Field Tech II - III Conventional Questions and Answers 2023

Field Tech II - III Conventional Questions and Answers 2023 What is one reason why broadband cable operators install fiber-optic cable in stages instead of changing the infrastructure all at once? Changing the infrastructure all at once would cause too many service disruptions. 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 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. 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 these components is used in a passive optical network (PON)? Optical splitters 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) = 32.5 × 104 (-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. 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. What is it called when several computers are sharing files without a WAP? ad-hoc mode. What is the standard encryption method used with WPA2? AES When configuring a wireless router, why is changing the service set identifier (SSID) from the device default recommended? To avoid telling hackers exactly what the device is. Which mode uses a wireless access point (WAP) connected to a wired network? Infastructure In regard to Wi-Fi networks, what is WPS used for? To enable connection to a Wi-Fi network without a Windows interface. Which encryption method is the most secure for a wireless network? WPA2. How many channels are available with IEEE 802.11g? 11 What is the last step of the basic wireless access point (WAP) setup? Apply security. All 802.11 standards use one of two frequency bands. What are these frequency bands? 2.4 GHz and 5 GHz bands. What uses the 2.4-GHz band and runs at 54 Mbps? 802.11g Which organization regulates the use of wireless local area network (WLAN) devices in the United States? The Federal Communications Commission (FCC). Which of the following IEEE 802.11 wireless local area network (WLAN) standards specifies both spread spectrum RF and infrared (IR) transmission technologies? 802.11 Why has it become cost-effective for enterprise companies to integrate wireless local area network (WLAN) segments into their networks? The cost of wireless technology has decreased and the quality has increased. Which one of the following wireless standards utilizes the 5 gigahertz (GHz) frequency band for its signal transmissions? 802.11n Why are wireless local area networks (WLAN) usually deployed in an access capacity instead of as the network's core layer? WLANs are generally incapable of meeting the requirements of the network core layer, which needs to be very fast and stable, able to handle a tremendous amount of traffic with little difficulty, and must experience no down time. In which Open Systems Interconnection (OSI) reference model layer do wireless local area networks (LAN) operate? The Data Link Layer. What type of connectivity is needed to connect networks between two buildings located across the street from each other? Point-to-point (P2P). In which of the following applications might a wireless local area network (WLAN) be deployed in a distribution layer role? As a building-to-building bridge used to link corporate network segments. What specific problem does a wireless local area network (WLAN) resolve for corporations and home users? Excessive data cabling. What challenges do Wireless Internet Service Providers (WISP) have to overcome in order to provide "last mile data delivery" to customers? Distance to access points (AP), rooftop access, lightning, trees, mountains, tower access, and other physical obstacles to connectivity. In what manner do radio waves propagate (move) away from the source (antenna)? In a straight line in all directions at once. Which one of the following radio frequency (RF) behaviors is defined as "the bending of a wave as it passes through a medium of different density"? Refraction.