HT0-201 CEA- CompTIA DHTI+ Certification Practice Exam Set 2

An end of line resistor for a normally open sensor should be installed in:   


Options are :

  • Parallel at the control panel
  • Series at the control panel
  • Parallel at the last sensor on a loop. (Correct)
  • Series at the last sensor on a loop

Answer : Parallel at the last sensor on a loop.

Which of the following choices would describe the MOST widely used communications protocol in integrating a media center PC with sub-control systems within the home? 


Options are :

  • TCP/IP (Correct)
  • UDP
  • SMTP
  • FTP

Answer : TCP/IP

A centralized lighting system has: 


Options are :

  • Load controllers located in every room
  • Multiple wired and wireless controllers.
  • Load controllers located in one or two locations. (Correct)
  • Wireless load controllers

Answer : Load controllers located in one or two locations.

While configuring a lighting system, an integrator discovers two of the ten light switches are not responding as expected to the control commands. Which of the following choices would be the logical FIRST step in diagnosing this problem? 


Options are :

  • Verify RG-6 wire mapping to the switches.
  • Verify the electrical circuit is utilizing a 20 amp breaker.
  • Verify the communication layer to the switches. (Correct)
  • Replace the serial cable to the controller.

Answer : Verify the communication layer to the switches.

The BEST interface type for home control is: 


Options are :

  • Determined by the customer. (Correct)
  • Keypad.
  • Remote control.
  • Touchscreen.

Answer : Determined by the customer.

Which of the following can be used to trigger video recording in surveillance applications? 


Options are :

  • IR illumination
  • General Packet Radio Service (GPRS) positioning
  • Man-in-the-Middle attack
  • Motion detection (Correct)

Answer : Motion detection

A whole house surge protector can be used to prevent surges from which of the following? (Select THREE).

A. Electric service feed

B. Cable and phone service feed

C. Static electricity

D. Lighting strikes

E. Electric motors

F. Light switches 


Options are :

  • A,B,C
  • A,B,D (Correct)
  • C,D,E
  • D,E,F

Answer : A,B,D

For proper equipment protection, all integrated equipment should:   


Options are :

  • Carry their own ground.
  • Share a common ground. (Correct)
  • Be grounded at each controller location.
  • Never be grounded in a single location.

Answer : Share a common ground.

Zone controlled heating, ventilation and air conditioning (HVAC) systems require which of the following? 


Options are :

  • Embedded controllers
  • Oversized ductwork
  • 48 volts of alternating current (A/C)
  • Multiple thermostats (Correct)

Answer : Multiple thermostats

Which of the following network devices contains a WAN port? 


Options are :

  • Switch
  • Network Interface Card (NIC)
  • Wireless Access Point (WAP)
  • Router (Correct)

Answer : Router

When a technician is planning the use of a security panel's auxiliary outputs, which of the following should be considered? 


Options are :

  • Check the installer's manual for the maximum number of devices allowed.
  • Add the load rating of all the connected devices. (Correct)
  • Add the distance of the cabling to the connected devices.
  • Add the voltage ratings of all the connected devices

Answer : Add the load rating of all the connected devices.

In a forced air system, a damper controller MUST be installed when:   


Options are :

  • More than one air conditioning compressor is used in a single installation.
  • Air conditioning is installed along with radiant heat.
  • Using a heat pump
  • More than one thermostat is connected to an air exchanger. (Correct)

Answer : More than one thermostat is connected to an air exchanger.

Which of the following types of video surveillance cameras will typically operate with a lower lux rating? 


Options are :

  • IP color camera
  • Color camera
  • Pinhole camera
  • Black & white camera (Correct)

Answer : Black & white camera

Which of the following is a function of an IR emitter? 


Options are :

  • Transmits the IR signal (Correct)
  • Creates the IR signal
  • Modulates the IR signal
  • Encodes the IR signal

Answer : Transmits the IR signal

Placement of security video cameras should be governed by: 


Options are :

  • The available power, ease of installation and mounting location
  • The mounting type, distance from monitor and size of field.
  • The camera type, ease of installation and distance from monitor.
  • The lens type, camera type and available light. (Correct)

Answer : The lens type, camera type and available light.

