The correct answer is A .
During an intra-gNB DU handover , the UE is moved from one cell/DU resource to another under the same gNB-CU control. The gNB-CU coordinates the handover preparation and sends an RRC Reconfiguration message to the UE.
The role of this message is to provide the UE with the required handover command information, such as:
Target PCell configuration
Radio resource configuration
Mobility control information
Random access configuration, when needed
Measurement or reconfiguration-related information
After receiving the RRC Reconfiguration , the UE performs the handover execution procedure toward the target cell and later responds with RRC Reconfiguration Complete .
Option B is incorrect because admission control and source-cell scheduling suspension are internal network- side procedures, not the UE-facing role of the RRC Reconfiguration message.
Option C is not the best answer because user-plane resource transfer is handled between gNB-CU/gNB-DU functions, while dedicated preamble allocation may be part of the configuration but is not the main purpose of the message.
Option D is incorrect because RLC reestablishment and PDCP recovery are lower-layer/user-plane handling actions, not the primary purpose of the RRC Reconfiguration message.
Therefore, the correct role is:
It instructs the UE to perform handover to the target PCell and provides measurement/configuration information.

The correct answer is B .
The prachConfigurationIndex defines the PRACH configuration, including the PRACH time-domain occasions and the associated PRACH format according to the PRACH configuration tables. In 5G NR, PRACH configuration is based on 3GPP-defined PRACH tables, where the configuration index maps to the PRACH format and PRACH occasion structure.
The other options have different meanings:
A). msg1-FrequencyStart defines the frequency-domain starting position of PRACH occasion resources.
C). prachRootSequenceIndex defines the root sequence used for PRACH preamble generation.
D). totalNumberOfRAPreambles defines how many random access preambles are available.
Therefore, the parameter that defines the PRACH format is:
prachConfigurationIndex.

The correct answer is D: A, B, C, and D .
In 5G network slicing, S-NSSAI identifies a single network slice. It is composed of:
SST , or Slice/Service Type
SD , or Slice Differentiator
Statement A is correct.
The combination of SST + SD can uniquely identify a slice. For example, two slices may both use SST 1 for eMBB/MBB-type service, but different SD values can separate them for different enterprises, tenants, or service groups.
Statement B is correct.
SST is mandatory. It is an 8-bit numeric field that indicates the expected slice/service behavior, such as eMBB, URLLC, or mMTC.
Statement C is correct.
SD is optional. It is a 24-bit field used to differentiate multiple slices that may share the same SST.
Statement D is correct.
SST may use standardized values, such as SST 1 for eMBB, SST 2 for URLLC, and SST 3 for mMTC/MIoT.
It may also use operator-specific or non-standardized values depending on deployment requirements.

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.

The correct answer is B .
The connection from TraceSynthesis to NetAct is typically based on secure web/API communication, which uses HTTPS . The standard HTTPS port is 443 . Therefore, port 443 must be opened in NetAct/firewall rules to allow TraceSynthesis to communicate with NetAct.
The other options are not the best answer:
8443 is often used as an alternative HTTPS/application-server port, but it is not the standard answer here.
22 is used for SSH, mainly for secure shell access or file transfer.
8080 is commonly used for unsecured HTTP or proxy/application access, not the secure NetAct connection expected here.
So the required port is:
443.

The correct answer is B .
Beamforming is mainly about shaping and directing radio energy toward a UE or a target area. It improves coverage, SINR, and cell-edge performance by focusing the transmitted or received signal in a specific direction.
MIMO , or Multiple Input Multiple Output , uses multiple antenna paths to improve throughput, reliability, and spectral efficiency. MIMO can be used for spatial multiplexing, diversity, or beamforming depending on the antenna system and radio configuration.
Option A is incorrect because beamforming and MIMO are related but not the same.
Option C reverses the definitions.
Option D is incorrect because beamforming and MIMO are commonly used together, especially in Massive MIMO systems.
So the correct statement is:
Beamforming focuses on directing the signal, while MIMO focuses on utilizing multiple paths for data transmission.

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.

The correct answer is B .
In 5G network slicing, SST means Slice/Service Type . It identifies the high-level service category of a network slice.
Typical standardized SST values are:
SST = 1 # eMBB, enhanced Mobile Broadband
SST = 2 # URLLC, Ultra-Reliable Low-Latency Communication
SST = 3 # MIoT/mMTC, Massive IoT or massive Machine Type Communication
SST = 4 # V2X-related slice type
“Extreme Broadband” is normally aligned with eMBB , because it refers to high data rate, high capacity, and broadband user experience.
Therefore, the SST value for Extreme Broadband is:
1.

The correct answer is D.
The feature is focused on improving VoNR link robustness and user experience, especially near the cell edge or in difficult RF conditions. VoNR is sensitive to packet loss, delay, and uplink coverage limitations.
Therefore, link-budget improvement features commonly target BLER behavior, transport block sizing, and MCS robustness.
Statement A is correct because minimizing Packet Loss Rate, or PLR, directly improves VoNR speech quality and reduces mute, clipping, or robotic voice effects.
Statement B is correct because VoNR bearers can use specific initial BLER targets. A more suitable BLER target helps the scheduler choose a more robust MCS for voice traffic.
Statement C is correct because a configurable uplink minimum TBS, or Transport Block Size, helps ensure that small VoNR packets are transmitted efficiently and reliably.
Statement D is correct because MCS downgrade control can improve robustness by selecting a more conservative modulation and coding scheme for VoNR DRBs when radio conditions require it.
Therefore, all listed enhancements are part of the VoNR link-budget improvement concept:
A, B, C, and D.

The correct answer is C .
Scheduling Request , or SR , is used by the UE to request uplink resources when it has uplink data to send.
The SR periodicity defines how often the UE gets an opportunity to send this scheduling request.
A shorter SR periodicity means the UE can request uplink resources more quickly, which improves uplink latency. However, it consumes more PUCCH/control-channel resources, reducing the number of UEs that can be efficiently supported.
A longer SR periodicity saves control-channel resources and can support more connected users, but it increases uplink access delay.
Therefore, SR periodicity is important because it creates a trade-off between:
Lower latency and higher connected-user capacity.

The correct answer is B .
In the 5G Core , component X is connected to:
N2 from NG-RAN
N11 toward SMF
N15 toward PCF
N26 toward the EPC mobility entity
These are typical interfaces of the AMF , or Access and Mobility Management Function . Therefore, X = AMF .
In the EPC , component Z is connected to:
S1-MME from eNB
S11 toward the gateway
N26 toward the 5GC AMF
These are typical interfaces of the MME , or Mobility Management Entity . Therefore, Z = MME .
Component Y is outside the core user-plane path and represents the external service network connected through N6/SGi , commonly shown as IMS in voice-service architecture diagrams. Therefore, Y = IMS .
So the correct mapping is:
X: AMF, Y: IMS, Z: MME.

The correct answer is C .
In FR2/mmWave , uplink coverage is often the limiting factor because UE transmit power is much lower than gNodeB transmit power, and mmWave propagation suffers from high path loss and blockage. Ericsson’s mmWave coverage discussion also notes that high-band coverage is limited by uplink signal quality and high- band propagation characteristics.
When the FR2 cell range is extended, UEs farther from the serving cell must transmit uplink signals over a more difficult radio path. This usually requires higher UE transmit power, more robust MCS, more repetitions or retransmissions, and potentially longer uplink activity. As a result, UE battery consumption can increase.
Therefore, extended FR2 range generally:
Increases power consumption because UEs need more energy to transmit uplink signals.