Prepare with Nokia 4A0-265 exam torrent, pass for sure
Updated: Jul 13, 2026
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Nokia Optical Diagnostics and Troubleshooting Sample Questions:
1. 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 = 4
(ii) number of service affecting alarms = 14
(iii) number of conditions = 2
B) (i) total number of alarms = 7
(ii) number of service affecting alarms = 5
(Hi) number of conditions = 7
C) (I) total number of alarms = 5
(ii) number of serviceaffectingalarms = 2
(Hi) number of conditions = 14
D) (i) total number of alarms = 2
(ii) number of service affecting alarms = 2
(Hi) number of conditions = 18
2. Which of the following statements about optical power vs amplification stages is TRUE?
A) When multiple channels pass through a shared port (for example, an amplifier line interface), the total aggregated power reflects the number of channels currently present.
B) The Optical Supervisory Channel (OSC) is amplified when passing through all amplifier types, except for Raman which is not based on EDFA.
C) Ingress amplifiers are always more powerful [than egress amplifiers, to reduce the impact of non-linear effects.
D) When channels pass through amplifiers, all of them always experience a similar amplification.
3. Which of the following correctly describes how a unidirectional amplification stage works?
A) * Incoming optical signals are boosted by the ingress amplifier.
* Outgoing optical signals pass through the ingress amplifier but are not boosted.
B) * Incoming optical signals are boosted by the ingress amplifier.
* Outgoing optical signals do not pass through the ingress amplifier.
C) * Incoming optical signals are boosted by the ingress amplifier.
* Outgoing optical signals are also boosted by the ingress amplifier.
D) * Incoming optical signals pass through the ingress amplifier but are not boosted.
* Outgoing optical signals are boosted by the ingress amplifier.
4. Which of the following is NOT a characteristic of an Optical Supervisory Channel Loss of Signal (OSC LOS) issue, in case that no "LD Input LOS" alarms are raised against the involved amplifiers?
A) An "Incoming SUPVY LOS" alarm is raised on the local node.
B) Traffic does not pass between the local and adjacent nodes.
C) A "Data Link Down" alarm is raised on the adjacent node.
D) A "Power Adjustment Required" alarm is eventually raised on the local node.
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: A | Question # 3 Answer: B | Question # 4 Answer: A |
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