WGU D337 - INTERNET OF THINGS ( IoT) AND
INFRASTRUCTURE EXAM QUESTIONS WITH COMPLETE
SOLUTIONS GUARANTEED PASS 2025/2026
IoT devices - ANSWER ->Simple networked devices such as sensors and
actuators that are installed close to the data source or control
interfaces. Usually connected via 3G, 4G, 5G, Wi-Fi, PCIe, USB or
Ethernet within an edge computing application scenario.
Edge processing - ANSWER ->A process of data aggregation,
manipulation, bandwidth reduction, and other logic directly on an IoT
sensor or device
Access network - ANSWER ->Part of a network which is concerned with
moving data to and from a sensor or edge device to a backhaul network
Gateway - ANSWER ->Building block used to move collected data (from
sensors) to the central IoT platform.
LPWAN (Low Power Wireless Area Network ) - ANSWER >Lower than 1
GHz, 868 MHz in EU called ISM (Industrial,
Scientific, and Medicine) band,
USA 915 MHz
Several techs that use this band are Sigfox, LoRaWAN, and Weightless
LPWANs have lower data rates compared to normal cellular ones
WLAN (Wireless Local Area Network) - ANSWER ->Group of collocated
computers or other devices that form a network based on radio
transmissions rather than wired connections
,What are the 4 things to consider when choosing IoT connectivity? -
ANSWER ->Data rate, power availability, range, cost
Customer Edge Device - ANSWER ->Devices that receive data from and
send commands to IoT devices.
Mobile Edge Computing (MEC) - ANSWER ->Computer node that
focuses on data aggregation, compression and transformation. The ___
server may suffer from resource limitation.
Centralized IoT platform - ANSWER ->Powerful central storage and
processing capability for IoT use cases such as data interoperability and
uniform data access. Handles management of IoT devices for remote
management.
UNB (Ultra-Narrow Band) - ANSWER ->Systems transmit the signal in a
small amount of spectrum, usually less than 1 kHz, and are particularly
suitable for small amounts of data
Spread spectrum - ANSWER ->Technique in which the signal is
transmitted on a bandwidth that is much bigger than the original
frequency to decrease interference and increase security
LoRaWAN - ANSWER ->based on LoRa protocol from Semtech.
is asynchronous and uses Spread spectrum. Suitable for dense
deployments such as buildings or cities.
Zigbee - ANSWER ->Short-ranged network with meshing
, SigFox - ANSWER ->Named for company that owns it.
Used in Narrowband (200 kHz)
Suitable for dense deployments such as buildings or cities.
Weightless - ANSWER ->Consists of three protocols, works on 2.4
Narrow band Internet of Things (NB-IoT or LTE-M2) - ANSWER -
>Designed to be lower power consumption, increase system capacity,
spectrum efficiency, and range LTE-M - ANSWER ->LTE chips built for
IoT, higher throughput and lower battery life than NB-IoT
Extended coverage - ANSWER ->IoT-optimized GSM network, deployed
with software upgrade
URLLC (Ultra-Reliable Low-Latency Communication) - ANSWER -
>Mission critical use cases where low latency is vital such as industrial
automation, remote surgery, traffic safety and control, autonomous
vehicles.
mMTC (Massive Machine Type Communications) - ANSWER ->To
support huge number of devices in future such as smart
homes/buildings, smart agriculture and asset tracking. Dense
deployment.
C-PEC (Customer Premises Edge Compute) - ANSWER >Computing
devices installed on the customer's premises adjacent to their sensors,
LAN, or IoT devices
CSP - ANSWER ->Communications Service Provider
INFRASTRUCTURE EXAM QUESTIONS WITH COMPLETE
SOLUTIONS GUARANTEED PASS 2025/2026
IoT devices - ANSWER ->Simple networked devices such as sensors and
actuators that are installed close to the data source or control
interfaces. Usually connected via 3G, 4G, 5G, Wi-Fi, PCIe, USB or
Ethernet within an edge computing application scenario.
Edge processing - ANSWER ->A process of data aggregation,
manipulation, bandwidth reduction, and other logic directly on an IoT
sensor or device
Access network - ANSWER ->Part of a network which is concerned with
moving data to and from a sensor or edge device to a backhaul network
Gateway - ANSWER ->Building block used to move collected data (from
sensors) to the central IoT platform.
LPWAN (Low Power Wireless Area Network ) - ANSWER >Lower than 1
GHz, 868 MHz in EU called ISM (Industrial,
Scientific, and Medicine) band,
USA 915 MHz
Several techs that use this band are Sigfox, LoRaWAN, and Weightless
LPWANs have lower data rates compared to normal cellular ones
WLAN (Wireless Local Area Network) - ANSWER ->Group of collocated
computers or other devices that form a network based on radio
transmissions rather than wired connections
,What are the 4 things to consider when choosing IoT connectivity? -
ANSWER ->Data rate, power availability, range, cost
Customer Edge Device - ANSWER ->Devices that receive data from and
send commands to IoT devices.
Mobile Edge Computing (MEC) - ANSWER ->Computer node that
focuses on data aggregation, compression and transformation. The ___
server may suffer from resource limitation.
Centralized IoT platform - ANSWER ->Powerful central storage and
processing capability for IoT use cases such as data interoperability and
uniform data access. Handles management of IoT devices for remote
management.
UNB (Ultra-Narrow Band) - ANSWER ->Systems transmit the signal in a
small amount of spectrum, usually less than 1 kHz, and are particularly
suitable for small amounts of data
Spread spectrum - ANSWER ->Technique in which the signal is
transmitted on a bandwidth that is much bigger than the original
frequency to decrease interference and increase security
LoRaWAN - ANSWER ->based on LoRa protocol from Semtech.
is asynchronous and uses Spread spectrum. Suitable for dense
deployments such as buildings or cities.
Zigbee - ANSWER ->Short-ranged network with meshing
, SigFox - ANSWER ->Named for company that owns it.
Used in Narrowband (200 kHz)
Suitable for dense deployments such as buildings or cities.
Weightless - ANSWER ->Consists of three protocols, works on 2.4
Narrow band Internet of Things (NB-IoT or LTE-M2) - ANSWER -
>Designed to be lower power consumption, increase system capacity,
spectrum efficiency, and range LTE-M - ANSWER ->LTE chips built for
IoT, higher throughput and lower battery life than NB-IoT
Extended coverage - ANSWER ->IoT-optimized GSM network, deployed
with software upgrade
URLLC (Ultra-Reliable Low-Latency Communication) - ANSWER -
>Mission critical use cases where low latency is vital such as industrial
automation, remote surgery, traffic safety and control, autonomous
vehicles.
mMTC (Massive Machine Type Communications) - ANSWER ->To
support huge number of devices in future such as smart
homes/buildings, smart agriculture and asset tracking. Dense
deployment.
C-PEC (Customer Premises Edge Compute) - ANSWER >Computing
devices installed on the customer's premises adjacent to their sensors,
LAN, or IoT devices
CSP - ANSWER ->Communications Service Provider
