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A series of questions and answers related to the field tech ii - iii conventional exam 2024. It covers various topics in telecommunications and networking, including wiring configurations, wireless networks, passive optical networks, and basic math concepts. A valuable resource for students preparing for the exam, offering insights into the types of questions they may encounter and the knowledge required to succeed.
Typology: Exams
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"What is the difference between the wiring configurations for a residential, 8-position, 8-contact (8P8C)
"In unshielded twisted-pair (UTP) cable, what is the term that describes when an information-carrying
hoc mode."
Wi-Fi network without a Windows interface."
security." "What specific problem does a wireless local area network (WLAN) resolve for corporations and home
"Why is spread spectrum technology used in applications such as Bluetooth wireless personal area
create a short range, personal communications network." "What wireless local area network (WLAN) device can be described as a half-duplex device with
"What is a half-duplex device that is only capable of Open Systems Interconnection (OSI) reference
splitters."
"Which type of star topology used in a passive optical network (PON) places the PON splitters into fiber access terminal (FAT) located deep in the network and closer to the customer premises than the
Optical line terminal (OLT)."
distribution network (ODN)."
splitters are used as passive branching devices that divide an optical signal across multiple output fibers."
connectorized ends." "Heat shrink tubing is installed over the fusion-splice to strengthen and protect it. When should the heat
fiber."
of 4"
the power of -2"
power of -6"
"You are at a customer's home and you believe you have solved the problem. When you check to be sure the resolution did not introduce any new problems, which step are you using from the six-step
your motivation and be a better problem solver."
with an inquisitive and relentless desire to solve and fix problems."
There is frequently more than one contributor to a specific DTV service problem." "After a digital TV (DTV) service problem has been analyzed and possible causes considered, what is
likely problem sources." "Which of the following digital TV (DTV) trouble calls could have been avoided with customer education
"When troubleshooting a digital TV (DTV) authorization issue, what can be verified using the set-top box
"Which type of set-top box (STB) operates more like Data Over Cable Service Interface Specification
modems." "What does a set-top box (STB) diagnostic page of a quadrature amplitude modulation (QAM) channel
channel quality is on the edge for reliable reception, and the source of the problem is likely in the distribution network or customer premises." "Which Data over Cable Service Interface Specification (DOCSIS) layer is used by the cable modem
Media Access Control (MAC) Layer." "What was introduced in Data Over Cable Service Interface Specification (DOCSIS) 3.0 to allow enough
increase the top frequency of the upstream to 85 MHz."
"In a Data Over Cable Service Interface Specification (DOCSIS) network, why is the data throughput over the return or upstream path typically less than the throughput of data over the forward or downstream
orders of modulation used to transport data over the return path cause the downstream and upstream data throughput to be unequal or asymmetrical." "What would be the downstream throughput if two quadrature amplitude modulation (QAM) channels
"What are two features that were added in Data Over Cable Service Interface Specification (DOCSIS) 3.
Orthogonal frequency division multiplexing (OFDM) and low-density parity-check (LDPC)." "Which step in the troubleshooting process requires a discussion with the customer to gather more
"When analyzing a problem, what can the technician learn by asking the customer to show or
unusual screens or customer entries can be identified." "When using a digital signal analyzer to troubleshoot data throughput in the Data Over Cable Service Interface Specification (DOCSIS) network, what is the minimum modulation error ratio (MER) into the
or greater." “What is one reason why broadband cable operators install fiber-optic cable in stages instead of
would cause too many service disruptions."
the customer premises."
then A = B because both are equal to C, which supports the axiom: Quantities equal to the same quantity are equal to each other." "What kind of reasoning is described as applying a general statement that you know to be true to a new
"When configuring a wireless router, why is changing the service set identifier (SSID) from the device
Infrastructure."
