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DateFebruary 19, 2026 at 4:08 pm
NameTimothy Arrowood
EmailEmail hidden; Javascript is required.
Score89% (Pass) - 110 questions correct out of 123
Computer KnowledgeCorrect Answers: (17 correct out of 17)
[email protected] is an example of a/an _______?
  • website
  • domain name
  • email address
  • network name
  • None of the Above
How many bits are in a byte?
  • 1
  • 2
  • 4
  • 8
  • None of the Above
Firefox, Google Chrome, Internet Explorer, and Safari are all examples of a/an ________?
  • ISP
  • FTP
  • Web Browser
  • Search Engine
  • None of the Above
________________ is the process in which a user sends computer information from his computer to another computer through a network.
  • Downloading
  • Uploading
  • All of the Above
  • None of the Above
What is the use of the firewall in a computer?
  • For Authentication
  • For Monitoring
  • For Data Transmission
  • For Security
  • None of the Above
".gif" is an extension of which file type?
  • Word
  • Image
  • Text
  • Audio
  • None of the Above
The term _______ refers to the computers physical components such as the monitor, keyboard, memory chips, and hard drive.
  • hardware
  • software
  • firmware
  • output
  • None of the Above
Select all the computer input devices listed below:
  • Mouse
  • Microphone
  • Webcam
  • Speakers
  • Scanner
  • Monitor
  • Keyboard
  • Printer
A user who has complete control of a computer is called a/an
  • Master User
  • Administrator
  • Standard User
  • Guest User
Select all the storage devices listed below:
  • Hard Drive
  • Monitor
  • USB Flash Drive
  • CD-Rom Disk
  • Printer
  • Speakers
  • SD Card
Networking KnowlegeCorrect Answers: (10 correct out of 10)
If two computers are connected to each other via Ethernet cables to the same router they are on the same ______
  • LAN (Local Area Network)
  • WAN (Wide Area Network)
  • WLAN (Wireless Local Network)
  • MAN (Metro Area Network)
A computer can have only one IP address
  • True
  • False
Which of the following is not a valid IPv4 address?
  • 10.15.278.5
  • 26.26.26.26
  • 125.168.158.175
  • 10.168.155.176
In a typical IP network when a new device is added, what protocol assigns it a usable IP?
  • DHCP
  • SMTP
  • MS/TP
  • DNS
  • None of the Above
MS/TP stands for:
  • Master Slave/Transmission Protocol
  • Microsoft/Transmission Protocol
  • Master Slave/Token Passing
  • None of the Above
2001:4860:4860::8888 is an example of what type of address?
  • IPv3
  • IPv4
  • IPv6
  • Physical
  • None of the Above
A firewall can stop BACnet traffic from reaching a BACnet/IP device.
  • True
  • False
Which port by default is assigned to HTTP traffic?
  • 1
  • 40
  • 80
  • 47808
  • None of the Above
Every network card comes with its own _______ address
  • IP
  • DHCP
  • MAC
  • OSI
A Cat5/Cat6 network cable contains how many wires?
  • 1
  • 4
  • 6
  • 8
  • 10
Electrical KnowledgeCorrect Answers: (9 correct out of 10)
Which of the following is a device for making, breaking, or changing connections in an electric circuit under the conditions of load for which it is rated? It is not designed for interruption of a circuit under short-circuit conditions.
  • Switch
  • Fuse
  • Generator
  • Transformer
  • None of the Above
In an electrical diagram what would the image below represent?
  • Switch
  • Fuse
  • Generator
  • AC Power Source
  • DC Power Source
In an electrical diagram what symbol is used to represent a resistor?
  • Broken line
  • Zig-zag line
  • Circle
  • Swirly line
  • Square
What is the function of a capacitor?
  • Increase wattage
  • Store electrical current
  • Redirect electrical flow
  • Reduce energy transfer
Water is to river as ______ is to electricity.
  • Resistance
  • Charged particles
  • Light
  • Heat
Low voltage means
  • The circuit conductors are safe to touch when energized
  • 0-49v
  • 120v
  • Less than 240v
How do you check the current of a circuit with a multimeter?
  • Wire the black (negative) probe to the power supply and the red (positive) probe to ground.
  • Wire the red (positive) probe to the power supply and the black (negative) probe to ground
  • Wire the multimeter to the circuit in parallel
  • Wire the multimeter to the circuit in series
1 amp is enough electrical current to kill a person
  • True
  • False
It is acceptable to not use conduit above a drop ceiling as long as the cable is plenum rated.
  • True
  • False
High voltage wires can cause interference on low voltage control wires if ran in the same conduit.
  • True
  • False
HVAC KnowledgeCorrect Answers: (8 correct out of 11)
A RTU is _________
  • A type of software
  • A digital controller
  • An analog input
  • A type of AHU
  • None of the Above
AHU stands for
  • Air Humidity Unit
