NCTI Fiber Installation & Activation Practice Exam

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• Why is total internal reflection important in fiber optics?
• Which type of optical amplifier is known to produce no measurable distortion to the modulated light wave?
• Which type of diode requires a higher voltage power supply and more complex circuitry than PIN diodes?
• What is the purpose of visual fault locating in fiber testing?
• What is the common refractive index profile used in single-mode fiber?
• What is a common use for fiber optic cables in telecommunications?
• What is the effect of excessive bending of fiber optic cables?
• Chromatic dispersion in fiber optics is a combination of which two types of dispersions?
• What does the National Electrical Safety Code (NESC) primarily provide guidelines for?
• What device can be attached to a pulling line to prevent twisting of fiber-optic cables during installation?
• What does fiber identification include?
• When is it necessary to label pigtails in optical fiber setups?
• What are intrinsic losses primarily attributed to in fiber optics?
• What advantage does a splice tray offer during maintenance?
• Which type of optical splitter package resembles a standard fusion splice protector?
• What is the primary objective of fiber termination?
• What are the primary causes of intrinsic loss in single-mode fiber?
• Why is grounding to earth important in fiber-optic installations?
• In the context of network maps, what does a 'node' represent?
• What is a fiber optic patch panel?
• What are the main components of a fiber optic system?
• What is an example of transport media in a telecommunications network?
• If a conduit is missing a pulling line, what can be used as an alternative?
• What should be the minimum bending radius of a fiber optic cable to avoid damage?
• What does the "fiber count" in a cable indicate?
• Which statement about local ad insertion is accurate?
• What is a characteristic of optical splitters in an optical network?
• What does the multiplication process, which amplifies the electrical signal in an APD, introduce into the electrical output of an optical detector?
• What is one reason broadband cable operators install fiber-optic cable in stages instead of changing the infrastructure all at once?
• In terms of optical networks, what does reflectance refer to?
• Which of the following is true regarding the optical SNR in a transmission line?
• In fiber optics, what is the significance of the core diameter?
• What option is commonly available on most optical nodes for connecting to the power supply?
• What is the primary challenge when working with fiber optic installations?
• What equipment should be installed on long lengths of aerial fiber-optic cable to minimize static electricity hazards?
• In a HFC fiber-optic node, which common DC voltage is produced alongside +5 and +12?
• What does MPEG represent in the context of digital television?
• What is one drawback of using Fabry-Perot (F-P) lasers in high-speed data (HSD) networks?
• What occurs in the wavelength division multiplexing (WDM) process?
• Which type of optical detection involves a photodiode that converts the light waves to an electrical signal that varies in proportion to intensity changes?
• Broadband cable operators provide customers with HSD connections to the Internet through which standard?
• When is it recommended to use the back-pull method during fiber-optic cable installations?
• What is the current standardization for the outside diameter (OD) of the cladding in single-mode fiber?
• Why are laser diodes most effective when coupled to single-mode fiber (SMF)?
• What does "cable management" refer to in fiber optic installation?
• What does "light source stability" refer to?
• Which two methods are widely accepted for pulling fiber-optic cable off a cable reel in an aerial installation?
• What can a centralized power node provide for a fiber-optic node?
• How do technicians determine the specific type of single-mode fiber (SMF) used in a project?
• What do diameter differences between spliced fibers indicate on an OTDR?
• If the optical power into an optical receiver is too high but within the loss budget, what should be done to optimize it?
• What should be avoided to maintain the integrity of optical connectors?
• What does the term "launch cable" refer to?
• What advantage does a digital return system provide?
• How does the cable jetting installation method differ from other methods of installing fiber-optic cable?
• What is the primary goal of the DOCSIS provisioning of EPON (DPoE)?
• Before digital modulation can occur in an optical transmitter, what process must take place?
• Besides protection, what additional function must the coating on an optical fiber perform?
• What is the typical slack cable length used in an aerial installation?
• What does a loose-tube fiber optic cable primarily protect against?
• Which type of optical fiber is more flexible and easier to install?
• Which of the following best describes how the signal is transported through the network without following the physical path requirements of the peripherals?
• Which type of network topology allows troubleshooting a problem or switching around the problem to be accomplished easily from the central hub?
• In what type of installation is wide wavelength division multiplexing (WWDM) used?
• Which characteristic of fiber optic cables helps in maintaining signal quality?
• What is a "fiber optic transceiver"?
• Which are common types of fiber optic connectors?
• For a 10G-EPON architecture with a downstream speed of 10 Gbps, what two upstream rates are supported?
• What is one of the key components of an optical transmitter?
• Which items should be indicated on a route map for network access considerations?
• Which type of fiber-optic cable offers stable transport characteristics and enhanced protection against bending?
