HT0-201 CEA- CompTIA DHTI+ Certification Practice Exam Set 6

Which of the following should be installed in a home to BEST protect the electronic devices from surges? 


Options are :

  • Point of entry protection and telephone protection
  • Telephone and coax protection
  • Point of use protection and telephone protection
  • Point of entry protection and point of use protection (Correct)

Answer : Point of entry protection and point of use protection

Cross-talk refers to the: 


Options are :

  • Installation of voice cable too close to the electrical lines.
  • Improper termination of the conductors on the RJ-45 jack
  • Introduction of noise on a cable from adjacent signal pairs. (Correct)
  • Audiblescho caused by low values of return loss

Answer : Introduction of noise on a cable from adjacent signal pairs.

Which of the following BEST describes a firewall? 


Options are :

  • A security program which monitors all local area network activity.
  • A security component designed primarily to prevent viruses from infecting the network.
  • A security service designed to prevent unauthorized traffic from entering the network (Correct)
  • A security component which assigns IP addresses

Answer : A security service designed to prevent unauthorized traffic from entering the network

A customer wants a home control system, the customer's top priority is to have access to as many features of the system from anywhere. Which of the following control interfaces BEST fits this requirement? 


Options are :

  • Keypad
  • Smartphone (Correct)
  • Touch screen
  • PDA

Answer : Smartphone

Which of the following BEST describes the Z-wave Open Standard? 


Options are :

  • A wireless network lighting control standard
  • A power line communications standard
  • A power line lighting control standard
  • A wireless network communication standard (Correct)

Answer : A wireless network communication standard

Which of the following is the maximum theoretical speed of an 802.11b network? 


Options are :

  • 6Mbps
  • 108Mbps
  • 11Mbps (Correct)
  • 54Mbps

Answer : 11Mbps

An outdoor lighting system is installed consisting of two lighting zones using power line carrier technology. The customer complains that the lights are not consistently responding to timed events or manual control inputs. Which of the following devices can the integrator install to help solve the problem? 


Options are :

  • Uninterruptible Power Supply (UPS)
  • Phase coupler (Correct)
  • Signal Attenuator
  • Whole house surge suppressor

Answer : Phase coupler

Which of the following standards is the BEST method for streaming high definition video over a wireless network?   


Options are :

  • Zigbee
  • 802.11a (Correct)
  • 802.11b
  • Z-Wave

Answer : 802.11a

Embedded control systems: 


Options are :

  • Can run multiple applications simultaneously.
  • Require IP based computers to function.
  • Have completely proprietary control software and hardware (Correct)
  • Are the only systems that provide integrated environments.

Answer : Have completely proprietary control software and hardware

Which of the following is the MOST likely indication that a user is having Ethernet connectivity problems? 


Options are :

  • No dial tone
  • No MPEG-4 video
  • No link light (Correct)
  • Blinking cursor

Answer : No link light

Of the four main broadband technologies, which one is LEAST suited for real-time VoIP applications? 


Options are :

  • DSL
  • Satellite (Correct)
  • Cable
  • Leased Line

Answer : Satellite

Which of the following is LEAST likely to cause IR interference? 


Options are :

  • Emitter positions on IR equipment
  • Ground connections on the IR connecting block
  • Electromotive Force (EMF) devices such as plasma displays or transformers
  • WiFi network devices (Correct)

Answer : WiFi network devices

Plain Old Telephone Service (POTS) arrives at the home as a(n):   


Options are :

  • Signal transmitter.
  • Analog electrical loop. (Correct)
  • Electromechanical switch.
  • IP digital distribution loop.

Answer : Analog electrical loop.

A PC control system is different from an embedded control system in that: 


Options are :

  • A PC control system can only communicate with IP based devices.
  • An embedded control system is more flexible than a PC control system
  • A PC can also run several applications simultaneously (Correct)
  • Only a PC control system can be accessed remotely

Answer : A PC can also run several applications simultaneously

An intercom function on a key system consists of:   


Options are :

  • A common path shared by all telephones. (Correct)
  • Announcing when a call is on hold.
  • The bridging of two or more lines together.
  • Extending a call to another telephone.

