NCTI Final Exam: Progression Field Tech 2- 3 Test Exam Latest Update 2023/2024 | Complete Solutions Field Tech II-III Convectional.

NCTI Final Exam: Progression Field Tech 2- 3 Test Exam Latest Update 2023/2024 | Complete Solutions Field Tech II-III Convectional. What is one reason why broadband cable operators install fiber optic cables in stages instead of changing the infrastructure all at once - ANSWER-Changing the infrastructure all at once would cause too many service disruptions What is the difference between FTTN and FTTC - ANSWER-FTTC is allowed a smaller number of RF amplifiers between the optical fiber and the customer premises Which of these components is used in a PON(Passive Optical Network) - ANSWEROptical Splitters Which type of Star topology used in a PON(Passive Optical Network) places the PON splitters into FATS(Fiber Access Terminals) located deep in the network and closer to the customer premises than the centralized split - ANSWER-Distributed Star Which element of a PON(Passive Optical Network) uses a Bragg grating filter - ANSWER-OLT(Optical Line Terminal) Which element of a PON(Passive Optical Network) uses Patch Panels - ANSWERODN(Optical Distribution Network) What is it about Radio Frequency over Glass(RFoG) that made broadband cable operators envision using it to make a seamless transition from the legacy hybrid/fiber coax(HFC) architecture over to a gigabit-capable passive optical network (GPON) or Ethernet passive optical network (EPON) - ANSWER-RFoG can operate in parallel with GPON or EPON, which eliminates the need for any downtime during the transition How are optical splitters used in the forward path - ANSWER-In the forward path, optical splitters are used as passive branching devices that divide an optical signal across multiple output fibers Which of the following describes a fiber pigtail - ANSWER-Fiber-optic cable with preconnectorized ends Heat Shrink tubing is installed over the fusion-splice to strengthen and protect it. When should the heat shrink be installed on the fiber - ANSWER-Before stripping the plastic coating from the fiber Which of the following is a method for controlling expectations - ANSWER-focus on the bigger picture rather than smaller tasks Which of the following best describes stereotyped thinking - ANSWER-Presuming that all members of a group have certain characteristics The attribute of being "active" as a critical thinker means - ANSWER-You observe and take notes relevant to the issue What kind of reasoning is described as applying a general statement that you know to be true to a new situation - ANSWER-Deductive It is essential to pay attention to warning signs of stress overload. Poor attitude is one of the behaviors that may indicate that you are overstressed. What are the symptoms of poor attitude behavior - ANSWER-A significant change in attitude with a noticeable movement toward negative, hostile, cynical, or paranoid thoughts You are at a customer's house and you are asking the customer whether the problem is intermittent or constant. Which step are you using from the six-step troubleshooting process - ANSWER-Identifying the problem Why should you take the time to take notes and accurately record data at each job location - ANSWER-Notes and recorded data are tools that can help you accurately remember events at a site that can help you determine a plan of action or evaluate the decisions you made You are at a customer's home and you believe you have solved the problem. When you check to be sure there are no new problems, which step are you using - ANSWERVerifying the Solution To break the habit of a negative self-talk cycle - ANSWER-Tell yourself "not now" and move onto a positive thought whenever negative thoughts occur By taking control of the expectations you have you are - ANSWER-more likely to improve your motivation and be a better problem solver Which of the following characterizes the successful troubleshooter - ANSWERSomeone with an inquisitive and relentless desire to solve and fix problems What must a technician be aware of when analyzing a Digital TV(DTV) problem - ANSWER-There is frequently more than one contributor to a specific DTV service problem After a digital TV(DTV) service problem has been analyzed and possible causes considered, what is accomplished by isolating the various network elements - ANSWER-It narrows the scope of likely problem sources During which step of the six-step troubleshooting process for a digital TV(DTV) service problem are QAM(Quadrature amplitude modulation) channel measurements typically taken - ANSWER-Diagnosing symptoms When replacing a splitter to resolve a digital TV(DTV) service problem, what does confirming the splitter output levels before attaching the output connectors do? - ANSWER-Confirmation reinforces the tech's confidence that the problem will be resolved by replacing the splitter Which of the following DTV(digital TV) trouble calls could have been avoided with customer education about the product - ANSWER-the digital set-top box(STB) overheats When troubleshooting a digital TV(DTV) authorization issue, what can be verified using the set-top box(STB) diagnostic page - ANSWER-STB reception of authorization message data Which type of set-top box (STB) operates more like Data Over Cable Service Interface Specification(DOCSIS) cable modems with return channels on the same frequencies used for cable modems - ANSWER-STB with DOCSIS Set-top Gateway(DSG) client software and embedded DOCSIS modems Because the spectral density of a quadrature amplitude modulation(QAM) channel is much higher than that of an analog TV channel, what is done to ensure equal power in all channels in a network with analog and digital modulation channels - ANSWEROperate the analog TV channels at higher amplitude level than the QAM channels What does a set-top box (STB) diagnostic page of a quadrature amplitude modulation(QAM) channel showing signal-to-noise ratio(SNR) near or below 30 dB indicate - ANSWER-the QAM channel quality is on the edge for reliable reception, and the source of the problem is likely in the distribution network or customer premises Which Data Over Cable Service Interface Specification (DOCSIS) layer is used by cable modem termination system (CMTS) to differentiate between cable modems - ANSWERthe DOCSIS Media Access Control (MAC) Layer What was introduced in Data Over Cable Service Interface Specification(DOCSIS) 3.0 to allow enough bandwidth for upstream carriers from previous DOCSIS versions - ANSWER-The option to increase the top frequency of the upstream to 85MHz In a Data Over Cable Service Interface Specification (DOCSIS) network, why is the data throughput over the return or upstream path typically less than the throughput of data over the forward or downstream path - ANSWER-Compared to the downstream path, the narrower bandwidths and lower orders of modulation used to transport data over the return path cause the downstream and upstream data throughput to be unequal or asymmetrical What would be the downstream throughput if two quadrature amplitude modulation (QAM) channels with a throughput of 38 Mbps were bonded - ANSWER-76 Mbps