220-1102 32-bit application memory limit Practice Question
A user runs a 32-bit legacy application on a 64-bit Windows 10 workstation with 16 GB of RAM. The application frequently crashes with an 'Out of memory' error even when the system shows plenty of free RAM. Which of the following is the most likely cause?
⚠ Common exam trap
Test-takers frequently assume 'Out of memory' always means the system has insufficient physical RAM, rather than recognizing the 32-bit application's inherent 2 GB user-mode address space limitation.
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
✓
The 32-bit application cannot access more than 2 GB of user-mode memory by default
A 32-bit application is limited to a 4 GB virtual address space, with 2 GB reserved for kernel-mode by default and only 2 GB available for user-mode memory. Even though the system has 16 GB of RAM, the application cannot address more than 2 GB of user-mode memory, causing 'Out of memory' errors when it attempts to allocate beyond this limit.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The 32-bit application cannot access more than 2 GB of user-mode memory by default
Why this is correct
A 32-bit process is limited to a 2 GB user-mode address space by default, regardless of installed RAM. The application exhausts that virtual address ceiling, triggering out-of-memory errors while the 64-bit system still reports ample physical memory free.
- ✗
The system's page file is too small
Why it's wrong here
A 32-bit process is capped at roughly 2 GB of virtual address space regardless of page file size, so enlarging it cannot lift that ceiling; the error appears while physical RAM remains free. Tempting because page file exhaustion genuinely causes out-of-memory failures, but here the limit is architectural, not paging capacity.
- ✗
The application is not compatible with Windows 10
Why it's wrong here
Incompatibility would typically produce launch failures, missing DLL errors or crashes on specific API calls, not a consistent out-of-memory message; the application runs, so compatibility is not the constraint. Tempting because legacy software on Windows 10 often misbehaves, but the reported symptom is an address-space limit, not an OS incompatibility.
- ✗
The CPU is overheating
Why it's wrong here
Overheating causes thermal throttling or shutdowns, not 'Out of memory' errors, and would affect all processes rather than one application. It is tempting because heat can produce intermittent crashes, so a failing CPU or blocked fan is a plausible hardware suspect when diagnosing unstable workstations, but the error text points elsewhere.
Go deeper
Related to this question
Learn chapter
Troubleshoot: Application Crashes
Key term
Windows
Windows is a family of operating systems developed by Microsoft that manages computer hardware and software, providing a graphical user interface for users to interact with their devices.
Key term
Dual In-line Memory Module
A Dual In-line Memory Module (DIMM) is a small circuit board that holds memory chips and plugs into a computer's motherboard to provide Random Access Memory (RAM).
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 220-1102 practice question is part of Courseiva's free CompTIA 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 220-1102 exam.