• Why are backup AC generators included in many commercial AC UPS and DC power systems?
• Which fiber-optic cable design category typically uses some star topology?
• What is the ideal method for a broadband cable network designer to replace coaxial cable with fiber-optic cable?
• What is digital modulation?
• What is the potential cost savings achieved by using cable jetting instead of conventional pulling techniques?
• How can water ingress affect fiber optic cables?
• Which component of a PON includes a downstream optical transmitter and an upstream receiver?
• What does "attenuation" refer to in fiber optics?
• Which statement is true regarding offline UPS systems?
• Which type of network topology has been focused primarily on alternative routing around cities and industrial areas?
• What is the primary purpose of a fiber optic connector?
• What is the maximum upstream data rate supported by the XG-PON access architecture?
• Why do most broadband cable networks use analog modulation downstream instead of digital modulation?
• What is a necessary condition to ensure when pulling fiber-optic cable using the intermediate pull method?
• Which type of single-mode fiber is ideal for fiber to the home (FTTH) installations?
• What does "wavelength division multiplexing" (WDM) achieve?
• What is a common tool used to test fiber optic connections?
• Why is as-built documentation important when troubleshooting an optical network outage?
• What is the use of a "fiber optic splitter"?
• What type of protective layer is typically found around fiber optic cables?
• What should be done to ensure the integrity of a fiber optic connection?
• What is the main outcome of effective fiber optic testing?
• What is the function of an optical amplifier in a fiber optic system?
• Which standards organization is considered the creator of the world's most recognized communications standards, known as recommendations?
• What does the term "optical path" refer to in fiber optics?
• Which topology consists of a host element connected to two or more receiving elements through a splitter or optical coupler?
• What is the significance of using -48 VDC with a positive ground in telecommunications?
• What is one of the primary advantages of using fiber-optic cable over coaxial cable?
• Which requirement is identified for Next-generation access (NGA) network architectures?
• Which access architecture type replaced the Asynchronous Passive Optical Network (APON)?
• Which franchise agreement stipulation might impact network design significantly?
• What is cable pulling tension and why is it significant?
• What is a significant advantage of using fiber optic cables?
• What is the role of a "coupler" in fiber optics?
• What type of fiber-to-the-x (FTTx) topology does a passive optical network (PON) use to make a P2MP fiber-optic cable connection between the broadband cable headend and the customer premises?
• Which component of an optical modulation system contains an optical detector and a demodulator?
• What two elements align optical fibers in a connection?
• Which of the following devices acts as a patch panel, splice panel, and optical splitter in a pedestal installation?
• Coarse wavelength division multiplexing (CWDM) applications were expanded to include use in which band?
• What is typically used to clean the end of fiber optic cables?
• Which of the following is a typical fiber testing method?
• Why is a fiber optic patch panel important?
• What is the minimum amount of slack that should be provided for splicing fiber-optic cable in underground installations?
• What is a characteristic of online uninterruptible power supply (UPS) systems?
• What is the minimum clearance needed between the power's secondary conductor and a fiber-optic cable in a cable span?
• What is the most common test method for measuring fiber optic loss?
• When installing aerial fiber-optic cable using the back-pull method, how should the trailer be positioned?
• What component is responsible for converting digital modulation light waves to an electrical signal in a digital optical network?
• What factor is critical when selecting fibers for an installation?
• What role does a laser play in fiber optic communication?
• What is the primary goal of securing fiber-optic cables at coaxial cable expansion loops?
• What does "OTDR" stand for?
• How can you ensure the longevity of fiber installations?
• Which diode is most commonly used in optical receivers because it is inexpensive and can be operated from a standard power supply?
• What does "modal dispersion" refer to in fiber optics?
• What is the purpose of a fiber access terminal (FAT) in an installation?
• Which of the following best describes insertion loss testing?
• How does Radio Frequency over Glass (RFoG) facilitate a transition from legacy HFC architecture?
• What is an effective option for a broadband cable network to enhance its optical fiber resources?
• What is a significant requirement when using ribbon fiber for installations?
• In a PON, which category of fiber-optic cable is routed from the headend into the optical distribution network (ODN)?
• Which of the following is the ratio of electrical output power from the detector to the optical input power, expressed by amperes or volts per watt of optical input power?
• What is a primary safety concern when installing aerial fiber-optic cables between poles?
• What does the term 'attenuation' refer to in fiber-optic technology?
• What are the two main types of optical cables?
• How is light guided along the core of a fiber?
• What is splicing in fiber optics?
• What is the primary advantage of using multi-mode fiber over single-mode fiber for short distances?
• What is the upstream wavelength range used by EPON?
• What is a common equipment used in OTDR testing?
• What is "optical power budget"?
• What essential information should always be included in the documentation of a fiber-optic network?