"Which organization regulates the use of wireless local area network (WLAN) devices in the United
"Which of the following IEEE 802.11 wireless local area network (WLAN) standards specifies both spread
"Why has it become cost-effective for enterprise companies to integrate wireless local area network
decreased and the quality has increased." "Which one of the following wireless standards utilizes the 5 gigahertz (GHz) frequency band for its
"Why are wireless local area networks (WLAN) usually deployed in an access capacity instead of as 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
"What type of connectivity is needed to connect networks between two buildings located across the
"In which of the following applications might a wireless local area network (WLAN) be deployed in a
network segments."
"What challenges do Wireless Internet Service Providers (WISP) have to overcome in order to provide
access, lightning, trees, mountains, tower access, and other physical obstacles to connectivity."
"Which one of the following radio frequency (RF) behaviors is defined as "the bending of a wave as it
"Which of the voltage standing wave ratios (VSWR) shown below is best for transferring radio frequency
"What are some measures that can be taken to prevent high voltage standing wave ratios (VSWR) in
and use impedance-matched hardware throughout."
accompanied by a Fresnel Zone, a series of concentric ellipsoid-shaped areas around the visual LOS path."
radiated by the antenna element."
isotropic (dBi)." "Given an access point (AP) with 100 milliwatts (mW) of output power connected through a cable with 3 decibels (dB) of loss to the antenna with a 10 decibels isotropic (dBi) gain, what is the approximate
"A transmitter outputs 100 milliwatts (mW). An antenna cable connects the transmitter to an amplifier, and the power into the amplifier's input measures 50 mW. The amplifier increases the signal to the original transmitter's power level and sends the signal to the antenna. The antenna receives the signal from the amplifier at 75 mW, and then transmits at 150 mW. What is the intentional radiator's (IR)
Wireless local area networks (WLAN), Bluetooth, and global positioning systems (GPS)."
"Residential gateways have been around for quite some time, but what capability was added to connect to Institute of Electrical and Electronics Engineers (IEEE) 802.11b, 802.11g, 802.11n, and 802.11ac
"You are designing a wireless network to which several functional workgroups are connected. You want to configure your enterprise wireless gateway to allow you to quickly assign identical network access rights to persons within the same workgroup. Which enterprise wireless gateway feature provides this
"What security service in an enterprise wireless gateway enables the wireless network administrator to
all directions around its axis."
users are located." "As a general rule, how does an increase in effective isotropic radiated power (EIRP) relate to the link
range." "What happens when an active Ethernet switch fails to sense a power over Ethernet (PoE) device on a
voltage onto a CAT-5e cable." "What power over Ethernet (PoE) device picks off the direct current (DC) voltage that has been injected into the CAT-5e cable by the injector and makes it available to the equipment through the regular DC
electromagnetic wave's electric field in relationship to the Earth's surface or plane."
hemispherical or cylindrical pattern."
"What antenna type is ideal for making a point-to-point (P2P) network connection between two office
antenna." "Why have 900 megahertz (MHz) Industrial, Scientific, and Medical (ISM) band wireless local area
"What is the Federal Communications Commission (FCC) regulation for the maximum equivalent isotropically radiated power (EIRP) from a point-to-multipoint (P22P) wireless local area network
IEEE 802.11 networks operating in the 2.4 Industrial, Scientific, and Medical (ISM) radio bands, Bluetooth transmissions appear as all-band noise."
10 meters or 33 feet."
spectrum (FHSS)." "Bluetooth is a short range wireless personal area network (WPAN) technology that is covered under
"What technologies does the IEEE 802.11n wireless standard use to achieve data rates as high as 600
and spatial multiplexing." "How wide is each of the three wireless local area network (WLAN) Unlicensed National Information
"When connecting to a wireless local area network (WLAN), what is the most important point about the
configured with matching SSIDs."
(SSID) of the network it expects to join."
