Description : Two layers of arimid yarn strength members encase the OFCC units. Why are these strength members stranded in opposing directions?
Last Answer : To minimize microbending of the fibers.
Description : Describe an optical fiber cable component (OFCC).
Last Answer : OFCCs are tight-buffer fiber surrounded by arimid yarn and a low-halogen outer jacket.
Description : When is an optical power meter measurement recommended for conducting field measurements on installed optical fiber cables or cable plants?
Last Answer : When an installed optical fiber cable or cable plant is less than 50 meters in length.
Description : What is the main disadvantage of using fiber-optic cables?
Last Answer : High attenuation.
Description : Electric cables are formed of stranded wire to ____________. A. increase the current carrying capability for a given size wire B. increase their flexibility C. decrease the weight for a given size wire D. assure good conductivity at junction points
Last Answer : Answer: B
Description : What are the advantages of stranded cables?
Last Answer : a. It gives flexibility. b. It prevents skin effect. c. Increases current carrying capacity. d. It provides easy in soldering joint. e. If one strand breaks the other will carry the load current.
Description : Fiber optic connectors can reduce system performance by increasing what two types of noise?
Last Answer : Modal and reflection.
Description : What multimode graded-index fiber offers the best overall performance for most applications?
Last Answer : 62.5/125 mm multimode graded-index fiber.
Description : Where is the worst place you've ever been stranded?
Last Answer : I'm lucky enough to have not been stranded anywhere, unless I count my deployment stuck in the atlantic and med oceans lol. Although once some friends and I were stranded at a party with teens and there ... ride left so we said screw it and walked. There was no way I was getting caught there lol.
Description : A waveguide bend must have what minimum radius?
Last Answer : Greater than 2 wavelengths.
Description : Why does fiber optic cables transmit light?
Last Answer : bc it does
Description : Who do I call when I cut buried fiber optic cables?
Last Answer : You can call the company that installed the cables or any company that installs fiber optic cables. It's always a safe bet to call a professional before digging in a area where you think there may be cables buried.
Description : Fiber optic cables operate at frequencies near a. 20MHz b. 200MHz c. 2GHz d. 800THz
Last Answer : d. 800THz
Description : _________uses two fiber-optic cables. A) 100Base-TX B) 100Base-FX C) 100Base-T4 D) none of the above
Last Answer : 100Base-FX
Description : ______ cables carry data signals in the form of light. A) Coaxial B) Fiber-optic C) Twisted-pair D) none of the above
Last Answer : Fiber-opti
Description : ______ cables arecomposed ofa glass or plastic inner core surrounded by cladding, allencasedin an outside jacket. A) Coaxial B) Fiber-optic C) Twisted-pair D) none of the above
Last Answer : Fiber-optic
Description : The physical layer provides __________ a. mechanical specifications of electrical connectors and cables b. electrical specification of transmission line signal level c. specification for IR over optical fiber d. all of the mentioned
Last Answer : d. all of the mentioned
Description : The physical layer provides __________ A. mechanical specifications of electrical connectors and cables B. electrical specification of transmission line signal level C. specification for IR over optical fiber D. all of the mentioned
Last Answer : D. all of the mentioned
Description : The physical layer provides __________ a) mechanical specifications of electrical connectors and cables b) electrical specification of transmission line signal level c) specification for IR over optical fiber d) all of the mentioned
Last Answer : d) all of the mentioned
Description : ……cables are composed of a glass or plastic inner core surrounded by cladding,all encased in an outside jacket. a. Fiber-optic b. Coaxial c. Shield Twisted Pair d. Unshield Twisted-pair
Last Answer : a. Fiber-optic
Description : It is analogous to power dissipation to copper cables, impurities in the fiber absorb the light and covert it to heat. ∙ A. power loss ∙ B. absorption loss ∙ C. resistive loss ∙ D. heat loss
Last Answer : B. absorption loss
Description : Fiber-optic cables with attenuation of 1.8, 3.4, 5.9 and 18 dB are linked together. The total loss is ∙ A. 7.5 dB ∙ B. 19.8 dB ∙ C. 29.1 dB ∙ D. 650 dB
Last Answer : C. 29.1 dB
Description : They proposed a new communication medium using cladded fiber cables. ∙ A. Kao and Bockham ∙ B. Maiman, Kao and Bockham ∙ C. Kapron, Keck and Maurer ∙ D. Maiman and Schawlow
