Field tech 2-3 Final
-17-(-34)=？ - ANS-17
-49 ÷ -7? - ANS-7
(-25) + (42) + (-62) + (20) =? - ANS--25
(10 x 103) + (26 x 104) = ? - ANS-270 x 10^3
(17) x (-19) =? - ANS--323
(20) ÷ (-4) + (-2) x (-10) - (-2) x (7) =? - ANS-29
(250 x 10^-6) - (7 x 10^-5) = ? - ANS-180 x 10^-6
(480 × 10^-5) divided by (60 x 10^-3) = ? - ANS-8 × 10^-2
(75 × 10^3) + (25 x 10^4) =? - ANS-32.5 x 10^4
(83 × 10^ 6) + (27 × 10^7) = ? - ANS-353 × 10^6
0.00004= —— × 10 to the power of —— ? - ANS-4,-4
0.00004= ——- × 10 to the power of ——? - ANS-4,-5
0.5349 ÷ 0.1420? - ANS-3.7669014
3 6/9 + 6 1/3 + 9 5/9= - ANS-19 5/9
67.84 + 81.786 + 4281.98 = ? - ANS-4,431.606
7 3/8 ÷7 1/4= - ANS-1. 1/58
8.13 X 0.123 =? - ANS-0.99999
A customer reports a problem of no dial tone (NDT). Upon
inspection, the technician notices that new carpeting has been
installed. What should the technician do next? - ANS-Look for a cable that runs under the
carpet; it is likely that the cable has a short from the carpeting tack strip.
A transmitter outputs 100 mW. An antenna cable connects the
transmitter to an amplifier, and the power into the amplifier's
input measures 50 ml. 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
IR's power level in this F circuit? - ANS-75mW
Access points (AP) must support what encryption techniques
in order to comply with Institute of Electrical and Electronics
Engineers (IEEE) 802.11i security standards? - ANS-Temporal Key Integrity Protocol (TKIP),
Advanced Encryption Standard (AES), and AES-CCMP (Counter-Mode/CBC-MAC Protocol).
After a digital TV (DTV) service problem has been analyzed and possible causes considered,
what is accomplished by isolating the various network elements? - ANS-It narrows the scope of
likely problem sources.
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? - ANS-Verify that the problem has been
resolved and that phone service
is running perfectly on all phones.
, All 802.11 standards use one of two frequency bands. What are these frequency bands? -
ANS-2.4 GHz and 5 GHz bands.
Although there are many different implementations of spread
spectrum technology, what are the only types specified by the
Federal Communications Commission (FCC) in the Codes of
Federal Regulation (CFR), Volume 47, Part 15? - ANS-Direct Sequencing Spread Spectrum
(DSSS) and Frequency
Hopping Spread Spectrum (FHSS).
An independent basic service set (IBSS) is also commonly
referred to as which one of the following? - ANS-ad hoc network
As a general rule, how does an increase in effective isotropic
radiated power (EIRP) relate to the link budget range? - ANS-Each 6 decibels (dB) increase in
EIRP equates to a doubling of
range.
As a subscriber enters a hotspot area, what signals their
mobile wireless device of an available Wi-Fi network? - ANS-The access point (AP) advertises
to the wireless device to enable connection.
Bluetooth is a short range wireless personal area network
(PAN) technology that is covered under which Institute of
Electrical and Electronics Engineers (IEEE) standard? - ANS-IEEE 802.15
Bluetooth uses which spread spectrum technology? - ANS-Frequency-hopping spread spectrum
(FHSS).
By taking control of the expectations you have, you are - ANS-More likely to improve your
motivation and be a better problem solver.
Considering antenna diversity, what is the
point of sampling two antennas? - ANS-To pick the input signal of whichever antenna has the
best reception.
During which step of the six-step troubleshooting process for
a digital TV (DTV) service problem are quadrature amplitude
modulation (QAM) channel measurements typically taken? - ANS-Diagnosing symptoms.
For maximum security, you should base your wireless local
area network (WLAN) user authentication on which one of the
following? - ANS-Device-independent schemes, such as user names and passwords.
Given an AP with 100 mW of output power connected through
a cable with 3 dB of loss to the antenna with a 10 dBi gain,
what is the approximate EIRP level from the antenna in mW? - ANS-500 mW
How are interframe spaces used in an Institute of Electrical
and Electronics Engineers (IEEE) 802.11 wireless local area
network (WLAN)? - ANS-They are used to defer a station's access to the medium and
provide various levels of priority.
How are optical splitters used in the forward path? - ANS-As passive branching devices that
divide an optical signal across multiple output fibers.