Answer : A common path shared by all telephones.

Which of the following connectors are MOST commonly used with serial communications cabling? 


Options are :

  • HDMI
  • BNC
  • RJ-45
  • DB-9 (Correct)

Answer : DB-9

The FIRST step in troubleshooting any subsystem at a customer's home is to check:   


Options are :

  • Power. (Correct)
  • Available spares.
  • Ambient temperature.
  • Connectivity.

Answer : Power.

Which of the following characteristics is uniquely associated with an Uninterruptible Power Supply (UPS) device? 


Options are :

  • Ground fault protection
  • Surge protection
  • Power inverter (Correct)
  • Radio frequency interference (RFI) filter

Answer : Power inverter

Which of the following features does a PBX/Key System have that two-line phones do not? 


Options are :

  • The ability to route a call to a specific phone based on caller-id. (Correct)
  • Receive and track caller-id per phone line
  • The ability to place one line on hold and answer the other.
  • The ability to create a 3-way call using both phone lines

Answer : The ability to route a call to a specific phone based on caller-id.

When the ringer equivalence number (REN) on a telephone line is exceeded:   


Options are :

  • Dialing out will not function
  • The phone will ring continuously
  • The dial tone will not be heard.
  • The phone may ring, but then disconnect. (Correct)

Answer : The phone may ring, but then disconnect.

Which of the following home control protocols have a maximum of 256 device addresses per network? 


Options are :

  • Z-Wave
  • CEBus
  • X10 (Correct)
  • Zigbee

Answer : X10

Placing a telephone call into Park mode on a Key system, does which of the following? 


Options are :

  • Places the call on hold, then drops the call without hanging up
  • Transfers the call to another telephone set
  • Allows the call to be retrieved from another telephone set on the system (Correct)
  • Forwards the call to another telephone set on the system

Answer : Allows the call to be retrieved from another telephone set on the system

Which of the following electric heating systems normally require a line voltage thermostat? 


Options are :

  • Baseboard (Correct)
  • Forced air furnace
  • Heat pump
  • Geothermal

Answer : Baseboard

Which of the following private IP addresses is valid? 


Options are :

  • 10.251.34.245 (Correct)
  • 10.230.34.310
  • 10.256.34.245
  • 9.202.34.245

Answer : 10.251.34.245

Which of the following kinds of internal wiring configuration is required for typical key service unit (KSU) phone systems? 


Options are :

  • Token-ring topography
  • Star topography (Correct)
  • Daisy-chained topography
  • Media-bus topography

Answer : Star topography

Which of the following home control protocols utilizes an existing line voltage electrical wiring infrastructure for communication and control? (Select TWO)

A. Z-Wave

B. UPB

C. ZigBee

D. X10

E. Power over Ethernet (PoE) 


Options are :

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

Answer : B,D

Which of the following commands will allow a user to view the IP address that is assigned to the computer? 


Options are :

  • ipconfig /netstat
  • ipconfig /release
  • ipconfig /showall
  • ipconfig /all (Correct)

Answer : ipconfig /all

Which of the following communication methods will MOST web tablets use for connecting to a home control system? 


Options are :

  • IR
  • RS-485
  • USB
  • Wi-Fi (Correct)

Answer : Wi-Fi

An integrated control system is being installed into a customer's home. On the wall is a sophisticated looking thermostat with an LCD display. The customer would like to control the temperature via the integrated system. Which of the following would be the MOST important item to investigate? 


Options are :

  • Whether the thermostat can communicate with the integrated system. (Correct)
  • Whether the integrated system is heating, ventilating, and air conditioning (HVAC) compatible.
  • What type of system is being used (e.g. heat pump, gas, oil, etc.)
  • Whether the system is zoned.

Answer : Whether the thermostat can communicate with the integrated system.

Which of the following is the correct definition of cross pinning? 


Options are :

  • Pin outs are incorrect at one or both of the ends of the cable. (Correct)
  • The pinning of the connector is too tight
  • The pins of the connector are bent and touching.
  • The pair of cables are crossing at the wrong angle.

Answer : Pin outs are incorrect at one or both of the ends of the cable.

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