Purchase Nokia : 4A0-265 Exam Materials and then pass exam easily
Updated: Nov 06, 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: | Scenario-based, Multiple Choice |
| Real Exam Qty: | 40 |
| Exam Price: | 125 USD |
| Certificate Validity Period: | 3 years |
| Related Certifications: | Nokia Advanced Optical Network Design Expert Nokia Certified Optical Network Architect |
| Available Languages: | English |
| Exam Duration: | 90 minutes |
| Passing Score: | 70% |
| 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: Optical Network Architecture and Signal Flow | 25% | - 1830 PSS node architecture
|
| Topic 2: Transponder and System Fault Resolution | 20% | - Optical transponder faults
|
| Topic 3: Optical Diagnostics and Monitoring Tools | 25% | - Nokia management interfaces
|
| Topic 4: Troubleshooting Methodologies | 30% | - Common optical impairments
|
Nokia Optical Diagnostics and Troubleshooting Sample Questions:
What is the typical severity level of a "Loss of Signal" (LOS) alarm?
- A. Critical
- B. Major
- C. Warning
- D. Minor
Correct Answer: A 🗳️
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Which of the following statements best describes the output of the CLI command: show wavekey wtmonitor
1/6/LINE summary?
- A. A list of all channels on this interface for which any Wave Keys pair is being received.
- B. A list of all channels detected against the selected interface, including Wave Keys pair, channel status, expected and measured power, allowed deviation, and tolerance.
- C. A list of all channels detected against the selected interface (in and out); it shows if a Wave Keys pair is expected, if a Wave Keys pair is received, and if the received Wave Keys pair is unexpected.
- D. A list of the unexpected channels detected against the selected interface.
Correct Answer: C 🗳️
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Which of the following CLI commands displays a list of the expected and measured output power for the channels whose admin state is up?
- A. show wavekey wtsource power
- B. config wavekey summary
- C. show wavekey wtsource
- D. config wavekey power detail
Correct Answer: A 🗳️
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Refer to the exhibit, which shows a conditions list from the 1830 PSS GUI. (i) What is the total number of alarms reported? (ii) How many service affecting alarms are displayed? (iii) How many conditions are displayed?
- A. (I) total number of alarms = 5
(ii) number of serviceaffectingalarms = 2
(Hi) number of conditions = 14 - B. (i) total number of alarms = 2
(ii) number of service affecting alarms = 2
(Hi) number of conditions = 18 - C. (i) total number of alarms = 4
(ii) number of service affecting alarms = 14
(iii) number of conditions = 2 - D. (i) total number of alarms = 7
(ii) number of service affecting alarms = 5
(Hi) number of conditions = 7
Correct Answer: D 🗳️
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