How can filtering augment some of the security limitations of
Wired Equivalent Privacy (WEP) in a wireless local area
-17-(-34)=？ - ANS-17
-49 ÷ -7? - ANS-7
(-25) + (42) + (-62) + (20) =? - ANS--25
(10 x 103) + (26 x 104) = ? - ANS-270 x 10^3
(17) x (-19) =? - ANS--323
(20) ÷ (-4) + (-2) x (-10) - (-2) x (7) =? - ANS-29
(250 x 10^-6) - (7 x 10^-5) = ? - ANS-180 x 10^-6
(480 × 10^-5) divided by (60 x 10^-3) = ? - ANS-8 × 10^-2
(75 × 10^3) + (25 x 10^4) =? - ANS-32.5 x 10^4
(83 × 10^ 6) + (27 × 10^7) = ? - ANS-353 × 10^6
0.00004= —— × 10 to the power of —— ? - ANS-4,-4
0.00004= ——- × 10 to the power of ——? - ANS-4,-5
0.5349 ÷ 0.1420? - ANS-3.7669014
3 6/9 + 6 1/3 + 9 5/9= - ANS-19 5/9
67.84 + 81.786 + 4281.98 = ? - ANS-4,431.606
7 3/8 ÷7 1/4= - ANS-1. 1/58
8.13 X 0.123 =? - ANS-0.99999
A customer reports a problem of no dial tone (NDT). Upon
inspection, the technician notices that new carpeting has been
installed. What should the technician do next? - ANS-Look for a cable that runs under the
carpet; it is likely that the cable has a short from the carpeting tack strip.
A transmitter outputs 100 mW. An antenna cable connects the
transmitter to an amplifier, and the power into the amplifier's
input measures 50 ml. 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
IR's power level in this F circuit? - ANS-75mW
Access points (AP) must support what encryption techniques
in order to comply with Institute of Electrical and Electronics
Engineers (IEEE) 802.11i security standards? - ANS-Temporal Key Integrity Protocol (TKIP),
Advanced Encryption Standard (AES), and AES-CCMP (Counter-Mode/CBC-MAC Protocol).
After a digital TV (DTV) service problem has been analyzed and possible causes considered,
what is accomplished by isolating the various network elements? - ANS-It narrows the scope of
likely problem sources.
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? - ANS-Verify that the problem has been
resolved and that phone service
is running perfectly on all phones.
, All 802.11 standards use one of two frequency bands. What are these frequency bands? -
ANS-2.4 GHz and 5 GHz bands.
Although there are many different implementations of spread
spectrum technology, what are the only types specified by the
Federal Communications Commission (FCC) in the Codes of
Federal Regulation (CFR), Volume 47, Part 15? - ANS-Direct Sequencing Spread Spectrum
(DSSS) and Frequency
Hopping Spread Spectrum (FHSS).
An independent basic service set (IBSS) is also commonly
referred to as which one of the following? - ANS-ad hoc network
As a general rule, how does an increase in effective isotropic
radiated power (EIRP) relate to the link budget range? - ANS-Each 6 decibels (dB) increase in
EIRP equates to a doubling of
range.
As a subscriber enters a hotspot area, what signals their
mobile wireless device of an available Wi-Fi network? - ANS-The access point (AP) advertises
to the wireless device to enable connection.
Bluetooth is a short range wireless personal area network
(PAN) technology that is covered under which Institute of
Electrical and Electronics Engineers (IEEE) standard? - ANS-IEEE 802.15
Bluetooth uses which spread spectrum technology? - ANS-Frequency-hopping spread spectrum
(FHSS).
By taking control of the expectations you have, you are - ANS-More likely to improve your
motivation and be a better problem solver.
Considering antenna diversity, what is the
point of sampling two antennas? - ANS-To pick the input signal of whichever antenna has the
best reception.
During which step of the six-step troubleshooting process for
a digital TV (DTV) service problem are quadrature amplitude
modulation (QAM) channel measurements typically taken? - ANS-Diagnosing symptoms.
For maximum security, you should base your wireless local
area network (WLAN) user authentication on which one of the
following? - ANS-Device-independent schemes, such as user names and passwords.
Given an AP with 100 mW of output power connected through
a cable with 3 dB of loss to the antenna with a 10 dBi gain,
what is the approximate EIRP level from the antenna in mW? - ANS-500 mW
How are interframe spaces used in an Institute of Electrical
and Electronics Engineers (IEEE) 802.11 wireless local area
network (WLAN)? - ANS-They are used to defer a station's access to the medium and
provide various levels of priority.
How are optical splitters used in the forward path? - ANS-As passive branching devices that
divide an optical signal across multiple output fibers.
How can filtering augment some of the security limitations of
Wired Equivalent Privacy (WEP) in a wireless local area