"When should you consider enabling Request to Send/Clear to Send (RTS/CTS) protocol on a wireless
"What does the "on with threshold" setting of the Request to Send/Clear to Send (RTS/CTS) protocol
which frames over a certain size are announced and cleared to send by the stations." "Which version of the IEEE 802.11 wireless local area network (WLAN) standard was the first to use
When a client (or node) can receive signals from an access point (AP), but an obstacle prevents the client from receiving signals from the other clients that are connected to the network."
all client locations."
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
"What test instrument is used to locate and measure interfering narrowband radio frequency (RF)
An overlap in the signal ranges of access points (AP) or different WLANs operating on the same channels."
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
"How can filtering augment some of the security limitations of Wired Equivalent Privacy (WEP) in a
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
system." "Wireless local area networks (WLAN) that use an IEEE 802.1x protocol control network access on what
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." "What type of wireless local area network (WLAN) attack could cost an employee their job because network usage logs point directly to the employee whenever a hacker gains access to the employee's
"To prevent hacker access to passwords and Internet protocol (IP) addresses, why would you want to
the broadcast of packets to all network segments." "What information should you gather during the wireless local area network (WLAN) site survey in a
access points (AP) in ceilings that could be 40 feet high." "What test should you perform during the site survey to enable the design engineer to understand and
one has the wiring error. Continue to divide the section with the error into smaller sections until the wiring error is identified."
signal interference if blocked." "Although there are many different implementations of spread spectrum technology, what are the only
Wireless client devices on printed circuit (PC) cards that are to be installed in peripheral component interconnect (PCI) or industry standard architecture (ISA) adapters." "Why should a wireless network administrator consider installing an enterprise wireless gateway in their
administrator to manage a large wireless network using only a few central devices instead of a very large number of access points." "What device would a wireless local area network (WLAN) administrator install between the access point (AP) or bridge and the network to give indoor local area network (LAN) users as much bandwidth
"Operation as an IEEE 802.11ac device occurs only in the 5 gigahertz (GHz) Unlicensed National Information Infrastructure (U-NII) radio band, so how are 802.11ac devices able to maintain compatibility with earlier standards that operate in the 2.4 GHz Industrial, Scientific, and Medical (ISM)
"What does the Institute of Electrical and Electronics Engineers (IEEE) specify as the maximum allowable power output into the intentional radiator for IEEE 802.11a-, 802.11n-, and 802.11ac-compliant devices
"Why would a wireless local area network (WLAN) administrator rarely see the "authenticated" step on
immediately proceed into the association stage." "What is the tradeoff between the fragmenting of packets into shorter fragments versus keeping longer
from interference than longer packet fragments, but shorter packet fragments require more error correction."
standard period of time on a WLAN that each station multiplies by a random number to determine the length of time to wait before performing a clear channel assessment (CCA)." "What is the purpose of the distributed coordination function (DCF) in an IEEE 802.11 wireless local area
shared radio frequency (RF) transmission medium using the carrier sense multiple access with collision avoidance (CSMA/CA) protocol." "You wish to build a wireless network that provides significantly better throughput than a single IEEE
IEEE 802.11-compliant equipment operating in the 5 GHz U-NII bands, allowing for more more non- overlapping channels."
"Access points (AP) must support what encryption techniques in order to comply with IEEE 802.11i
Standard (AES), and AES-CCMP (Counter-Mode/CBC-MAC Protocol)." "For maximum security, you should base your wireless local area network (WLAN) user authentication
and passwords." "What are some basic questions you should ask a customer before visiting the customer's facility to
data throughput requirements, and budget." "Why is it suggested that all data collected as part of a site survey for a wireless local area network (WLAN) be included in the survey report as an attachment, appendix, or separate set of documentation?
- CORRECT ANSWER The data could be needed in the future." "What should you note in the wireless local area network (WLAN) site survey if a semidirectional
the antenna's side and back lobes for coverage and security reasons." "How would you use a laptop computer, tablet, or cell phone when performing a site survey for a
areas while roaming around the facility."