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WorksheetsPost Test Training Mobileum Platform
Total questions: 20
Worksheet time: 7mins
What is a major architectural change in 5G roaming?
Continued reliance on circuit-switched networks
Introduction of 5G Core for standalone operations
Elimination of VoLTE support
Increased dependency on SS7
What is a key challenge in outbound roaming for 5G NSA networks?
Lack of SS7 signaling support
Dependency on LTE core for mobility management
Inability to authenticate roaming subscribers
Limited spectrum availability
Which metric is most critical for evaluating roaming data session quality?
Signal strength
Packet loss rate
Subscriber location
Call duration
What is a key challenge in managing SIP signaling for VoLTE roaming?
High signaling overhead
Lack of encryption support
Inability to authenticate subscribers
Limited spectrum availability
How can AI/ML improve traffic steering?
By blocking roaming traffic
By predicting network congestion and optimizing routing
By eliminating LTE roaming
By enforcing manual network selection
How does real-time campaign activation drive roaming revenue?
By blocking VoLTE calls
Through contextual upsell opportunities
By restricting LTE roaming
By enforcing manual network selection
What is a real-world use case of VoLTE call continuity?
Blocking VoLTE calls
Ensuring uninterrupted voice calls during network transitions
Reducing roaming charges
Eliminating LTE roaming
What security protocol is used in 5G networks?
A5 encryption
IPsec
Enhanced authentication and encryption mechanisms
SS7 signaling
Roamers distribution mechanism by distributing roaming traffic among multiple networks based on relative ratio of subscribers?
List Based Redirection
Subscriber Ratio Distribution Control
Usage Based Steering
Golden Rule
In a 5G Standalone (SA) network, which component replaces the traditional EPC used in LTE?
IMS
AMF
HLR
GGSN
Which method allows NTR to steer a roamer proactively before the next registration cycle?
OTA V3 logs
SRDC (Subscriber Ratio Distribution Control)
On-Demand Steering (ODS)
Golden Rule
Which mechanism allows the configuration of specific reject codes based on VLR, SGSN, or MME?
Quality of Experience Scoring
Node-Based Reject Code Mechanism
CoS-based Steering Policies
OTA Redirection
Which of the following best describes the function of Roaming DNA in Mobileum's NTR solution?
Acts as a firewall for steering-related transactions
Detects IMSI spoofing attacks
Provides deep visibility into roaming experience and QoE
Enables device-level steering based on IMSI
What key advantage does LTE-aware NTR steering have compared to LTE-unaware steering?
Uses only OTA messages for steering
Avoids SS7 signaling entirely
Ensures effective steering during combined attach
Supports only fallback to 2G networks
Which feature of the NTR application allows operators to define preferred, non-preferred, and forbidden networks for a specific Class of Service (CoS)?
List Based Traffic Redirection
Subscriber Profiling
Threshold Controls
Node Based Rejection Mechanism
Which feature of the NTR application helps avoid redirection attempts on subscribers who are already registered on a particular network?
Symmetric Handling
Golden Rules
Threshold Controls
Enhanced Manual Mode Handling
What security protocol is used in 5G networks?
A5 encryption
IPsec
Enhanced authentication and encryption mechanisms
SS7 signaling
What is the main drawback of steering without device awareness?
The IMSI range cannot be read
OTA cannot function with VoLTE
Devices may latch to unsupported frequency bands
UE fails to initiate combined attach
In what scenario would the First Time Rejection Mechanism be preferred over Node Based Rejection in NTR9.0?
When the device supports VoLTE
When the subscriber is in manual mode
When the operator wants to avoid repeated rejection loops
When the IMSI is on the deny list
How does Mobileum's analytics enhance VoLTE and 5G roaming?
By dynamically adjusting Quality of Service (QoS) parameters
By blocking non-preferred roaming networks
By enforcing manual network selection
By reducing signaling overhead
