CWNP Certified Wireless IoT Solutions Administrator Exam CWISA-102 CWISA Exam Practice Test
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Question 1
What is the primary difference between LoRa and LoRaWAN
Answer : B
LoRa:This refers to the underlying radio modulation technique using Chirp Spread Spectrum (CSS). It defines how data is physically encoded onto the wireless signal.
LoRaWAN:This is the network protocol built on top of LoRa. It manages device communication, network topology, and aspects like security. It operates at the MAC sublayer of the Data Link layer (Layer 2) of the OSI model
LoRa vs. LoRaWAN:Key takeaway is that LoRa is the physical layer technology, while LoRaWAN adds the networking layer for management.
References:
LoRa Modulation:Technical explanations of Chirp Spread Spectrum (CSS).
LoRaWAN Specification:Official documentation detailing the network architecture and MAC layer functions.
OSI Model:Descriptions of the Data Link layer and its role in networking.
Question 2
A Wi-Fi enabled weight scale is an example of what kind of health IoT device?
Answer : C
Health IoT Device Categories:
Wearable:Devices worn on the body (smartwatches, fitness trackers).
Non-wearable:Devices used without being worn (smart scales, connected medical equipment).
What kind of PoE device can be used to power a non-PoE connected object assuming PoE power is provided on the Ethernet cable?
Answer : D
PoE Splitter:A PoE splitter separates power and data from a PoE-enabled Ethernet cable, allowing the powering of non-PoE devices.
Other PoE Devices:
PoE Injector:Adds power to non-PoE Ethernet cable.
PoE Switch:Provides power directly through its ports.
Question 5
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.)
Answer : C
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.
What is most often used to track livestock on large farms and identify each animal Individually?
Answer : B
RFID for Livestock:Radio Frequency Identification (RFID) tags are the most widely used technology for livestock tracking and individual identification on large farms.
Benefits:
Unique ID:Each RFID tag has a unique code.
Data Storage:Some tags store information about the animal.
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