  • Analog Heating Unit
  • Air Heating Unit
  • Air Handling Unit
  • None of the Above
In a typical VAV system, how does a VAV box respond when it has reached its space set point.
  • Turns off
  • Closes its supply damper
  • Sets its supply damper to maintain minimum air flow
  • Opens its damper to 100%
  • None of the Above
On a packaged HVAC unit, the economizer:
  • Turns the unit off when not in use
  • Helps filters last longer
  • Allows cooling to be accomplished by introducing outdoor air in lieu of operating mechanical cooling
  • Increases the mechanical life of the supply fan
  • None of the Above
One ton of cooling is equivalent to:
  • 200 CFM
  • 400CFM
  • 600CFM
  • 800CFM
  • 1000CFM
A typical VAV system will control to which 2/3s static set point?
  • 1.5 inches
  • 7.5 inches
  • 10 inches
  • 15 inches
  • 20 inches
What is the purpose of a heat wheel (chose all the apply)?
  • To preheat the supply air stream during heating mode
  • To precool the supply air stream during cooling mode
  • To preheat the supply air stream during cooling mode
  • To precool the supply air stream during heating mode
  • To recover energy that would otherwise be lost to building exhaust
What does VAV stand for?
  • Variable Air Volume
  • Vortex Air Velocity
  • Vortex Air Volume
  • Variable Frequency Drive
When a VAV is in heating mode its airflow is higher than in cooling mode.
  • True
  • False
Control System KnowledgeCorrect Answers: (11 correct out of 13)
A 2/3rds static pressure, or duct static pressure sensor is an example of a/an ________
  • Digital Input
  • Digital Output
  • Analog Input
  • Analog Output
  • None of the Above
HVAC Controllers can receive inputs from which of the following? (select all that apply)
  • Current Transducers
  • Thermistor
  • Static Pressure Sensors
  • Freezestat
What does BAS stand for?
  • Building Analog System
  • Binary Analog System
  • Building Automation System
  • Binary Automation System
What does the "P" in a PID control loop stand for?
  • Parallel
  • Precision
  • Proportional
  • Percentage
  • None of the Above
In the Following Sequence of Operations what does the Humidity sensor control?
  • The ERU
  • The mechanical heat ONLY during occupied mode
  • The supply fan speed
  • The mechanical heat ONLY during unoccupied mode
  • None of the Above
When properly tuned, which of the following control loop will operate in a narrow band close to the setpoint
  • P
  • I
  • ON-OFF
  • PI
  • None of the Above
Which is a good example of when PID loop control would be used?
  • Modulation of a 2-10v HW valve to maintain a discharge setpoint
  • Turning an exhaust fan on during an occupied schedule
  • Shutting down an AHU when a smoke detector is tripped
  • Opening a HW valve when a freezestat is tripped
  • None of the Above
A floating control response produces _____ number of digital outputs based on a change in an analog variable input.
  • 3
  • 1
  • 2
  • 4
  • None of the Above
A direct acting device is best described as
  • The action of a controller that produces an increase in an output as the variable increases
  • The action of a controller that produces a decrease in an output as the variable increases
  • The action of a controller that produces an increase in an output as the variable stays the same
  • None of the Above
A pressure drop is best described as
  • A device installed in the return duct
  • A device installed in the supply duct
  • The amount of pressure decrease between any two points
  • The amount of energy gained between any two points
DDC KnowledgeCorrect Answers: (12 correct out of 14)
Select all communication protocols.
  • MODBUS
  • BACnet
  • OBS
  • LonWorks
  • TCP
  • UDP
A Fan S/S or command is an example of a/an ______
  • Digital Input
  • Digital Output
  • Analog Input
  • Analog Output
BACnet is an open protocol
  • True
  • False
A Fan Status is an example of a/an _______
  • Digital Input
  • Digital Output
  • Analog Input
  • Analog Output
  • None of the Above
A VFDs speed can be controlled by an analog output.
  • True
  • False
What does DDC stand for?
  • Direct Digital Computer
  • Digital to Digital Contractor
  • Direct Digital Control
  • Definitely Don't Care
  • None of the Above
A binary input is the same thing as a digital input
  • True
  • False
When communicating over a BACnet network each device must have its own unique _______.
  • Router
  • Device Instance
  • Device Name
  • Reference Name
  • None of the Above
A device which is mechanically linked to a damper is a/an
  • Thermostat
  • Actuator
  • Router
  • VFD
Which device below would most likely be measured using a 4-20 ma transmitter?
  • Freezestat
  • Fan Status Sensor
  • High Static Cutout
  • Humidity Sensor
Wiring/Component Matching Knowledge
Diagram A
Unit Layout

