Industrial Networking Assessed Learning Exam

Question 1 *

What is a network?

A group of devices that exchange information with each other
A group of affiliated TV stations
PLCs in the same plant that are not connected
All of the above
None of the above
Question 2 *

What is a RS-232 network implemented for?

Multiple PLCs to exchange information
Communication from remote sensor clusters
Two devices to be able to communicate to one another
All of the above
None of the above
Question 3 *

Which of the following device pairings is considered half-duplex?

Slave-slave
Master-slave
Master-master
All of the above
None of the above
Question 4 *

In a RS-232, which of the following is the standard maximum distance you can run a cable?

100 feet
25 feet
50 feet
None of the above
Question 5 *

In addition to a compatible wiring scheme, what else is needed for two devices to communicate to one another?

Same language
Sourced from the same manufacturer
Installed in the same cabinet
All of the above
None of the above
Question 6 *

Which of the following device pairings would not be able to communicate effectively?

Master-slave
Master-master
Slave-slave
All of the above
None of the above
Question 7 *

The RS-422 allows use with up to how many devices?

10 devices
22 devices
11 devices
All of the above
None of the above
Question 8 *

How does the RS-485 differ from the RS-422?

Allows for 4,000 feet of cabling
Allows connection of up to 32 devices
Does not require wires
All of the above
None of the above
Question 9 *

Which of the following are the possible wire configurations that can be connected with the RS-485?

2 or 4-wire
Coaxial cable
Fiber optic cable
All of the above
None of the above
Question 10 *

What is a signal ground used for in the RS-485?

Common reference between the devices
Reduces 60 Hz noise
Eliminates RFI
All of the above
None of the above
Question 11 *

Which of the following is a true statement about RS networks?

There is no way to put a RS-232 device into a RS-485 network
In a network, devices do not need the same baud rate
A RS-232 device does not need a node address in a RS-485 network
All of the above
None of the above
Question 12 *

What is a protocol?

The language communicated between devices
How groups of pulses are organized
MODBUS
All of the above
None of the above
Question 13 *

What is the advantage of using Ethernet over a RS-485 network?

Multiple devices can be used in a network
Ethernet avoids token passing (master-slave configuration)
Computers can be connected to the network
All of the above
None of the above
Question 14 *

What is true about a device’s MAC address?

It can be changed by the user at any time
It is the same as the IP address
It is unique to that device
All of the above
None of the above
Question 15 *

According to Chris, what speeds are available on hardware cables in the Ethernet physical layer?

10 Megabit/second
100 Megabit/second
1000 Megabit(1 Gigabit)/second
All of the above
None of the above
Question 16 *

How does a switch manage signals coming in from multiple devices?

Sends all messages through
Holds on to the information from the later signal
Sends the information back to each device
All of the above
None of the above
Question 17 *

Why are IP addresses necessary on top of a MAC address?

They logically separate different parts of the network
To delineate between duplicate MAC addresses
For devices without MAC addresses
All of the above
None of the above
Question 18 *

What is an advantage of using UDP over TCP?

Reliability of the message being sent to the other device
No overhead, messages can be sent quickly with no response
The devices do not need to connect before information is transferred
All of the above
None of the above
Question 19 *

After the network is set up, what needs to be done by the user to get information from another device?

Ask for information from the User Interface
Find the IP address of the other device
Get the MAC address of the other device
All of the above
None of the above
Question 20 *

What does Wireshark allow the user to do on an Ethernet network?

Give IP addresses to all the devices
Broadcast a message asking for all MAC addresses
Monitor the traffic over a certain line in the network
All of the above
None of the above
Question 21 *

What does a VPN router allow the user to do?

Protect the devices on the network
Access information securely from the internet
Connect easier than in a port forwarding scheme
All of the above
None of the above