Study with 4A0-265 Actual Test Questions
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Updated: Sep 19, 2026
No. of Questions: 40 Questions & Answers with Testing Engine
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Nokia 4A0-265 Exam Overview:
| Certification Vendor: | Nokia |
|---|---|
| Exam Name: | Nokia Optical Diagnostics and Troubleshooting |
| Exam Number: | 4A0-265 |
| Exam Format: | Multiple Choice, Scenario-based |
| Certificate Validity Period: | 3 years |
| Passing Score: | 70% |
| Exam Price: | 125 USD |
| Available Languages: | English |
| Related Certifications: | Nokia Certified Optical Network Architect Nokia Advanced Optical Network Design Expert |
| Exam Duration: | 90 minutes |
| Real Exam Qty: | 40 |
| Recommended Training: | Optical Diagnostics and Troubleshooting (TOP00007) |
| Exam Registration: | Nokia Exam Registration |
| Sample Questions: | Nokia 4A0-265 Sample Questions |
| Exam Way: | Online proctored or onsite at authorized test centers |
| Pre Condition: | No mandatory prerequisites; recommended knowledge of optical networking principles and Nokia 1830 PSS systems |
| Official Syllabus URL: | https://www.nokia.com/networks/training/onc/exams/optical-diagnostics-troubleshooting/ |
Nokia 4A0-265 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Transponder and System Fault Resolution | 20% | - Service restoration
|
| Topic 2: Optical Network Architecture and Signal Flow | 25% | - 1830 PSS node architecture
|
| Topic 3: Troubleshooting Methodologies | 30% | - Alarm and condition interpretation
|
| Topic 4: Optical Diagnostics and Monitoring Tools | 25% | - Performance Monitoring (PM) data analysis
|
Nokia Optical Diagnostics and Troubleshooting Sample Questions:
Which of the following statements about 1-Day PMs is TRUE?
- A. 1-Day PMs show measurements collected since the beginning of the current day. Up to 33 bins are available for data storing.
- B. 1-Day PMs show measurements collected over the preceding 24 hours. Up to 33 bins are available for data storing.
- C. 1-Day PMs show measurements collected since the beginning of the current day. Up to 8 bins are available for data storing.
- D. 1-Day PMs show measurements collected over the preceding 24 hours. Up to 8 bins are available for data storing.
Correct Answer: D 🗳️
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A power adjustment has succeeded conditionally because of gain settings set to higher levels than expected by design. Which of the following alarms will raise?
- A. Amplifier Gain Tilt Adjustments Suspended (PWRTILTSUSP)
- B. Gain Adjustment Exceeded Max Value (PWRMAXGAIN)
- C. Power Adjustment Failure (PWRADJFAIL)
- D. Invalid topology (PRCDRERR-TOPO)
Correct Answer: A 🗳️
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What is the default severity level for a Threshold Crossing Alert (TCA) alarm?
- A. Warning
- B. Major
- C. Minor
- D. Critical
Correct Answer: A 🗳️
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Consider the exhibit.
Which type of loopback is applied?
- A. Client port terminal Ioopback
- B. Line port facility Ioopback
- C. Line port terminal Ioopback
- D. Client port facility loopback
Correct Answer: A 🗳️
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