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220-1202 Practice Question: That their Windows 10 desktop is running very…
A user reports that their Windows 10 desktop is running very slowly, especially when opening multiple applications. They have 8 GB of RAM and a traditional hard drive. Task Manager shows that memory usage is consistently at 90% or higher. Which component is most likely the bottleneck and what is the best upgrade?
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 RAM is the bottleneck; add more RAM.
High memory usage (90%+) with 8 GB of RAM indicates that the system is running out of physical memory, causing it to use the hard drive as virtual memory, which is very slow. The best upgrade is to add more RAM to reduce reliance on the slow hard drive paging.
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 CPU is the bottleneck; upgrade to a faster processor.
Why it's wrong here
A CPU bottleneck typically manifests as consistently high CPU utilization, often near 100%, visible in Task Manager, even during routine tasks. If the system is experiencing general slowness and unresponsiveness, but the CPU usage remains relatively low, the processor is not the primary limiting factor. General application sluggishness, especially when opening multiple programs or switching between them, points away from processing power and towards a different resource constraint.
- ✗
The hard drive is the bottleneck; upgrade to an SSD.
Why it's wrong here
While upgrading to a Solid State Drive (SSD) significantly improves overall system responsiveness, boot times, and application loading speeds by enhancing I/O operations, it primarily addresses storage access speed. If the system's slowness is due to insufficient physical RAM, the operating system will heavily rely on the much slower virtual memory (paging file) on the storage drive. An SSD would make this virtual memory access faster, but it does not resolve the fundamental issue of inadequate physical memory, which is the true bottleneck causing excessive paging.
- ✓
The RAM is the bottleneck; add more RAM.
Why this is correct
Insufficient Random Access Memory (RAM) forces the operating system to frequently move data between physical RAM and the much slower virtual memory (paging file) located on the storage drive. This constant swapping of data, often referred to as 'thrashing,' drastically reduces overall system performance and responsiveness, making applications feel sluggish and causing delays. Adding more physical RAM directly alleviates this by providing more fast memory for active processes, thereby minimizing the system's reliance on the significantly slower virtual memory.
- ✗
The graphics card is the bottleneck; upgrade to a dedicated GPU.
Why it's wrong here
A graphics card bottleneck primarily impacts visual performance, such as low frame rates in demanding video games, slow rendering times in professional design software, or choppy video playback. General system slowness and unresponsiveness across various applications, particularly those not graphically intensive, are not characteristic symptoms of a GPU limitation. The issue described points to a broader system resource constraint, specifically memory, rather than a specialized graphics processing deficiency.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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