Describe the core capabilities of the finance and operations apps →hardMultiple ChoiceObjective-mapped
MB-920 Practice Question: Describe the core capabilities of the finance and operations apps
A retail company using Dynamics 365 Commerce is experiencing slow performance in the point of sale (POS) system during peak hours. The company uses a hybrid deployment with on-premises back-office and cloud-based POS. What is the most likely cause of the performance issue?
⚠ Common exam trap
Watch out — candidates often assume on-premises data center overload (Option A) is the cause, overlooking that the POS is cloud-based and the bottleneck is the network link between environments, not the back-office server's processing capacity.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Network latency between on-premises and cloud environments
In a hybrid deployment where the on-premises back-office handles data processing and the cloud-based POS relies on real-time communication, network latency between the two environments is the most likely cause of slow performance during peak hours. The POS system must send requests (e.g., inventory lookups, transaction processing) to the on-premises back-office over the internet, and high latency or packet loss can significantly degrade response times, especially under heavy load.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
On-premises data center overload
Why it's wrong here
The back-office is on-premises, but the POS is cloud-based; the bottleneck is likely the network.
- ✓
Network latency between on-premises and cloud environments
Why this is correct
High latency during peak hours can cause slowdowns when the POS system needs to communicate with the on-premises back-office.
- ✗
Incorrect POS hardware profile configuration
Why it's wrong here
Hardware profile configuration is static and unlikely to cause intermittent peak-hour issues.
- ✗
Insufficient POS terminal memory
Why it's wrong here
The issue occurs only during peak hours, suggesting a network or server load issue rather than local hardware.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This MB-920 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the MB-920 exam.