Progression: Field Tech II - III Conventional

What is one reason why broadband cable operators install fiber-optic cable 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 the fiber-to-the-node (FTTN) and fiber-to-the-curb (FTTC) topologies? - Answer-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)? - Answer-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? - Answer-Distributed star. Which element of a passive optical network (PON) uses a Bragg grating filter? - Answer-Optical line terminal (OLT). Which element of a passive optical network (PON) uses patch panels? - Answer-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)? - 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 are statements of true axioms? - Answer-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 = ? - Answer-E/R