3.3.7 Check Your Understanding – Wireless Protocols in IT and OT Networks 1 Exam Answers
When preparing for the “Check Your Understanding” assessment on wireless protocols in IT and OT networks, having accurate and well-explained answers is essential for success. This section covers key concepts, including the differences between IT and OT networks, the role of wireless protocols in ensuring connectivity and security, and the specific applications of protocols like Wi-Fi, Bluetooth, Zigbee, and LoRaWAN. These answers provide clarity and detailed explanations, helping you grasp the critical elements needed to excel in the exam while reinforcing foundational knowledge in both IT and OT environments.
1. SecureNet Solutions Inc. specializes in designing secure communication protocols for IoT devices. They are currently working on enhancing the security features of a smart home system based on IEEE 802.15.4. Which of the following is NOT a basic security service provided at the data link layer by IEEE 802.15.4?
- Access Control
- Network Performance Optimization
- Replay Protection
- Message Confidentiality
Network Performance Optimization is not considered a basic security service provided by IEEE 802.15.4. Instead, network performance optimization is related to enhancing the efficiency and reliability of data transmission across the network. It involves techniques and mechanisms to improve data throughput, reduce latency, and handle network congestion. While important for the overall functionality of IoT devices and networks, it is not a security service aimed at protecting data integrity, confidentiality, or availability.
2. WaveLink Communications Inc. is exploring wireless options for a new industrial IoT platform. They need a protocol that supports low-power communication over long distances. Which option would meet their needs?
- 3GPP
- LoRa
- WirelessHART
- SNAP
LoRa (Long Range) is a low-power wide-area network (LPWAN) technology designed specifically for long-range wireless communication with low power consumption. It is ideal for applications where devices need to transmit small amounts of data over long distances while operating on battery power for extended periods. Its ability to cover several kilometers in open rural areas or penetrate deep into buildings in urban environments makes it a strong candidate for industrial IoT applications, including those in challenging or expansive industrial sites.
3. AgriTech Innovations is developing a new smart farming solution that requires sensors to monitor environmental and soil conditions over large distances. Which wireless protocol would best accommodate the unique requirements of smart agriculture?
- Wi-Fi
- Sigfox
- Bluetooth
- Zigbee
Sigfox is a low-power wide-area network (LPWAN) technology that is particularly well-suited for applications requiring long-range data transmission at low data rates. It has been specifically designed to provide wide coverage with minimal energy consumption, making it ideal for agricultural IoT applications where sensors might be spread across vast rural areas. Sigfox’s network can efficiently transmit small amounts of data over long distances, which is typically what’s needed for sensors monitoring environmental and soil conditions. The technology also supports a large number of devices while maintaining low battery consumption, which is crucial for deployments in areas where regular maintenance and battery replacement would be challenging.