In order to maintain continuous alarm system coverage during loss of incoming utility power, which of the following should be provided?   


Options are :

  • Backup generator
  • Parallel power circuits
  • Backup battery (Correct)
  • Whole house surge suppressor

Answer : Backup battery

Which of the following home control protocols can experience RF interference from a 2.4 gigahertz cordless phone and 802.11 b/g/n equipment? 


Options are :

  • IR
  • X10
  • CEBus
  • Zigbee (Correct)

Answer : Zigbee

A 25 watt 12 volt lamp draws approximately:


Options are :

  • ne amp
  • 2 amps (Correct)
  • 5 amps
  • 25 amps

Answer : 2 amps

Which of the following is the parameter that determines light sensitivity in a surveillance camera? 


Options are :

  • MHz
  • Lumens
  • Lux (Correct)
  • Kelvin

Answer : Lux

Which of the following should be considered for additional power requirements? 


Options are :

  • IR illumination (Correct)
  • Camera mount
  • Lens type
  • Backlight conditions

Answer : IR illumination

Which of the following devices would be appropriate when controlling a small motor load (e.g. ceiling fan)?   


Options are :

  • 1000W Rated incandescent dimmer
  • 600W Rated Magnetic Low Voltage (MLV) dimmer
  • 15A Rated Relay (Correct)
  • 600W Rated Electronic Low Voltage (ELV) dimmer

Answer : 15A Rated Relay

A power supervision relay for a four wire smoke loop should be connected: 


Options are :

  • Only when sounders are installed in the detectors.
  • At the beginning of the smoke loop
  • At each smoke detector in the smoke loop
  • At the end of each smoke loop. (Correct)

Answer : At the end of each smoke loop.

Which of the following is a common communication standard associated with serial communications? 


Options are :

  • 802.11
  • TCP/IP
  • CEBus
  • ASCII (Correct)

Answer : ASCII

Which of the following cameras will provide better contrast in surveillance applications? 


Options are :

  • Color
  • Black & White (Correct)
  • IR
  • Pan Tilt Zoom (PTZ)

Answer : Black & White

Which of the following statements is an advantage of plain old telephone service (POTS) over VoIP? 


Options are :

  • POTS phones allow fax transmission.
  • POTS phones work with PBX and key systems
  • POTS service is still available when there is an electrical power outage. (Correct)
  • POTS phones allow the user to call international phone numbers.

Answer : POTS service is still available when there is an electrical power outage.

Which of the following is the commonly used port for HTTP traffic? 


Options are :

  • Port 21
  • Port 8080
  • Port 25
  • Port 80 (Correct)

Answer : Port 80

An example of a fire alarm system initiating device is a(n): 


Options are :

  • annunciator.
  • Horn strobe.
  • Pull station. (Correct)
  • Dialer

Answer : Pull station.

Heating, Ventilation, and Air Conditioning (HVAC) thermostats use which of the following voltages for control of the heating and cooling systems? 


Options are :

  • 5 Volts
  • 24 Volts (Correct)
  • 12 Volts
  • None
  • 48 Volts

Answer : 24 Volts

The primary role of a firewall is to: 


Options are :

  • Provide a secure connection between two devices.
  • Control inbound and outbound network traffic. (Correct)
  • Detect infection by web based viruses
  • Prevent spyware from being installed automatically.

Answer : Control inbound and outbound network traffic.

Which of the following is a difference between a hub and a switch? 


Options are :

  • A hub operates on the network layer of the open systems interconnection (OSI) model; a switch will operate at the application layer of the OSI model.
  • A hub connects the devices on the network; a switch connects the devices but also sends the data directly to the correct device. (Correct)
  • A switch connects the devices on the network; a hub bridges an Internet modem to the network.
  • A switch will assign dynamic IP addresses; a hub requires static IP addresses.

Answer : A hub connects the devices on the network; a switch connects the devices but also sends the data directly to the correct device.

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