Correct Answers: (9 correct out of 11)

Filter Status
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
Return Air
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
Supply Air
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
Fan
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
Cooling Coil 1
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
Outside Air Damper
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
Low Limit
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
Electric Heater 1
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
Cooling Coil 2
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
Electric Heater 2
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
Smoke Detector
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
Diagram B
Heat Pump

Correct Answers: (9 correct out of 10)

Reversing Valve
  • A
  • B
  • D
  • F
  • G
  • H
  • J
  • K
  • L
  • M
Check Valve Heating Cycle
  • A
  • B
  • D
  • F
  • G
  • H
  • J
  • K
  • L
  • M
Indoor Fan
  • A
  • B
  • D
  • F
  • G
  • H
  • J
  • K
  • L
  • M
Outdoor Unit Fan
  • A
  • B
  • D
  • F
  • G
  • H
  • J
  • K
  • L
  • M
Indoor Coil DX
  • A
  • B
  • D
  • F
  • G
  • H
  • J
  • K
  • L
  • M
Outdoor Coil DX
  • A
  • B
  • D
  • F
  • G
  • H
  • J
  • K
  • L
  • M
Check Valve Cooling Cycle
  • A
  • B
  • D
  • F
  • G
  • H
  • J
  • K
  • L
  • M
Compressor
  • A
  • B
  • D
  • F
  • G
  • H
  • J
  • K
  • L
  • M
Suction Line
  • A
  • B
  • D
  • F
  • G
  • H
  • J
  • K
  • L
  • M
Discharge Line
  • A
  • B
  • D
  • F
  • G
  • H
  • J
  • K
  • L
  • M
DIAGRAM C
Wiring Diagram

Correct Answers: (5 correct out of 5)

Electric Heat
  • R
  • G
  • Y1
  • W1
  • O
Reversing Valve
  • R
  • G
  • Y1
  • W1
  • O
Compressor
  • R
  • G
  • Y1
  • W1
  • O
24vac+
  • R
  • G
  • Y1
  • W1
  • O
Fan
  • R
  • G
  • Y1
  • W1
  • O
DIAGRAM D
AC Unit

Correct Answers: (9 correct out of 9)

TXV
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
Evaporator Fan
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
Condensor Unit Fan
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
Evaporator Coil DX
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
Condensor Coil DX
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
Compressor
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
Discharge Line
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
Suction Line
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
Liquid Line
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
DIAGRAM E
Chiller Image

Correct Answers: (11 correct out of 13)

Cooling Tower
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
  • L
  • M
Condenser Water Pump
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
  • L
  • M
Chiller Prim Pumps
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
  • L
  • M
Building Water Pumps
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
  • L
  • M
Chiller
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
  • L
  • M
Condenser Supply Water
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
  • L
  • M
Condenser Return Water
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
  • L
  • M
Chiller Prim Return Water
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
  • L
  • M
Chiller Prim Supply Water
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
  • L
  • M
Building Supply Water
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
  • L
  • M
Building Return Water
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
  • L
  • M
Condenser Water Bypass Valve
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
  • L
  • M
Building Water Bypass Valve
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
  • L
  • M