D337 ITEC 2114 Internet of Things &
Infrastructure
Final Assessment Review
(Questions & Solutions)
2025
©2025
, 1. Case Study – IoT Architecture Deployment
A multinational industrial company is installing a new IoT system to
monitor its manufacturing processes. The design must ensure reliable
sensor data collection, real-time analytics, and secure remote control.
Question: Which architectural layer is primarily responsible for
aggregating raw sensor data and performing initial processing close to
the data source?
A. Cloud computing layer
B. Fog (edge) computing layer
C. Application layer
D. Network transport layer
ANS: B. Fog (edge) computing layer
Rationale: The fog or edge computing layer processes data near the
source, reducing latency and bandwidth usage while providing enhanced
security and real-time analytics—critical for industrial IoT deployments.
---
2. Case Study – IoT Communication Protocols
A city government deploys smart parking sensors that must report
occupancy status with minimal latency and power consumption.
Question: Which protocol is best suited for such low-power, real-time
communications?
A. HTTP
B. FTP
C. MQTT
D. SMTP
ANS: C. MQTT
Rationale: MQTT is specifically designed for lightweight,
publish/subscribe messaging in bandwidth-constrained and low-power
environments, making it ideal for smart city applications like parking
sensors.
©2025
, ---
3. Case Study – Secure IoT Data Transmission
A healthcare provider implements IoT devices for patient monitoring. It is
crucial that sensitive health data is transmitted without interception or
tampering.
Question: Which method provides end-to-end encryption of data in
transit for IoT devices?
A. TLS/SSL
B. Plain HTTP
C. FTP
D. SNMP
ANS: A. TLS/SSL
Rationale: TLS/SSL protocols encrypt data between IoT devices and
servers, ensuring confidentiality and integrity during transmission.
---
4. Case Study – Device Authentication in IoT Networks
A utility company deploys thousands of IoT sensors to monitor the power
grid. To prevent unauthorized access, it needs to implement strong
authentication mechanisms.
Question: Which standard is commonly used to manage digital
certificates for device authentication in IoT?
A. Kerberos
B. X.509
C. WEP
D. OAuth
ANS: B. X.509
Rationale: X.509 digital certificates are widely used in Public Key
Infrastructure (PKI) to authenticate IoT devices, ensuring that only
trusted hardware can connect and communicate on the network.
---
©2025
Infrastructure
Final Assessment Review
(Questions & Solutions)
2025
©2025
, 1. Case Study – IoT Architecture Deployment
A multinational industrial company is installing a new IoT system to
monitor its manufacturing processes. The design must ensure reliable
sensor data collection, real-time analytics, and secure remote control.
Question: Which architectural layer is primarily responsible for
aggregating raw sensor data and performing initial processing close to
the data source?
A. Cloud computing layer
B. Fog (edge) computing layer
C. Application layer
D. Network transport layer
ANS: B. Fog (edge) computing layer
Rationale: The fog or edge computing layer processes data near the
source, reducing latency and bandwidth usage while providing enhanced
security and real-time analytics—critical for industrial IoT deployments.
---
2. Case Study – IoT Communication Protocols
A city government deploys smart parking sensors that must report
occupancy status with minimal latency and power consumption.
Question: Which protocol is best suited for such low-power, real-time
communications?
A. HTTP
B. FTP
C. MQTT
D. SMTP
ANS: C. MQTT
Rationale: MQTT is specifically designed for lightweight,
publish/subscribe messaging in bandwidth-constrained and low-power
environments, making it ideal for smart city applications like parking
sensors.
©2025
, ---
3. Case Study – Secure IoT Data Transmission
A healthcare provider implements IoT devices for patient monitoring. It is
crucial that sensitive health data is transmitted without interception or
tampering.
Question: Which method provides end-to-end encryption of data in
transit for IoT devices?
A. TLS/SSL
B. Plain HTTP
C. FTP
D. SNMP
ANS: A. TLS/SSL
Rationale: TLS/SSL protocols encrypt data between IoT devices and
servers, ensuring confidentiality and integrity during transmission.
---
4. Case Study – Device Authentication in IoT Networks
A utility company deploys thousands of IoT sensors to monitor the power
grid. To prevent unauthorized access, it needs to implement strong
authentication mechanisms.
Question: Which standard is commonly used to manage digital
certificates for device authentication in IoT?
A. Kerberos
B. X.509
C. WEP
D. OAuth
ANS: B. X.509
Rationale: X.509 digital certificates are widely used in Public Key
Infrastructure (PKI) to authenticate IoT devices, ensuring that only
trusted hardware can connect and communicate on the network.
---
©2025
