Internet of Things (IoT)
& Infrastructure
Fundamentals — WGU-
Style Final Review
Guide
100 IoT & Infrastructure Fundamentals Questions + Answers
1. Which component acts as the "thing" in an IoT system?
A. Database server
B. Cloud dashboard
C. Sensors and actuators
D. Web application
2. What network type is most commonly used for short-range IoT connectivity?
A. MPLS
B. Bluetooth Low Energy (BLE)
C. Satellite
D. Fiber
,3. In IoT architecture, which layer processes raw data into meaningful information?
A. Perception layer
B. Network layer
C. Application layer
D. Device layer
4. Which protocol is a lightweight messaging protocol ideal for IoT devices?
A. SMTP
B. RDP
C. MQTT
D. SFTP
5. Which IP addressing version supports vastly more devices for future IoT growth?
A. IPv4
B. IPv6
C. NAT
D. DHCP
6. What term describes connecting physical objects to the internet?
A. Edge analytics
B. Distributed computing
C. Internet of Things
D. Cloud virtualization
7. Which storage model is typically used for large-scale IoT sensor logs?
A. Cold backup tapes
B. Blockchain ledger
C. Time-series databases
D. Flat text files
,8. Which IoT communication protocol typically consumes the least power?
A. Wi-Fi
B. 5G
C. Zigbee
D. Ethernet
9. What is the main purpose of edge computing in IoT?
A. Replacing all cloud services
B. Hosting websites
C. Processing data closer to the source
D. Increasing database size
10. Smart thermostats are an example of which IoT application category?
A. Industrial IoT
B. Consumer IoT
C. Agricultural IoT
D. Defense IoT
11. Which device assigns IP addresses in a network?
A. DNS server
B. DHCP server
C. Firewall
D. Router
12. What is the primary function of a firewall?
A. Assign IP addresses
B. Store sensor data
C. Control inbound/outbound traffic
D. Send telemetry to the cloud
, 13. Which IoT communication technology covers long range with low power?
A. LTE
B. LoRaWAN
C. Bluetooth
D. Wi-Fi 6
14. What cryptographic method ensures data cannot be read if intercepted?
A. Hashing
B. Encryption
C. Tokenizing
D. Compression
15. Which layer in IoT architecture includes sensors and actuators?
A. Application
B. Network
C. Perception
D. Data-processing
16. Which term describes remotely adding software updates to IoT devices?
A. Bootstrapping
B. OTA updates
C. Packet injection
D. Replication
17. Which cloud model gives the highest user control?
A. IaaS
B. PaaS
C. SaaS
D. FaaS
& Infrastructure
Fundamentals — WGU-
Style Final Review
Guide
100 IoT & Infrastructure Fundamentals Questions + Answers
1. Which component acts as the "thing" in an IoT system?
A. Database server
B. Cloud dashboard
C. Sensors and actuators
D. Web application
2. What network type is most commonly used for short-range IoT connectivity?
A. MPLS
B. Bluetooth Low Energy (BLE)
C. Satellite
D. Fiber
,3. In IoT architecture, which layer processes raw data into meaningful information?
A. Perception layer
B. Network layer
C. Application layer
D. Device layer
4. Which protocol is a lightweight messaging protocol ideal for IoT devices?
A. SMTP
B. RDP
C. MQTT
D. SFTP
5. Which IP addressing version supports vastly more devices for future IoT growth?
A. IPv4
B. IPv6
C. NAT
D. DHCP
6. What term describes connecting physical objects to the internet?
A. Edge analytics
B. Distributed computing
C. Internet of Things
D. Cloud virtualization
7. Which storage model is typically used for large-scale IoT sensor logs?
A. Cold backup tapes
B. Blockchain ledger
C. Time-series databases
D. Flat text files
,8. Which IoT communication protocol typically consumes the least power?
A. Wi-Fi
B. 5G
C. Zigbee
D. Ethernet
9. What is the main purpose of edge computing in IoT?
A. Replacing all cloud services
B. Hosting websites
C. Processing data closer to the source
D. Increasing database size
10. Smart thermostats are an example of which IoT application category?
A. Industrial IoT
B. Consumer IoT
C. Agricultural IoT
D. Defense IoT
11. Which device assigns IP addresses in a network?
A. DNS server
B. DHCP server
C. Firewall
D. Router
12. What is the primary function of a firewall?
A. Assign IP addresses
B. Store sensor data
C. Control inbound/outbound traffic
D. Send telemetry to the cloud
, 13. Which IoT communication technology covers long range with low power?
A. LTE
B. LoRaWAN
C. Bluetooth
D. Wi-Fi 6
14. What cryptographic method ensures data cannot be read if intercepted?
A. Hashing
B. Encryption
C. Tokenizing
D. Compression
15. Which layer in IoT architecture includes sensors and actuators?
A. Application
B. Network
C. Perception
D. Data-processing
16. Which term describes remotely adding software updates to IoT devices?
A. Bootstrapping
B. OTA updates
C. Packet injection
D. Replication
17. Which cloud model gives the highest user control?
A. IaaS
B. PaaS
C. SaaS
D. FaaS
