D-TECH – Fiber Technician Skill Test
For technicians, engineers, and trainees to test deep fiber-optic knowledge.
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1. Fusion Splicer – Core to Core Alignment Technology
Which motor configuration is used in TRUE core-to-core alignment splicers?
1. 4 Motors
2. 6 Motors
3. 2 Motors
2. Active Alignment (Active Alignment) Splicers
Which motor configuration is MOST COMMON for Active-alignment type splicers?
1. 3 Motors
2. 4 Motors
3. 6 Motors
4. 1 Motor + 1 Fixed Clamp
3. Cladding-to-Cladding Machines – Motor Options
Which motor configurations exist for cladding-alignment machines?
1. 2 Motors
2. 4 Motors
3. 6 Motors
4. Only 2 motors
5. 2 or 4 motors depending on brand
4. Fusion Splicer – What Layer is Actually Melted?
A fusion splicer welds optical fibers by aligning and melting their:
1. Coating Layer
2. Core Layer
3. Cladding Layer
4. Core + Cladding Layer
5. Coating + Cladding only
5. Common Splice Sleeve Sizes
Which splice protection sleeve sizes are commonly used in the field?
1. 40 mm
2. 45 mm
3. 60 mm
4. All of the above
5. Only 60 mm is correct
6. Why Do Splicer Batteries Get Damaged?
1. Leaving it uncharged for long time
2. Charging overnight every day
3. Using until 0% discharge
4. All of the options are wrong
5. All of the options are correct
7. Typical Electrode Life Count
What is the typical electrode life for most standard fusion splicers?
1. 2000
2. 3,500
3. 4,500
4. 5,600
5. 10,000
6. None of the above
8. Causes of High Splice Loss
Which can cause high splice loss?
1. Cleaver angle bad
2. Electrode life expired
3. Fiber not cleaned
4. ARC power too high
5. Lens dirty
6. Wrong cleave length
7. Wrong fiber type (SMF/MMF mismatch)
8. All are correct
9. None are correct
9. Cleaver Not Cutting Fiber – Reasons
1. Blade is dull
2. Blade not rotated
3. Fiber grip dirty
4. Fiber inserted too deep or too short
5. All are correct
6. None are correct
10. Power Meter Shows Wrong Reading Because:
1. Reference (Zero dB) not set
2. Dirty connector
3. Wrong wavelength selected (1310 instead of 1550)
4. Fiber broken
5. Loose adapter
6. All of the above
7. None of them
11. Typical SMF Loss at 1310 nm in Single mode Fiber cable.
1. 0.25 dB/km
2. 0.35 dB/km
3. 0.18 dB/km
4. Depends on G.652 vs G.657
12. Typical SMF Loss at 1550 nm in Single mode Fiber cable
1. 0.25 dB/km
2. 0.35 dB/km
3. 0.20 dB/km
13. Which One Is Single-Mode Fiber?
1. OS
2. MM
3. G.651
4. G.655 (NZDSF)
14. Single-Mode Fiber Is Used For:
1. Long Distance
2. Short Distance
3. PON only
4. One building to another
15. Multimode Fiber Is Used For:
1. Above 500M
2. Short distance
3. Long distance
4. Both
16. Which Connector Gives Better Return Loss?
1. APC
2. UPC
3. XPC
17. Checking an OTDR – What Is Important?
1. Dynamic Range
2. Total distance of Fiber cable
18. OTDR Is Used For:
1. Fault location
2. Total distance
3. Splice loss measurement
4. Connector loss
5. Bend loss
6. All of the above
7. None of them
19. How to Keep Optical Power Meter Safe?
1. Use and keep
2. Use and never clean
3. Clean before use
4. Clean before and after use
5. Keep without cap
20. Testing Equipment Can Be Damaged By:
1. Dust
2. Water
3. ARC power
4. VFL red light
5. Dust + Water
22. Which Device Gives RED LIGHT?
1. OTDR,
2. OPM
3. VFL