CompTIA HT0-201 DHTI+ Certification Practice Exam Set 4

After a Key Service Unit (KSU) phone system is installed, the technician tests the system by taking line one off the hook and calling the home from a cell phone. Instead of line two ringing the installer receives a busy signal. The BEST troubleshooting step would be to:


Options are :

  • Review the wiring for the central office lines into the phone system.
  • Review the incoming call programming in the phone system.
  • Review the voice mail system programming.
  • Review rollover settings with the phone company.

Answer : Review rollover settings with the phone company.

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


Options are :

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

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

A customer would like to see four cameras on the screen at a time. This process is called:


Options are :

  • diplexing.
  • Combining.
  • Multicasting
  • Multiplexing.

Answer : Multiplexing.

A paging adapter is used to:


Options are :

  • Simulate a single line telephone handset.
  • Supply ring voltage to the external paging system.
  • . Interface a telephone system to an external paging system.
  • Match the impedance of the external paging speaker.

Answer : . Interface a telephone system to an external paging system.

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


Options are :

  • Backup battery
  • Backup generator
  • Parallel power circuits
  • Whole house surge suppressor

Answer : Backup battery

Which of the following is an advantage to setting up a peer-to-peer network?


Options are :

  • No additional server is required
  • Files will be stored centrally
  • Backups can be run on the server
  • Security can be administered centrally

Answer : Backups can be run on the server

CompTIA CySA+ Set 4

A surveillance camera which can be natively viewed remotely using a web browser is usually referred to as a(n):


Options are :

  • Webcam.
  • IP camera
  • Analog camera.
  • CCTV camera.

Answer : IP camera

A customer would like to monitor their backyard at night remotely. The MOST effective solution would be to:


Options are :

  • Use a modulator to enhance the image quality.
  • Install a color camera with the best low light rating.
  • Integrate backyard lighting to illuminate the backyard.
  • Install a camera with IR illumination.

Answer : Install a camera with IR illumination.

Which of the following commands will display the IP address, dynamic host configuration protocol (DHCP) status and MAC address of a Windows PC?


Options are :

  • IPCONFIG /FLUSHDNS
  • IPCONFIG /RENEW
  • IPCONFIG /ALL
  • IPCONFIG /DIPLAYDNS

Answer : IPCONFIG /ALL

Which of the following is a standard for security access control?


Options are :

  • Weigand
  • CEBus
  • NetBEUI
  • Echelon

Answer : Weigand

A good way to avoid cross talk on a phone line is to:


Options are :

  • Use long cable runs.
  • Use shielded unpaired cable.
  • Add additional telephone cables.
  • Use twisted pair cable.

Answer : Use twisted pair cable.

Which of the following conductor colors represents line one in a CAT5/5e telephone cable?


Options are :

  • Brown and white-brown
  • Green and white-green
  • Blue and white-blue
  • Orange and white-orange

Answer : Blue and white-blue

CompTIA Security+ SY0 401 Test Set 2

Which of the following are features of wired equivalent privacy (WEP)?


Options are :

  • It offers data encryption.
  • It controls which IP addresses are being issued.
  • It prevents certain MAC addresses from accessing the network.
  • It prevents an intruder from knowing whether a wireless network exists.

Answer : It offers data encryption.

Distributing VoIP service throughout a residence requires a(n):


Options are :

  • Cable modem.
  • Plain old telephone service (POTS) line
  • Ethernet network.
  • VoIP router.

Answer : Ethernet network.

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


Options are :

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

Answer : At the end of each smoke loop.

In CCTV applications, which of the following should be considered when specifying lenses?


Options are :

  • Viewing angle
  • Video sensor type
  • IR illumination
  • Monochrome or Color image

Answer : Viewing angle

Which of the following phone system configurations uses proprietary phones to access most system features?


Options are :

  • Cellular phone
  • HomePlug
  • VoIP
  • Key system

Answer : Key system

Which of the following allows a user to type in an alpha-numeric string instead of manually entering a numerical IP address in a web browser?


Options are :

  • Domain Name Service (DNS)
  • Subnet mask
  • Web accelerator
  • Dynamic Host Control Protocol (DHCP) server

Answer : Domain Name Service (DNS)

CompTIA Security+ SY0-501 Questions & Answers Set 3

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


Options are :

  • Satellite
  • DSL
  • Cable
  • Leased Line

Answer : Satellite

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


Options are :

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

Answer : Black & White

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


Options are :

  • Backlight conditions
  • Camera mount
  • Lens type
  • IR illumination

Answer : IR illumination

Which of the following is a characteristic of a network hub?


Options are :

  • A hub retransmits data to all ports.
  • A hub manages bandwidth.
  • A hub can be used to segment a network.
  • A hub connects two dissimilar networks.

Answer : A hub retransmits data to all ports.

Photo-electric beam sensors typically use which type of light source?


Options are :

  • Laser
  • UV
  • Incandescent
  • IR

Answer : IR

When wiring multiple normally closed door contacts on a single zone, which of the following wiring conventions are correct?


Options are :

  • Each contact is wired in series with an end of line resistor in series.
  • Each contact is wired in parallel with an end of line resistor in series.
  • Each contact is wired in series with an end of line resistor in parallel.
  • Each contact is wired in parallel with an end of line resistor in parallel.

Answer : Each contact is wired in series with an end of line resistor in series.

CompTIA Security+ Cert. (SY0-501) Practice Tests Set 1

Placement of security video cameras should be governed by:


Options are :

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

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

Which of the following is the maximum length that a CAT5e cable can be in order to support 1000BaseT Ethernet?


Options are :

  • 75 meters (246 feet)
  • 100 meters (328 feet)
  • 25 meters (82 feet)
  • 328 meters (1076 feet)

Answer : 100 meters (328 feet)

Which of the following protocols is commonly used in a VoIP application?


Options are :

  • . Internet Control Message Protocol (ICMP)
  • Session Initiation Protocol (SIP)
  • Address Resolution Protocol (ARP)
  • Simple Key management for Internet Protocol (SKIP)

Answer : Session Initiation Protocol (SIP)

Which of the following is a security device commonly fitted into doors and windows?


Options are :

  • Shock sensor
  • Magnetic contact
  • Pressure sensor
  • Glass break detector

Answer : Magnetic contact

A customer is using DSL to connect to the internet. After adding a new phone extension, the customer can no longer access the internet. Which of the following should be checked FIRST?


Options are :

  • Whether the new extension is connected to a DSL-filter.
  • Whether the ringer equivalency number (REN) has been exceeded.
  • Whether the extension cable is DSL-capable.
  • Whether the router developed a fault.

Answer : Whether the new extension is connected to a DSL-filter.

Which of the following residential electronic devices can use the same frequencies as 802.11 b/g residential networking products and potentially cause interference? (Select THREE).


Options are :

  • Microwave ovens
  • ZigBee products
  • Z-wave products
  • 802.11a products

Answer : Microwave ovens ZigBee products Z-wave products

CompTIA JK0-801 A+ Certification Certified Practice Exam Set 5

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