The answer is a fine-tip active stylus. This is the correct choice because an active stylus contains its own internal circuitry and communicates with the tablet’s digitizer layer, enabling precise tracking even at the screen’s edges, whereas a passive capacitive stylus relies solely on the conductivity of your finger and can lose accuracy near the bezel where the touch sensor’s grid weakens. On the CompTIA A+ Core 1 220-1201 exam, this question tests your understanding of input device technologies and the difference between passive and active styluses—a common trap is assuming a different capacitive stylus or a screen protector will fix the issue, but the problem is the stylus type, not the surface. A helpful memory tip: “Active has accuracy; passive is for tapping, not tracing.”
220-1101 Mobile Device Accessories Practice Question
This 220-1201 practice question tests your understanding of mobile device accessories. 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 marketing team uses tablets to capture customer signatures on glass screen protectors. They report that the capacitive stylus often skips or fails to register strokes near the edges of the screen. After testing, you find the issue persists even without the protector. Which accessory should you recommend to improve stylus precision?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
A fine-tip active stylus
A fine-tip active stylus uses a digitizer layer for precise input, unlike passive capacitive styluses that rely on conductivity and can be inaccurate. A screen protector or Bluetooth keyboard won't address stylus accuracy, and a different capacitive stylus may still have the same 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.
✗
A tempered glass screen protector with an oleophobic coating
Why it's wrong here
Since the issue occurs without the protector, adding one won't fix the stylus accuracy problem.
✗
A Bluetooth keyboard
Why it's wrong here
A keyboard does not assist with stylus-based signature capture.
✓
A fine-tip active stylus
Why this is correct
Active styluses communicate with the device's digitizer for greater precision, reducing skipping and edge inaccuracies.
Related concept
Static NAT maps one inside address to one outside address.
✗
A different passive capacitive stylus with a larger tip
Why it's wrong here
A larger tip may actually reduce precision and does not address the underlying digitizer compatibility issue.
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.
Mobile Device Accessories — This question tests Mobile Device Accessories — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: A fine-tip active stylus — A fine-tip active stylus uses a digitizer layer for precise input, unlike passive capacitive styluses that rely on conductivity and can be inaccurate. A screen protector or Bluetooth keyboard won't address stylus accuracy, and a different capacitive stylus may still have the same 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.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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