• In underground installations, which methods help maintain proper pulling tension?
• How do you identify a fault in a fiber optic cable?
• How does temperature impact fiber optic performance?
• What is the ideal method for setting RF power levels for a QAM carrier?
• What wavelength range is used for video distribution in broadband PON access systems?
• What is a characteristic of splice closures in fiber-optic installations?
• What is "return loss" in fiber optics?
• What is a true statement about pigtails used for optical fiber terminations?
• Why do many optical nodes accept two independent power supplies?
• What is the term for a fiber optic cable that is specifically designed for outdoor use?
• What is considered the more accurate and technically correct measurement of the optical transport region of single-mode fiber?
• Which DOCSIS-based product defines the protocols for IP telephony over HFC networks?
• What are key factors affecting fiber optic installation?
• What is required for testing the installation of fiber optic cables?
• What is the main purpose of using a splice tray?
• Why is it important to use proper cleaning methods for fiber optic connectors?
• What is a common challenge when integrating fiber-optic technology into existing networks?
• Which topology allows a smaller number of RF amplifiers between the optical fiber and the customer premises?
• What is the recommended maximum bend radius for fiber optic cables?
• What is the difference between single-mode and multi-mode fiber?
• What is the significance of "core-cladding" structure in fiber optics?
• What is used in outside plant (OSP) fiber optic cable to provide protection and isolation?
• In which component in a fiber-optics communication system do changes to the intensity of the optical signal occur?
• Which type of optical coupler is known for providing the least amount of insertion loss?
• What does the SONET transmission standard define?
• What type of connector is commonly used for high-density applications?
• What are the main components of an optical receiver?
• Which statement is true about optical nodes?
• What is the best practice for storing fiber optic cables?
• How does a centralized server VOD architecture simplify server management?
• Which of the following statements about forward error correction (FEC) is true?
• What is an essential aspect of fiber installation?
• What environmental condition can impact fiber optic performance?
• For what purpose is a fiber optic cable tester used?
• What is typically the first action taken when adjusting an optical receiver?
• In aerial installations, what should be done at the expansion loops of coaxial cable when installing fiber-optic cable?
• What distinguishes "fusion splicing" from "mechanical splicing"?
• What is one element used in the transmission and reception of dense wavelength division multiplexing (DWDM)?
• What is the recommended method to remove surface particulates from optical connectors?
• What property of fiber-optic cable allows for fast pulling or blowing into flexible conduits?
• What is the typical wavelength range for laser sources utilized in fiber optics?
• What architecture was developed to provide a cost-effective, high-bandwidth solution for public internet connectivity?
• What type of light source is commonly used in fiber optics?
• When working on a ladder, what is considered a best practice?
• What is the purpose of a fiber optic patch panel?
• What is involved when monitoring the status of optical nodes?
• Why was the zero-dispersion point in single-mode fiber moved to 1,550 nm?
• What type of LED has relatively narrow spectral widths, high output power levels, and performs at high modulation rates?
• In a DOCSIS 3.1 CMTS, what is true?
• What can excessive cable pulling tension lead to?
• What is the typical core diameter of single-mode fiber?
• What type of testing helps verify the overall performance of fiber optic systems?
• Which condition indicates that an intermediate pull may be necessary during installation?
• What determines the number of rectifiers used in a DC power plant design?
• Which device is classified as a passive component that performs both optical splitting and combining?
• What is the main factor in determining the sensitivity of an optical receiver?
• What is a major concern regarding RFoG and FTTx systems?
• Which of the following practices helps prevent damage during fiber optic installation?
• What is "chromatic dispersion" in fiber optics?
• For networks with data rates higher than what threshold are F-P lasers considered inadequate?
• What is a common challenge when installing fiber optic cables?
• Where in a fiber-optic network would you expect Fresnel reflections to occur?
• What are the two main categories of loss in fiber optics?
• When should the intermediate pull technique be utilized during fiber-optic cable installation in conduit?
• Why are fiber optic systems immune to electromagnetic interference?
• What does proper labeling of fibers mainly aim to achieve?
• What does "fiber termination" refer to?
• What benefit does leasing spare fibers provide to a broadband network?
• What is the primary purpose of fiber optic cables in telecommunications?
• Which advantage is often attributed to fiber optic cables compared to traditional copper cables?
• What type of fiber optic cable is typically used for long-distance communication?
• During which acceptance-testing stage do adjustments to attenuation levels typically occur?
• What type of map contains essential information regarding nodes in a network?
• Which of the following is a benefit of using the cable jetting method?
• Which type of PON topology places the optical splitters at the headend and then routes them to each customer premises?
• What is the purpose of using a fiber optic diode?
• What does "loopback testing" involve?
• What does the term "insertion loss" refer to?