Last Answer : ∙ A. Kao and Bockham
Description : They were granted patents for scanning and transmitting television images through uncoated fiber cables. ∙ A. Baird and Hansel ∙ B. Bockham and Kao ∙ C. Kapron and Keck
Last Answer : A. Baird and Hansel
Description : Fiber-optic cables with attenuations of 1.8, 3.4, 5.9, and 18 dB are linked together. The total loss is ∙ a. 7.5 dB ∙ b. 19.8 dB ∙ c. 29.1 dB ∙ d. 650 dB
Last Answer : ∙ c. 29.1 dB
Description : Fiber optic cables operate at frequencies near ∙ a. 20 MHz ∙ b. 200 MHz ∙ c. 2G Hz ∙ d. 800 THz
Last Answer : ∙ d. 800 THz
Description : The use of solitons on fiber-optic cables is: a. common b. experimental c. obsolete d. not possible
Last Answer : b. experimental
Description : Fiber-optic cables do not: a. carry current b. cause crosstalk c. generate EMI d. all of the above
Last Answer : d. all of the above
Description : It is analogous to power dissipation to copper cables, impurities in the fiber absorb the light and covert it to heaT
Last Answer : absorption loss
Description : They were granted patents for scanning and transmitting television images through uncoated fiber cables
Last Answer : Baird and Hansel
Description : They proposed a new communication medium using cladded fiber cables.
Last Answer : Kao and Bockham
Description : What precautions should you take when tying bundles containing coaxial cables?
Last Answer : Do not tie too tightly and use the proper type of tape.
Description : Why are splices staggered on multiconductor cables?
Last Answer : To prevent the joint from being bulky.
Description : Why must cables and wires be identified?
Last Answer : To provide the technician with a means to trace the wires when troubleshooting and repairing electrical and electronic systems.
Description : Optical fibers or cables should never be bent at a radius of curvature smaller than a certain value. Identify this radius of curvature
Last Answer : Minimum bend radius.
Description : What are the three types of lead-sheathed cables?
Last Answer : Alloy lead, pure lead, and reinforced lead.
Description : What is the most common type of nonmetallic material used to protect wires and cables?
Last Answer : Fibrous Braid.
Description : What instrument is used for measuring the insulation resistance of cables?
Last Answer : Megohmmeter (megger).
Description : Modes of a light pulse that enter the fiber at one time exit the fiber at different times. This condition causes the light pulse to spread. What is this condition called?
Last Answer : Modal dispersion.
Description : Which one of the following statements is not true of RNA? a. RNA contains the monosaccharide ribose. b. RNA is primarily a single-stranded molecule. c. RNA has a sugar-phosphate backbone. d. RNA contains five different nucleotides.
Last Answer : d. RNA contains five different nucleotides.
Description : Why is one side of the river bend different to the other?
Last Answer : when a river rounds a bend, its velocity increases on the outside of the curve. Its velocity slows on the inside part of the curve, so sediments tend to be deposited there.Discharge and velocity increase during a flood, then decrease as flood waters subside.
Description : Which type of optical splitter (Y-coupler or T-coupler) splits only a small amount of power from the input fiber to one of the output fibers?
Last Answer : T-coupler
Description : What is the difference between passive and active fiber optic couplers?
Last Answer : Passive couplers redistribute optical signals without optical-to electrical conversion.
Description : The Navy classifies fiber optic connectors in what two ways?
Last Answer : Light-duty and heavy-duty connectors.
Description : Is coupling loss from fiber separation and lateral misalignment more critical in expanded-beam or butt-jointed connectors?
Last Answer : Butt-jointed connectors.
Description : Which type of fiber optic connector (butt-jointed or expanded beam) brings the prepared ends of two optical fibers into close contact?
Description : Does coupling loss from refractive index profile difference result when the receiving fiber has a larger profile parameter
Last Answer : Fiber alignment.
Description : List six types of fiber mismatches.
Last Answer : Core diameter mismatch, cladding diameter mismatch, core ellipticity, core and cladding concentricity differences, NA mismatch, and refractive index profile differences.
Description : Using a standard microscope to inspect a fiber-end face, you observe that all parts of the fiberend face are in focus at the same time. Is the fiber-end face flat, concave, or convex?
Last Answer : Flat.
Description : What is the basic fiber cleaving technique for preparing optical fibers for coupling?
Last Answer : Score-and-break.