ETA-I STUDY GUIDE EXAM PREMIUM PREP PACK
2026 FULLY SOLVED MATERIAL
◉ OM3 and OM4 multimode fibers are known as what type of fiber?
Answer: Laser optimized multimode fiber
◉ What are the two most common core and cladding sizes in
multimode fiber? Answer: 62.5/125 um (US); 50/125 um (EU)
◉ What is the buffer size for a fiber used in tight buffered cables?
Answer: 900 um
◉ What jacket color does singlemode fiber have? Answer: Yellow
◉ What are the 12 fiber color codes in order? Answer: Blue, Orange,
Green, Brown, Slate, White, Red, Black, Yellow, Violet, Rose, Aqua
◉ OM1 and OM2 are known as what types of fibers? Answer: Legacy
multimode fibers
◉ Why does graded-index fiber use numerous concentric layers of
glass? Answer: Reduce modal dispersion
, ◉ What is the fiber's cladding bonded to during the assembly
process? Answer: Ferrule connector
◉ A fiber optic cable that is "fire retardant and low smoke" is called
what according to the NEC? Answer: Plenum
◉ What type of fiber has an aqua jacket? Answer: Laser optimized
multimode fiber
◉ What does the gel in a loose tube fiber optic cable protect the
fiber from if the jacket fails? Answer: Protects the fiber from
moisture in outdoor environments
◉ What is OFNR? Answer: Optical Fiber Non-conductive Riser
◉ The NEC considers cables that contain no conductive members as
what type of cable? Answer: Non-conductive cable
◉ What type of cable has optical fibers and current-carrying
electrical conductors in the same jacket? Answer: Composite cable
◉ What is the name of the tight-buffered cable used for indoor
applications? Answer: Distribution cable
2026 FULLY SOLVED MATERIAL
◉ OM3 and OM4 multimode fibers are known as what type of fiber?
Answer: Laser optimized multimode fiber
◉ What are the two most common core and cladding sizes in
multimode fiber? Answer: 62.5/125 um (US); 50/125 um (EU)
◉ What is the buffer size for a fiber used in tight buffered cables?
Answer: 900 um
◉ What jacket color does singlemode fiber have? Answer: Yellow
◉ What are the 12 fiber color codes in order? Answer: Blue, Orange,
Green, Brown, Slate, White, Red, Black, Yellow, Violet, Rose, Aqua
◉ OM1 and OM2 are known as what types of fibers? Answer: Legacy
multimode fibers
◉ Why does graded-index fiber use numerous concentric layers of
glass? Answer: Reduce modal dispersion
, ◉ What is the fiber's cladding bonded to during the assembly
process? Answer: Ferrule connector
◉ A fiber optic cable that is "fire retardant and low smoke" is called
what according to the NEC? Answer: Plenum
◉ What type of fiber has an aqua jacket? Answer: Laser optimized
multimode fiber
◉ What does the gel in a loose tube fiber optic cable protect the
fiber from if the jacket fails? Answer: Protects the fiber from
moisture in outdoor environments
◉ What is OFNR? Answer: Optical Fiber Non-conductive Riser
◉ The NEC considers cables that contain no conductive members as
what type of cable? Answer: Non-conductive cable
◉ What type of cable has optical fibers and current-carrying
electrical conductors in the same jacket? Answer: Composite cable
◉ What is the name of the tight-buffered cable used for indoor
applications? Answer: Distribution cable
