in the signal ranges of
access points (AP) or different WLANs operating on the same
channels.
What are the three main conditions that influence the range of a
wireless local area network (WLAN)? - ANSWER-Transmission
power, antenna type and location, and environment.
What can be done to increase the coverage area of a wireless
local area network (WLAN)? - ANSWER-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.
What initialization vector (IV) do most weak implementations of
the Wireless Equivalency Protocol (WEP) use? - ANSWER-24
bit.
How can filtering augment some of the security limitations of
Wired Equivalent
, Privacy (WEP) in a wireless local area network (WLAN)? -
ANSWER-By
defining parameters to which client stations must adhere in
order to gain access to the network.
Which term describes a wireless system in which the access
point (AP) removes the wireless local area network's (WLAN)
service set identifier (SSID) from the beacon frames? -
ANSWER-Closed system.
Wireless local area networks (WLAN) that use an IEEE 802.1x
protocol control network access on what basis? - ANSWER-
Port based.
Access points (AP) must support what encryption techniques
in order to comply with IEEE 802.11i security standards? -
ANSWER-Temporal Key Integrity Protocol (TKIP), Advanced
Encryption Standard (AES), and AES-CCMP (Counter-
Mode/CBC-MAC Protocol).
What is a man-in-the-middle attack on a wireless local area
network (WLAN)? - ANSWER-A situation in which a hacker uses
an access point (AP) to effectively hijack mobile nodes (clients)
by sending a stronger signal than the legitimate AP is sending.
2020) REVIEW/EPERT VERIFIED ACTUAL COMPLETE REAL
EXAM QUESTIONS AND CORRECT ANSWERS (100%
CORRECT ANSWERS) GUARANTEED PASS!! 2025
/2026 NEWEST UPDATE.
What layers of the Open Systems Interconnection (OSI)
reference model are specific to cable networks and are present
only between Data Over Cable Service Interface Specification
(DOCSIS) modems and the cable modem termination system
(CMTS)? - ANSWER-Layers 1 through 4 (Physical layer, Data
Link Layer, Network Layer, and Transport Layer) are applied
between the DOCSIS modem and CMTS.
What are some basic questions you should ask a customer
before visiting the customer's facility to perform a site survey?
- ANSWER-The anticipated number of users, security
requirements, data throughput requirements, and budget.
What information should you gather during the wireless local
area network
,(WLAN) site survey in a convention center for an upcoming
trade show? - ANSWER-Identify who will be installing access
points (AP) in ceilings that could be 40 feet high.
How might you confirm the presence of a hidden node on the
network? - ANSWER-Turn on the request to send/clear to send
(RTS/CTS) protocol and watch for increased network data
throughput.
Which one of the following conditions occurs when an
access point (AP) receives a distant client's signal at a lower
power level than that of a nearer client? - ANSWER-Near/Far.
Which one of the following tasks is the best choice for
troubleshooting the near/far problem? - ANSWER-Review the
location of the stations (clients) on the network.
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? - ANSWER-
Use IEEE 802.11-compliant equipment operating in the 5 GHz U-
NII bands, allowing for more more non-overlapping channels.
What test instrument is used to locate and measure interfering
narrowband radio frequency (RF) signals in an IEEE 802.11
,wireless local area network (WLAN), among other things? -
ANSWER-A spectrum analyzer.
What causes co-channel interference in a wireless local area
network (WLAN)? - ANSWER-An overlap in the signal ranges of
access points (AP) or different WLANs operating on the same
channels.
What are the three main conditions that influence the range of a
wireless local area network (WLAN)? - ANSWER-Transmission
power, antenna type and location, and environment.
What can be done to increase the coverage area of a wireless
local area network (WLAN)? - ANSWER-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.
What initialization vector (IV) do most weak implementations of
the Wireless Equivalency Protocol (WEP) use? - ANSWER-24
bit.
How can filtering augment some of the security limitations of
Wired Equivalent
, Privacy (WEP) in a wireless local area network (WLAN)? -
ANSWER-By
defining parameters to which client stations must adhere in
order to gain access to the network.
Which term describes a wireless system in which the access
point (AP) removes the wireless local area network's (WLAN)
service set identifier (SSID) from the beacon frames? -
ANSWER-Closed system.
Wireless local area networks (WLAN) that use an IEEE 802.1x
protocol control network access on what basis? - ANSWER-
Port based.
Access points (AP) must support what encryption techniques
in order to comply with IEEE 802.11i security standards? -
ANSWER-Temporal Key Integrity Protocol (TKIP), Advanced
Encryption Standard (AES), and AES-CCMP (Counter-
Mode/CBC-MAC Protocol).
What is a man-in-the-middle attack on a wireless local area
network (WLAN)? - ANSWER-A situation in which a hacker uses
an access point (AP) to effectively hijack mobile nodes (clients)
by sending a stronger signal than the legitimate AP is sending.
