Introducing FiberOptic Networks 100% SOLUTIONS REVISED 2023//2024

Monitoring the status of optical nodes - ANSWER By remote means is not critical for maintaining network stability and reliability???? Explaining Status Monitoring Remote monitoring of optical nodes is a critical function for network stability and reliability. All scalable nodes support status monitoringTechnology that allows the network operator to remotely monitor and pinpoint malfunctions anywhere in the network and analyze them on a computer. technology. A status monitoring node transponder monitors a number of critical functions, including power supply voltages, transmitter/receiver status, and temperature, and it usually monitors a tamper switch mechanism as well. A status monitoring transponder receives downstream information from a controller located in the headend. It also generates an upstream telemetry carrier that is combined into the reverse optical transmitter input. This telemetry carrier allows the transponder to continuously communicate node functions with the controller located at the headend. Any parameters exceeding a preset threshold will generate an alarm. Digital return path transmissions - ANSWER Use dense wavelength division multiplexing (DWDM) digital return transmitters in hub-to-headend architectures. What is channel bonding? - ANSWER A 3.0 revision to Data Over Cable Service Interface Specification (DOCSIS) that significantly increases upstream and downstream transport data rates. What is MPEG (Moving Picture Experts Group)? - ANSWER A universally accepted standard for digital television, first released in 1992. Which of the following is true about optical nodes? - ANSWER They contain four main sections: the optical receiver, the RF amplifier module, the reverse optical transmitter, and the DC power supply. What product based on the Data Over Cable Service Interface Specification (DOCSIS) defines the protocols for Internet protocol (IP) telephony over hybrid fiber/coax (HFC) networks? - ANSWER PacketCable In a centralized server video-on-demand (VOD) architecture, - ANSWER The number of servers needed for video content storage is smaller than in the distributed server architecture Which of the following statements about local ad insertion is true? - ANSWER Local ad insertion is performed usually by a video server. In regard to providing high-speed data (HSD) service, - ANSWER The cable modem termination system (CMTS) can provide a data transfer rate up to 38 Mbps, using 256- QAM in a single 6 MHz channel. Which of the following is true about the synchronous optical network (SONET) transmission standard? - ANSWER SONET is the North American standard used for telephony applications. Why was the zero-dispersion point in single-mode fiber moved to 1,550 nm? - ANSWER To take advantage of the low intrinsic absorption and lower attenuation at 1,550 nm in single-mode fiber. What type of single-mode fiber is intended for fiber-to-the-home (FTTH) installations? - ANSWER The ITU-T G.657 bend-insensitive fiber (BIF). What are the primary causes of intrinsic loss in single-mode fiber? - ANSWER Excessive bending and Rayleigh scattering.??? The phenomenon, total internal reflection, is what enables an optical fiber to guide light. What characteristic of optical fiber causes total internal reflection? - ANSWER The difference in refractive indexes, between cladding and core, causes light to be reflected off the cladding and back into the core along the optical fiber