The answer is that the stylus tip is not conductive. Capacitive touchscreens, like those on modern tablets, detect touch through the electrical conductivity of your finger or a specialized stylus; a non-conductive plastic tip cannot complete the circuit, which explains why the stylus does not register consistently. On the CompTIA A+ Core 1 220-1201 exam, this concept tests your understanding of input device technologies and the difference between resistive and capacitive screens—a common trap is assuming any stylus works on glass. Remember that capacitive screens require a conductive path, so the tip must be made of materials like conductive rubber or metal. A quick memory tip: “Capacitive craves conductivity”—if the tip isn’t conductive, the screen won’t respond.
220-1101 Mobile Device Connection Methods Practice Question
This 220-1201 practice question tests your understanding of mobile device connection methods. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 company deploys tablets for field workers to capture signatures on glass screens using a capacitive stylus. Several workers complain that the stylus does not register consistently. What is the most likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The stylus tip is not conductive.
Capacitive touchscreens require a conductive stylus; standard plastic or non-conductive styli will not work. The correct solution is to use a stylus with a conductive tip designed for capacitive screens.
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.
✗
The screen protector is too thick.
Why it's wrong here
A thick screen protector can reduce sensitivity, but the primary issue is the stylus type, not the protector.
✓
The stylus tip is not conductive.
Why this is correct
Capacitive screens rely on electrical conductivity; a non-conductive stylus tip will not be detected.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
✗
The tablet's touch calibration is off.
Why it's wrong here
Touch calibration issues affect all input, not just a specific stylus; the stylus works inconsistently, suggesting a compatibility problem.
✗
The workers are pressing too lightly.
Why it's wrong here
Capacitive screens detect touch through electrical field changes, not pressure; pressing harder does not improve detection.
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 Connection Methods — This question tests Mobile Device Connection Methods — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: The stylus tip is not conductive. — Capacitive touchscreens require a conductive stylus; standard plastic or non-conductive styli will not work. The correct solution is to use a stylus with a conductive tip designed for capacitive screens.
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: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.