The answer is to enable and recalibrate ClearType in Windows. This is correct because when text appears blurry at the monitor’s native resolution, the issue is typically with Windows’ font smoothing, not the display settings themselves. ClearType uses sub-pixel rendering to sharpen text on LCD screens, and if it is disabled or misconfigured, even a correctly set 1440p resolution will produce fuzzy characters and less crisp images. On the CompTIA A+ Core 1 220-1201 exam, this question tests your ability to distinguish between resolution misconfiguration and font rendering problems—a common trap is to adjust scaling or check the cable first, when the real fix is a simple ClearType recalibration. Remember the memory tip: “Blurry text at native res? ClearType’s the mess.”
220-1101 Display Devices Troubleshooting Practice Question
This 220-1201 practice question tests your understanding of display devices troubleshooting. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A user has a 27-inch 1440p monitor connected via DisplayPort. They report that text appears slightly blurry and images look less sharp than expected. The monitor's native resolution is set correctly in Windows. What should you check first?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "first"
Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable and recalibrate ClearType in Windows.
Blurry text at the correct native resolution often means ClearType (Windows font smoothing) is disabled or misconfigured. ClearType improves text clarity on LCD monitors by sub-pixel rendering. Enabling or recalibrating ClearType in Control Panel typically resolves the issue.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Replace the DisplayPort cable with an HDMI cable.
Why it's wrong here
Changing cable type won't fix blurry text; both can carry 1440p signals.
✗
Adjust the monitor's sharpness setting from the on-screen display (OSD) menu.
Why it's wrong here
Sharpness affects image edges but not text clarity at native resolution; it's more for lower resolutions.
✓
Enable and recalibrate ClearType in Windows.
Why this is correct
ClearType is specifically designed to improve text clarity on LCD screens; disabling it causes blurriness.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
✗
Set the monitor to a lower resolution to see if text improves.
Why it's wrong here
Lowering resolution would make text larger but blurrier, not sharper.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 220-1201 question in full detail.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 220-1201 NAT questions on configuration and troubleshooting.
Display Devices Troubleshooting — This question tests Display Devices Troubleshooting — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Enable and recalibrate ClearType in Windows. — Blurry text at the correct native resolution often means ClearType (Windows font smoothing) is disabled or misconfigured. ClearType improves text clarity on LCD monitors by sub-pixel rendering. Enabling or recalibrating ClearType in Control Panel typically resolves the issue.
What should I do if I get this 220-1201 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 220-1201 NAT questions on configuration and troubleshooting.
Are there clue words in this question I should notice?
Yes — watch for: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
About these practice questions
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These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A user's 4K monitor is set to 3840x2160 resolution but text and icons appear very small and blurry. The display cable is a standard HDMI cable. What is the most likely cause of the blurriness?
medium
A.The monitor's refresh rate is set too high
B.The graphics driver is corrupted
✓ C.The HDMI cable does not support enough bandwidth for 4K resolution
D.The monitor's scaling settings are incorrect
Why C: Standard HDMI cables (especially older versions) may not have sufficient bandwidth for 4K at proper refresh rates, leading to chroma subsampling and blurry text. The correct answer identifies bandwidth limitation as the cause, and the solution would be to use a high-speed HDMI or DisplayPort cable.
Variation 2. A customer brings in a desktop PC with a 4K monitor that displays a blurry image at native resolution. The monitor's settings show 3840x2160 resolution, but text is hard to read. What is the most likely issue?
medium
A.The monitor's sharpness setting is too low.
✓ B.The display scaling is set to 100%.
C.The HDMI cable does not support 4K.
D.The graphics card is overheating.
Why B: Blurry text at native resolution on a 4K monitor often indicates incorrect scaling settings in the operating system. Windows scaling should be set to 150% or 200% to make text readable, otherwise it appears too small and blurry due to pixel density.
Last reviewed: Jun 18, 2026
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This 220-1201 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 220-1201 exam.
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