NCTI - Installer Book Exam Questions And Answers Verified 100% Correct

NCTI - Installer Book Exam Questions And Answers Verified 100% Correct The cable modem termination system (CMTS) is one of the two main components of DOCSIS architecture. What is the other? - ANSWER B) Cable modem. Which of the following is the CableLabs-led project built to define the architecture for the delivery of real-time Internet protocol (IP) applications? - ANSWER C) PacketCable. A cable gateway typically includes a cable modem, multiple quadrature amplitude modulation (QAM) tuners, a telephone interface, and a multiport and wireless router. What is the function of the multiple quadrature amplitude modulation (QAM) tuners? - ANSWER C) Convert legacy DTV services being transported on QAM carriers to an IP format that can be received by IP devices. What is the function of the central processing unit (CPU) in a computer, laptop, or tablet? - ANSWER A) It controls input, processing, storage, and output functions. Which operating system is used exclusively on a Mac computer? - ANSWER OS X What is the best thing to do if you are wearing a hard hat in windy conditions? - ANSWER C) Put the chin strap on. When is the best time to wear rubber insulated safety gloves? - ANSWER D) When there is a possibility of coming in contact with electrical voltages. Which of the following is the proper placement for an extension ladder? - ANSWER B) 3 feet above roofline surface if moving from the ladder onto the roof. What does the appearance of the red ply on a safety strap indicate? - ANSWER C) The strap needs to be replaced right away. Which of the following is a correct adjustment of pole climbers? - ANSWER A) Adjust leg irons so that the top of the pole climber is one inch below the inner part of the knee joint. What is the minimum safe length of a pole climbing gaff? - ANSWER C) 1.25 inches measured on the flat underside next to the stirrup. As a general rule, when testing for stray voltage using a foreign voltage detector (FVD), which of the following is true? - ANSWER C) Do not continue if an alarm sounds and more than 50 volts AC is indicated. Which tool is used to check for a hot chassis condition? - ANSWER B) Digital multimeter. DMM Which of the following situations can cause a hot chassis condition? - ANSWER B) Plugging an adapter incorrectly into a nonpolarized receptacle. Which of the following safety practices must be followed when working with fiber-optic cable? - ANSWER A) Avoid looking directly into the end of a piece of fiber that may be connected to a light source. Ladders used in the cable industry are durable and do not conduct electricity through the length of the ladder. What are they made of? - ANSWER B) Fiberglass with aluminum rungs. Which of the following is one of the three correct ways of carrying a ladder? - ANSWER D) D-ring carry. Which of the following is a correct step when lifting the ladder using the D-ring carry? - ANSWER B) Turn the strand hooks so they face the strand. Before you start work after climbing an extension ladder, how should you check for electrical hazards? - ANSWER D) Use a foreign voltage detector. Which of the following is a proper step when removing the ladder from the strand? - ANSWER C) Clear the hooks from the strand. Which of the following is a step for safely removing the safety strap from the pole when preparing to descend a pole? - ANSWER A) Grasp the pole with the left hand and slightly pull yourself toward the pole to take weight off of the strap. Which of the following is one of the proper steps when descending the pole? - ANSWER C) Lower the leg into position with body weight behind it. Which of the following is true when ascending in a bucket truck? - ANSWER C) Set the parking brake. Which of the following is true about extending the boom? - ANSWER C) Lift and turn the boom as much as possible before extending it. What is the purpose of a scratch awl? - ANSWER A) Marking the location on wood or drywall for drilling holes and installing cover plate screws. What is a function of the time domain reflectometer (TDR)? - ANSWER A) Locate cable cuts, unknown splices, splitters, directional couplers, and cable impedance mismatches. What is a function of a digital multimeter (DMM)? - ANSWER B) Check for hot chassis condition. What is a function of a cable modem emulator? - ANSWER A) Work with a transponder at the headend to conduct a return test. What is the purpose of side cut or diagonal pliers? - ANSWER C) Cutting coaxial or other types of cable. Which of the following tools is used for twisted-pair work? - ANSWER B) Punch-down tool. Which tool should you have the air vents clear and always store in in a dry area? - ANSWER drill Which testing tool plugs into a modular phone jack to give you access to the individual wires at the outlet? - ANSWER C) Banjo modular test adapter. Which tool is also called "fish sticks"? - ANSWER B) Glow rod. Which SLM accessory should be changed out every few days? - ANSWER coax jumper What is a function of a cable modem emulator? - ANSWER ) Test and quantify the drop's ability to provide high-speed data (HSD) or Internet protocol (IP) Voice service. One of the first steps when you reach the site is to inspect the drop cable at the tap. Damaged cable can cause - ANSWER C) Signal leakage. Before digging in an underground installation, the utility lines will need to be located. Which of the following colors represents the electric line? - ANSWER B) The red line. Which of the following will effectively weatherproof the tap drop port connection? - ANSWER D) Install a sealing sleeve. What is a function of a cable caddy? - ANSWER A) It keeps the cable safe from kinking.