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CWNP Certified Wireless IoT Solutions Administrator CWISA-102 Dumps in PDF

Free CWNP CWISA-102 Real Questions (page: 14)

CWISA-102 PDF — 67 Questions

What is defined as the weakening of signal amplitude as the signal passes through a medium?

  1. Diffraction
  2. Reflection
  3. Attenuation
  4. Scattering

Answer(s): C

Explanation:

Attenuation: Describes the progressive loss of signal strength as it travels through a medium (like air, cables, walls). It's caused by factors like absorption, distance, and obstacles.
Other Phenomena:
Diffraction: Bending of waves around obstacles.
Reflection: Waves bouncing off surfaces.
**Scattering: ** Waves dispersing in multiple directions.


Reference:

Attenuation: https://en.wikipedia.org/wiki/Attenuation



How is ASK modulation different from FSK modulation?

  1. ASK varies the amplitude of the signal while FSK shifts its frequency
  2. FSK is more sensitive to noise than ASK
  3. ASK does not work at high frequencies
  4. ASK can carry more data than FSK

Answer(s): A

Explanation:

Key Modulation Differences:
ASK (Amplitude Shift Keying): Digital data is represented by changes in the amplitude (strength) of a carrier wave.
FSK (Frequency Shift Keying): Digital data is represented by changes in the frequency of a carrier wave.


Reference:

ASK: https://en.wikipedia.org/wiki/Amplitude-shift_keying FSK: https://en.wikipedia.org/wiki/Frequency-shift_keying



What does the number in the various Quadrature Amplitude Modulation levels, such as 16 in QAM- 16 and 64 in QAM-64, indicate? (Choose the single best answer.)

  1. The speed of data transfer, which is four times the number in the QAM level
  2. The channel width, which is stipulated in MHz
  3. The number of target points in the QAM constellation, which are equivalent to amplitude and phase combinations
  4. The number of spatial streams, which is 1/4 the number in the QAM level

Answer(s): C

Explanation:

QAM Constellations: QAM (Quadrature Amplitude Modulation) uses a constellation diagram where points represent unique combinations of amplitude and phase. Bits per Symbol: The number in QAM-XX indicates the number of points:
QAM-16: 16 points = 2^4 = 4 bits per symbol
QAM-64: 64 points = 2^6 = 6 bits per symbol
Higher Data Rates: More points in the constellation enable transmitting more bits per symbol, leading to higher data rates at the same bandwidth.


Reference:

QAM: https://en.wikipedia.org/wiki/Quadrature_amplitude_modulation



What modulation is used by LoRa?

  1. OFDMA
  2. CSS
  3. ASK
  4. OFDM

Answer(s): B

Explanation:

LoRa Modulation: LoRa (Long Range) is a proprietary wireless technology that utilizes Chirp Spread Spectrum (CSS) modulation.
CSS Characteristics:
Spread spectrum technique for resilience against interference. Chirps (frequency sweeps) enable operation below the noise floor for long range.


Reference:

LoRa: https://en.wikipedia.org/wiki/LoRa
Chirp Spread Spectrum (CSS): https://en.wikipedia.org/wiki/Chirp_spread_spectrum



What primary component is required to implement a wireless transceiver in a device?

  1. GPIO pins
  2. SRAM
  3. Flash memory
  4. Radio

Answer(s): D

Explanation:

Wireless Transceiver: A transceiver is a combination of a transmitter and receiver used for wireless communication.
Radio: The radio is the primary component responsible for:
Modulation: Encoding data onto a carrier wave.
Demodulation: Extracting data from a received signal.
Transmission/Reception: Handling the actual sending and receiving of modulated signals over the air.


Reference:

Transceiver: https://en.wikipedia.org/wiki/Transceiver



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Share your comments for CWNP CWISA-102 exam with other users:

D
david
12/12/2023 12:38:00 PM

this was on the exam as of 1211/2023

Anonymous
T
Tink
7/24/2023 9:23:00 AM

great for prep

GERMANY
J
Jaro
12/18/2023 3:12:00 PM

i think in question 7 the first answer should be power bi portal (not power bi)

Anonymous
9
9eagles
4/7/2023 10:04:00 AM

on question 10 and so far 2 wrong answers as evident in the included reference link.

Anonymous
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Tai
8/28/2023 5:28:00 AM

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V
VoiceofMidnight
12/29/2023 4:48:00 PM

i passed!! ...but barely! got 728, but needed 720 to pass. the exam hit me with labs right out of the gate! then it went to multiple choice. protip: study the labs!

UNITED STATES
A
A K
8/3/2023 11:56:00 AM

correct answer for question 92 is c -aws shield

Anonymous
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Nitin Mindhe
11/27/2023 6:12:00 AM

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IRELAND
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BailleyOne
11/22/2023 1:45:00 AM

explanations for the answers are to the point.

Anonymous
P
patel
10/25/2023 8:17:00 AM

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INDIA
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MortonG
10/19/2023 6:32:00 PM

question: 128 d is the wrong answer...should be c

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11/2/2023 3:15:00 AM

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10/31/2023 12:07:00 PM

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Matheus
9/3/2023 2:14:00 PM

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yenvti2@gmail.com
8/12/2023 7:56:00 PM

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Miguel
10/5/2023 12:16:00 PM

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SPAIN
N
Noushin
11/28/2023 4:52:00 PM

i think the answer to question 42 is b not c

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susan sandivore
8/28/2023 1:00:00 AM

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Aderonke
10/31/2023 12:51:00 AM

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7/22/2022 9:59:00 AM

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S
suresh
12/16/2023 10:54:00 PM

nice document

Anonymous
W
Wali
6/4/2023 10:07:00 PM

thank you for making the questions and answers intractive and selectable.

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Nawaz
7/18/2023 1:10:00 AM

answers are correct?

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das
6/23/2023 7:57:00 AM

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Sanjay
10/15/2023 1:34:00 PM

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jaya
12/17/2023 8:36:00 AM

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Bsmaind
8/20/2023 9:23:00 AM

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11/15/2023 11:24:00 AM

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10/3/2023 12:59:00 AM

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Ranjith
8/21/2023 3:39:00 PM

for question #118, the answer is option c. the screen shot is showing the drop down, but the answer is marked incorrectly please update . thanks for sharing such nice questions.

Anonymous
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Eduardo Ramírez
12/11/2023 9:55:00 PM

the correct answer for the question 29 is d.

Anonymous
D
Dass
11/2/2023 7:43:00 AM

question no 22: correct answers: bc, 1 per session 1 per page 1 per component always

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Reddy
12/14/2023 2:42:00 AM

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