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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Performance Troubleshooting | 20-25% | - Root cause analysis methodologies - Optimization case studies - Network failure identification and resolution - Common performance issues diagnosis - Troubleshooting tools utilization |
| Topic 2: Radio Network Optimization Techniques | 25-30% | - Load balancing techniques - Interference analysis and mitigation - Capacity optimization strategies - Handover optimization - Parameter tuning best practices - Coverage optimization methods |
| Topic 3: SRAN Architecture and Fundamentals | 15-20% | - Radio access concepts and principles - SRAN solution components and functions - SRAN network architecture overview - Single RAN integration principles |
| Topic 4: SRAN Optimization Tools and Reports | 10-15% | - Nokia NetAct and performance tools - Report generation and interpretation - Automated optimization features - Configuration management for optimization |
| Topic 5: Radio Network Performance Monitoring | 20-25% | - Threshold configuration and alerting - Performance data collection and analysis - Performance monitoring tools and dashboards - KPI definition and measurement - Real-time network monitoring techniques |
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NEW QUESTION # 23
What is the role of admission control in 5G networks ?
Answer: B
NEW QUESTION # 24
Which of the following statements about CBRA , or contention-based random access , is correct?
Answer: C
Explanation:
The correct answer is B .
In contention-based random access , the UE chooses a random access preamble by itself from a configured pool of available contention-based preambles. This is typically used when the UE does not yet have a dedicated connection or when the network has not assigned a dedicated preamble.
Because multiple UEs may choose the same preamble at the same time, preamble collision is possible . That is why CBRA requires a contention resolution step.
Option C describes contention-free random access , not CBRA. In contention-free random access, the network assigns a dedicated preamble to the UE, so collision risk is avoided and contention resolution is not required.
Option A is not the correct CBRA principle being tested. RACH false detection can be a receiver/design issue, but it does not define the CBRA procedure.
Option D describes a possible NSA signaling behavior around access failure handling, but it is not the core correct definition of CBRA.
Therefore, the correct CBRA statement is:
The UE autonomously selects a preamble from the configured range and starts the random access procedure.
NEW QUESTION # 25
A customer complains about coverage reduction after modernization of 4G TDD 4x4 sites to Concurrent mMIMO B41/n41 with AEHC module 64T64R . Which of the following statements regarding RF design changes to increase the coverage is correct?
Answer: A
Explanation:
The correct answer is C .
In a Concurrent mMIMO B41/n41 AEHC 64T64R deployment, LTE and NR share the same Massive MIMO active antenna system. Public Nokia material identifies AEHC as an AirScale Massive MIMO
64T64R B41 radio product, and Nokia's AirScale Massive MIMO portfolio is designed for high-capacity 5G
/RAN deployments.
Unlike a passive antenna system where coverage is changed mainly by physical/electrical RET, Massive MIMO coverage is strongly influenced by beamforming profiles and beamforming weight parameters . In concurrent LTE/NR operation, the RF design must consider the shared active antenna behavior, not independent passive RET-style tilt control per technology.
Therefore, for concurrent 4G/5G mMIMO coverage adjustment, the correct statement is:
The tilt/coverage behavior for both 4G and 5G is controlled by mMIMOSecSectorBFProfName and beamforming weight profile parameters.
NEW QUESTION # 26
When selecting an LTE anchor layer for EN-DC , why is it important to check 3GPP band combinations ?
Answer: D
Explanation:
The correct answer is B .
In 5G NSA EN-DC , the UE connects to LTE as the Master Cell Group , or anchor, and NR as the Secondary Cell Group . Not every LTE band can be paired with every NR band. The supported LTE-NR combinations are defined by 3GPP band-combination rules and must also be supported by the UE chipset and device capability.
For example, an operator may have LTE Band 3, Band 7, or Band 20 and NR n78, but only certain LTE-NR combinations may be valid for EN-DC. If the selected LTE anchor band is not supported in combination with the NR band, the UE will not be able to establish EN-DC even if LTE and NR coverage both exist.
Option C is not correct because dual-uplink support depends on UE capability and specific band-combination support; it cannot be guaranteed for all UE models. Option A and D are unrelated to the main purpose of checking 3GPP band combinations.
So the correct reason is:
To ensure that LTE and NR bands are compatible and allowed as EN-DC pairs.
NEW QUESTION # 27
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?
Answer: B
Explanation:
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% .
NEW QUESTION # 28
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