SACA - Smart Automation Certification Alliance IIoT and Industrial Networking Questions and Answers

Question 1

Which industrial Ethernet protocol is based on the Common Industrial Protocol (CIP) and is primarily supported by Rockwell Automation?

Accepted Answer

EtherNet/IP

Answer

PROFINET

Answer

Modbus TCP/IP

Answer

EtherCAT

Question 2

A manufacturing plant requires a highly resilient network for its critical production line to prevent a single point of failure. A single cable break should not disrupt communication between all devices. Which network topology, often implemented with protocols like DLR (Device Level Ring), is best suited for this requirement?

Accepted Answer

Ring

Answer

Bus

Answer

Star

Answer

Mesh

Question 3

A technician needs to connect a legacy PLC that only communicates via Modbus RTU (a serial protocol) to a modern, plant-wide EtherNet/IP network. Which of the following devices is specifically designed to perform this type of protocol translation?

Accepted Answer

Gateway

Answer

Managed Switch

Answer

Router

Answer

Repeater

Question 4

In order to protect a plant's Industrial Control System (ICS) network from potential threats originating from the corporate business network, a common security practice is to create a buffer zone with strictly controlled access. What is this isolated subnetwork called?

Accepted Answer

Demilitarized Zone (DMZ)

Answer

Virtual Private Network (VPN)

Answer

Subnet Mask

Answer

Firewall

Question 5

A high-speed packaging line uses a machine vision system to detect defects in real-time. The analysis of images must be performed with minimal latency to trigger a reject mechanism instantly. Within an IIoT architecture, where should this data processing occur?

Accepted Answer

At the edge

Answer

In the cloud

Answer

At the enterprise level

Answer

In a data historian

Question 6

When an IIoT sensor sends temperature data over an EtherNet/IP network, the Common Industrial Protocol (CIP) ensures the data is properly formatted and understood by the receiving PLC. At which layer of the OSI model does CIP primarily operate?

Accepted Answer

Application Layer (Layer 7)

Answer

Physical Layer (Layer 1)

Answer

Data Link Layer (Layer 2)

Answer

Network Layer (Layer 3)