Block 2 - Network Devices - Automation & Instrumentation Control Systems Self Assessment Flashcards
Which protocol is most susceptible to cyberattacks due to lack of encryption?
MODBUS
Which is a limitation of BACnet MSTP?
Slow data transfer rate
BACnet MSTP employs which mechanism to ensure efficient bandwidth usage?
Token-passing
What is the maximum data transfer rate for serial MODBUS?
115.2 kbps
RS422/485 provides superior noise immunity due to:
Differential signaling
RS232’s maximum data transfer rate is:
115.2 kbps
MODBUS is primarily used in:
Industrial automation
Which feature makes MODBUS widely adopted?
Open standard design
In building automation, which protocol allows for the greatest scalability with multiple vendors?
LON
What is the maximum cable length supported by RS232?
15 meters
What is a limitation of the MODBUS protocol?
Vulnerability to cyberattacks
RS485 supports:
Multi-device networking
Which protocol supports bi-directional communication using the same wires?
HART
A key feature of the HART protocol is:
Analog and digital communication
Which device type commonly uses RS232?
Printers
BACnet protocols are commonly used in:
Building automation
Which protocol is most suitable for extremely long-distance communication?
Spread Spectrum
RS485 supports cable lengths of up to:
3,000 meters
What is a key feature of RS422/485 compared to RS232?
Longer cable distances
Which is a limitation of RS422/485 protocols?
Complexity of implementation
BACnet IP requires additional hardware like:
Routers and switches
BACnet IP’s primary advantage over BACnet MSTP is:
Use of Ethernet for communication
Spread Spectrum ensures signal security by:
Frequency-hopping
MODBUS over Ethernet supports a maximum data rate of:
100 Mbps
DeviceNet supports a maximum data rate of:
500 kbps
What feature is shared between RS422, RS485, and BACnet MSTP?
Differential signaling
Which feature is a limitation of RS232?
Slow data transfer rate
RS232 is best suited for:
Simple point-to-point communication
Which limitation is common to Ethernet TCP/IP?
Distance limitations for Ethernet cables
Which feature is specific to the LON protocol?
Open protocol promoting interoperability
Why is proper installation of automation and instrumentation control systems important?
To ensure optimal performance, safety, and reliability
What is the importance of grounding in wiring practices?
To prevent electrical noise and surges
What document helps visualize wiring connections in a control system?
Wiring diagrams
Which factor is critical when selecting mounting locations for controls?
Distance from the equipment being controlled
What aspect of automation systems is crucial for power generation plants?
Optimizing efficiency and reliability
What should be updated during the installation process?
Wiring diagrams
What role does the NFCC play in control system installation?
Specifies fire safety requirements
What should be considered when selecting cables for control systems?
Insulation, shielding, and voltage rating
What is required for unapproved gas-fired appliances in Canada?
Product approval and design registration
Which test ensures communication between all devices in a control loop?
Loop testing
What is the primary resource for understanding system installation procedures?
Manufacturer’s documentation
What is the primary purpose of antistatic materials during installation?
To minimize the risk of static discharge
Which industry uses automation systems to optimize drilling and refining processes?
Oil and gas
What is the final step in completing an installation process?
System testing
What is the main advantage of system scalability?
Allows future expansion without compatibility issues
Why is labeling wires and components important?
Simplifies troubleshooting and maintenance
What Canadian code sets safety requirements for electrical installations?
Canadian Electrical Code (CEC)
Which factor is NOT part of system compatibility considerations?
System layout aesthetics
What environmental condition is NOT a primary concern for installation?
Altitude
What is the primary purpose of communication protocols in control systems?
To enable data exchange between components
