1. What is the most common physical layer used for Modbus communication?

What is the maximum number of devices that can be connected to a single Modbus network?

Is Modbus protocol a master-slave or peer-to-peer protocol?

.......................is a security system that monitors and controls incoming and outgoing network traffic.

Ethernet is a standard for

Which topology is used in Ethernet?

Ethernet is another name of ............

Which of the following modes of communication supports two way traffic but in only one direction at a dime?

What is the maximum device handling capacity of serial standard protocol RS485 in terms of drivers and receivers on a single line?

The normal speed of Ethernet is

Which of the following can provide hardware handshaking?

The maximum distance for RS485 communication can be up to ............................ meters at lower speeds.

RS485 supports longer distances than RS232

Profinet is a Fieldbus standard for industrial control systems. Profibus, on the other hand, is designed for real-time data communication over Industrial Ethernet.