Progression: Field Tech II - III Conventional Exam Questions and Answers Latest Updated 2024/2025 Graded A+

Progression: Field Tech II - III Conventional Exam Questions and Answers Latest Updated 2024/2025 Graded A+. What is the difference between the fiber-to-the-node (FTTN) and fiber-to-the-curb (FTTC) topologies? - An 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 passive optical network (PON)? - Optical splitters. Which type of star topology used in a passive optical network (PON) places the PON splitters into fiber access terminal (FAT) located deep in the network and closer to the customer premises than the centralized split? - Distributed star. Which element of a passive optical network (PON) uses a Bragg grating filter? - Optical line terminal (OLT). Which element of a passive optical network (PON) uses patch panels? - Optical distribution network (ODN). 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)? - 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? - In the forward path, optical splitters are used as passive branching devices that divide an optical signal across multiple output fibers. Progression: Field Tech II - III Conventional Questions and Answers Latest Updated 2024/2025 Graded A+ Which of the following describes a fiber pigtail? - Fiber-optic cable with pre-connectorized 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? - Before stripping the plastic coating from the fiber. Which of the following are statements of true axioms? - When A = C and B = C, then A = B because both are equal to C, which supports the axiom: Quantities equal to the same quantity are equal to each other. Simplify and solve the equation: If E = IR then I = ? - E/R The square of 7 = - 49 The square root of 81 = - 9 0.00004 = ______ x 10 to the power of ______. - 4, -5 (75 x 10 to the power of 3) + (25 x 10 to the power of 4) = - 32.5 x 10 to the power of 4 10 to the power of -3 has a metric prefix of ______. - Milli (480 x 10 to the power of -5) divided by (60 x 10 to the power of -3) = - 8 x 10 to the power of -2 (250 x 10 to the power of -6) - (7 x 10 to the power of -5) = - 180 x 10 to the power of -6 (75 × 103) + (25 × 104) = - (*Wrong) 100 × 10^3 (-25) + (42) + (-62) + (20) = - -25 (17) x (-19) = - -323 (-17) - (-34) = - 17 -49/-7 = - 7 (20) / (-4) + (-2) x (-10) - (-2) x (7) = - 29 3 6/9 + 6 1/3 + 9 5/9 = - 19 5/9 4/7 x 9 4/11 = - 5 27/77 7 3/8 divided by 7 1/4 = - 1 1/58 8.13 X 0.123 = - 0.99999 0.5349 divided by 0.1420 = - 3.7669014 Which of the following is a method for controlling expectations? - Identify the source of emotional overload. Which of the following best describes stereotyped thinking? - Presuming that all members of a group have certain characteristics. The attribute of being "active" as a critical thinker means - 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? - 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? - A significant change in attitude with a noticeable movement toward negative, hostile, cynical, or paranoid thoughts You are at a customer's home and you are asking the customer whether the problem is intermittent or constant. Which step are you using from the six-step troubleshooting process? - Identifying the problem. Why should you take the time to take notes and accurately record data at each job location? - 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 the resolution did not introduce any new problems, which step are you using from the six-step troubleshooting process? - Verifying the solution. To break the habit of a negative self-talk cycle - Tell yourself "not now" and move onto a positive thought whenever negative thoughts occur. By taking control of the expectations you have, you are - More likely to improve your motivation and be a better problem solver. Which of the following characterizes the successful troubleshooter? - Someone 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? - 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? - 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 quadrature amplitude modulation (QAM) channel measurements typically taken? - 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? - Confirmation reinforces the technician's confidence that the problem will be resolved by replacing the splitter. Which of the following digital TV (DTV) trouble calls could have been avoided with customer education about the product? - The digital set-top box (STB) overheats. When troubleshooting a digital TV (DTV) authorization issue, what can be verified using the settop box (STB) diagnostic page? - 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? - 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? - Operate 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? - 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 the cable modem termination system (CMTS) to differentiate between cable modems? - The 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? - The option to increase the top frequency of the upstream to 85 MHz. 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? - 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 megabits per second (Mbps) were bonded? - 76 Mbps. What are two features that were added in Data Over Cable Service Interface Specification (DOCSIS) 3.1 to extend the viability of hybrid fiber/coax (HFC) networks into the next decade? - Orthogonal frequency division multiplexing (OFDM) and low-density parity-check (LDPC). How does Internet protocol (IP) multicast differ from IP broadcast? - IP multicast traffic is only sent to specific modem addresses on the network; IP broadcast traffic is sent to all modems on the network. Which step in the troubleshooting process requires a discussion with the customer to gather more detail about the problem? - Step 1: Identify the problem. When analyzing a problem, what can the technician learn by asking the customer to show or demonstrate the problem? - The symptoms of the problem can be viewed and any unusual screens or customer entries can be identified. When using a digital signal analyzer to troubleshoot data throughput in the Data Over Cable Service Interface Specification (DOCSIS) network, what is the minimum modulation error ratio (MER) into the cable modem for a 256- quadrature amplitude modulation (QAM) carrier? - 32 dB or greater. What layers of the Open Systems Interconnection (OSI) reference model are specific to cable networks and are present only between Data Over Cable Service Interface Specification (DOCSIS) modems and the cable modem termination system (CMTS)? - Layers 1 through 4 (Physical layer, Data Link Layer, Network Layer, and Transport Layer) are applied between the DOCSIS modem and CMTS. A customer reports a problem of no dial tone (NDT). Upon inspection, the technician notices that new carpeting has been installed. What should the technician do next? - Look for a cable that runs under the carpet; it is likely that the cable has a short from the carpeting tack strip. What is the likely problem when there is dial tone on one phone connected to an outlet, but not on two other phones connected to two different outlets? - An open circuit caused by a break in a conductor, poor contact in a modular connector, or an incorrect wire connection.