Question 1

____________________ can be PLCs, personal computers, HMIs, intelligent I/O devices, routers, and bridges, to name just a few examples.

Accepted Answer

Nodes

Question 2

Explain why early PLC networks were considered proprietary.

Accepted Answer

These were considered proprietary networks since they were only compatible with their own equipment.

Question 3

A ring network is a network topology in which nodes are connected in parallel to form a ring.

Accepted Answer

In a ring network topology, each node is connected to exactly two other nodes, forming a single continuous pathway for signals through each node - a ring. Connections are not made in parallel but in a series that forms a closed loop.

Question 4

The ____________________ is the typically high-speed, low-error data network covering a relatively small geographic area (up to several thousand meters).

Accepted Answer

The answer of The ____________________ is the typically high-speed, low-error...

Question 5

As industrial plants began to implement PLCs in a distributive or modular approach to controlling equipment, it was necessary to develop fast, ____________________, and reliable communications schemes to tie the various PLCs and their systems together.

Accepted Answer

The answer of As industrial plants began to implement PLCs...

Question 6

Explain why the star topology is becoming more common for control networks.

Accepted Answer

The answer of Explain why the star topology is becoming...

Question 7

When devices are connected to network media, they are called nodules.

Accepted Answer

When devices are connected to network media, they are referred to as nodes, not nodules.

Question 8

One of the first methods used to communicate between PLCs was a pair of wires connecting the output card of one PLC to the input card of a second PLC.

Accepted Answer

This method, known as direct wiring or hardwiring, was a simple and effective way to enable communication between PLCs by directly connecting an output from one PLC to an input of another, allowing for basic signal transmission between the two devices.

Question 9

Explain why coaxial cable is still in wide use in industrial control systems.

Accepted Answer

The answer of Explain why coaxial cable is still in...

Question 10

Explain the term packet.

Accepted Answer

The answer of Explain the term packet....

Question 11

Explain what makes a MAN different from a WAN.

Accepted Answer

The answer of Explain what makes a MAN different from...

Question 12

When twisted-pair cables are used in industrial control networks, the manufacturers of the equipment will typically specify the type and quality of the cable to be used for optimum performance.

Accepted Answer

Manufacturers specify the type and quality of twisted-pair cables for industrial control networks to ensure compatibility, reliability, and optimum performance of the equipment.

Question 13

Metropolitan Area Networks (MANs) are data communications networks that generally span a metropolitan area.

Accepted Answer

Metropolitan Area Networks (MANs) are designed to extend over an entire city, providing a way to connect local area networks (LANs) within that city to each other and to wider networks like the internet.

Question 14

Category ____________________ cable is a shielded multi-pair high performance cable with transmission rates up to 700 MHz.

Accepted Answer

The answer of Category ____________________ cable is a shielded multi-pair...

Question 15

A(n) ____________________ network is a topology in which nodes are connected to a common backbone in a daisy chain or multidrop fashion.

Accepted Answer

The answer of A(n) ____________________ network is a topology in...

Quiz 20: Structured Text Programming