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| Section | Weight | Objectives |
|---|---|---|
| Quality of Service and Resource Management | 15% | - QoS parameters, scheduling and admission control - Radio resource management and optimization |
| Advanced Optimization and SON Features | 10% | - Self-Organizing Networks (SON) use cases and optimization - Energy saving and advanced features |
| SRAN Performance Optimization Fundamentals | 25% | - Performance optimization principles and methodology - Network performance monitoring and analysis tools - Key performance indicators (KPIs) definition and measurement |
| Mobility and Handover Optimization | 20% | - Inter-RAT mobility and optimization - Mobility robustness and optimization - Handover parameters and algorithms |
| Coverage and Capacity Optimization | 30% | - Coverage analysis, tuning and optimization - Capacity planning, load balancing and optimization - Interference analysis and mitigation techniques |
>> SRAN-Radio-Network-Performance-Optimization Tests <<
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23. Frage
What is the mandatory prerequisite to implement DSS , or Dynamic Spectrum Sharing ?
Antwort: B
Begründung:
The correct answer is D .
DSS allows LTE and 5G NR to share the same spectrum dynamically , instead of requiring a separate dedicated NR carrier. Therefore, dedicated NR spectrum is not mandatory. DSS is also not limited to TDD only; it is commonly used in FDD spectrum refarming scenarios as well. Public RAN references describe DSS as a mechanism where LTE and NR coexist in the same frequency band and share spectrum dynamically.
From an SRAN architecture point of view, the mandatory deployment condition is that the radio platform must support LTE and NR coexistence on the same radio resources. That requires RF module sharing or a DSS-capable shared radio configuration.
So the correct prerequisite is:
RF module sharing.
24. Frage
In a 5G cell , the following parameter has been modified: lowLatencyReservation = 15 .
Which percentage of UEs will be reallocated to a higher SR periodicity group whenever the threshold for moving to a higher SR periodicity group is reached?
Antwort: D
Begründung:
The correct answer is C .
In 5G uplink scheduling, SR , or Scheduling Request , is used by the UE to request uplink resources when it has data to send. SR periodicity affects uplink latency and PUCCH capacity: shorter SR periodicity gives lower latency but consumes more control-channel resources, while longer SR periodicity saves resources but increases delay.
The parameter lowLatencyReservation = 15 means 15% of the UE/resource share is reserved for the low- latency SR periodicity group. When the load threshold is reached, the remaining portion can be moved to a higher SR periodicity group.
Calculation:
100% # 15% = 85%
So the percentage of UEs that can be reallocated to a higher SR periodicity group is:
0.85 , or 85% .
25. Frage
Consider that the UE is performing handover from LTE to NR with the help of features CB007742 / CB008731 . Referring to the picture below, at what stage can the handover be triggered from LTE to NR?
Antwort: C
Begründung:
The correct answer is C: From Stage 3 .
In LTE-to-NR mobility, the handover or redirection decision is normally based on a combination of:
LTE serving-cell signal level becoming weak enough, and
NR neighbor-cell signal level becoming strong enough.
From the diagram:
In Stage 1 , LTE is still good and NR is still weak, so LTE-to-NR HO should not be triggered.
In Stage 2 , the NR neighbor signal is improving, but the required combined LTE/NR mobility condition is not yet fully satisfied.
In Stage 3 , the NR neighbor signal has crossed the required NR threshold, while the LTE serving-cell signal has degraded enough to justify moving the UE from LTE to NR. This is the first valid stage where LTE-to- NR HO can be triggered.
In Stage 4 , NR is already clearly strong, but the handover could already have been triggered earlier in Stage 3.
26. Frage
In a high-mobility network, the maximum cell size must be restricted to 33 km . Which PRACH format and restricted-set type should be used?
Antwort: B
Begründung:
The correct answer is Format 1 / Type B .
For PRACH planning, the selected preamble format must support the required cell radius. Format 0 is too short for a 33 km cell because it is typically suitable only up to around 14.5 km . Format 2 is also not suitable because its practical maximum cell radius is around 29.5 km , which is below the required 33 km . Therefore, a longer PRACH format is needed.
Because the scenario mentions high mobility , an unrestricted PRACH set is not preferred. High-mobility environments require a restricted set to handle Doppler effects and reduce ambiguity in PRACH preamble detection. Between the restricted-set options, Type B is the correct choice for this 33 km high-mobility case.
A matching Nokia-style question source also lists this exact scenario with Format 1 / Type B as option A.
27. Frage
Which of the following best describes one of the primary purposes of the Coverage and Quality use case?
Antwort: D
Begründung:
The correct answer is B .
The Coverage and Quality use case is used in network planning and optimization to identify RF problem areas. These may include:
Low RSRP or weak coverage areas
Poor SINR or low radio quality areas
High interference zones
Overshooting cells
Coverage holes
Areas where users experience poor throughput or poor accessibility
This type of use case helps NPO engineers prioritize optimization actions such as antenna tilt changes, azimuth changes, parameter tuning, neighbor optimization, power adjustment, or site expansion.
The other options are not the primary purpose:
VPN tunnel configuration is a connectivity/security task.
LCBIN-to-CSV conversion is a data processing task.
Replacing the Kronos parser is a tool-chain or troubleshooting function, not the main purpose of coverage and quality analysis.
So the best answer is:
To identify problem areas such as low coverage or high interference.
28. Frage
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