EVITP Communication and Networking Systems 1 — Questions and Answers
Question 1: Which protocol is most commonly used for communication between EV charging stations and a central management system?
- MODBUS
- OCPP (Open Charge Point Protocol) (Correct answer)
- DNP3
- BACnet
Correct answer: OCPP (Open Charge Point Protocol)
OCPP (Open Charge Point Protocol) is the industry-standard open protocol used for communication between EV charging stations and back-end management systems.
Question 2: What does the acronym OCPP stand for?
- Open Connection Power Protocol
- Operational Charging Platform Protocol
- Open Charge Point Protocol (Correct answer)
- Output Charge Point Procedure
Correct answer: Open Charge Point Protocol
OCPP stands for Open Charge Point Protocol, the open standard for communication between EV charging equipment and network management systems.
Question 3: Which network technology is most commonly used for long-distance remote monitoring of EVSE installations?
- Bluetooth
- Infrared
- Zigbee
- Cellular (4G/LTE) (Correct answer)
Correct answer: Cellular (4G/LTE)
Cellular (4G/LTE) is the most commonly used technology for remote EVSE monitoring because it provides wide-area connectivity without requiring local network infrastructure.
Question 4: What is the primary function of a Charge Management System (CMS)?
- Generate electricity for EV charging
- Monitor and control multiple EV charging stations remotely (Correct answer)
- Perform on-site physical installation of EVSE
- Provide hands-on maintenance for charging hardware
Correct answer: Monitor and control multiple EV charging stations remotely
A Charge Management System (CMS) provides centralized remote monitoring, control, billing, and reporting for multiple EV charging stations.
Question 5: Which OCPP message does a charging station send to a central system when it first comes online?
- StatusNotification
- Authorize
- BootNotification (Correct answer)
- Heartbeat
Correct answer: BootNotification
The BootNotification message is sent by a charging station to the central system upon startup to register itself and receive configuration parameters.
Question 6: ISO 15118 is primarily used in EV charging for:
- Defining physical connector pin configurations
- Setting AC power quality standards
- Regulating grid voltage at service entrance
- Vehicle-to-grid communication and Plug & Charge authentication (Correct answer)
Correct answer: Vehicle-to-grid communication and Plug & Charge authentication
ISO 15118 defines the communication protocol between EVs and EVSE, enabling features like Plug & Charge (automatic authentication) and vehicle-to-grid (V2G) communication.
Question 7: Which OCPP version introduced JSON as a primary messaging format alongside SOAP?
- OCPP 0.9
- OCPP 1.2
- OCPP 1.6 (Correct answer)
- OCPP 3.0
Correct answer: OCPP 1.6
OCPP 1.6 introduced JSON over WebSocket as an alternative to SOAP/XML, making integration lighter-weight and more developer-friendly.
EVITP Communication and Networking Systems 1
Which protocol is most commonly used for communication between EV charging stations and a central management system?