easyMultiple ChoiceObjective-mapped
220-1201 Practice Question: A customer reports that their Bluetooth keyboard…
A customer reports that their Bluetooth keyboard intermittently disconnects from their tablet while typing. The tablet and keyboard are less than a meter apart, and no other Bluetooth devices are nearby. Which of the following is the most likely cause of the disconnection?
⚠ Common exam trap
The 220-1201 exam often tests the misconception that Bluetooth disconnections are always caused by interference or hardware failure, when in fact the human body's absorption of 2.4 GHz signals is a common and overlooked cause of intermittent connectivity.
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 user's body is blocking the Bluetooth signal when typing.
The most likely cause is that the user's body is blocking the Bluetooth signal. Bluetooth operates in the 2.4 GHz ISM band, which is heavily absorbed by water in the human body. When typing, the user's hands and torso can create a significant attenuation path between the keyboard and tablet, especially if the tablet is placed behind the user or at an angle that places the body in the direct line of sight. This intermittent physical obstruction explains the disconnection pattern without any other devices nearby.
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 tablet's Bluetooth adapter is defective.
Why it's wrong here
A defective Bluetooth adapter on the tablet would typically manifest as a complete inability to connect to any Bluetooth devices, frequent and consistent connection drops regardless of user interaction, or the adapter not being recognized by the operating system at all. The intermittent disconnections described, specifically tied to the act of typing and implied posture changes, strongly suggest an external signal obstruction rather than a fundamental hardware fault within the tablet's adapter.
- ✗
The keyboard's battery is low.
Why it's wrong here
While a low battery in the keyboard can certainly cause intermittent disconnections, reduced range, or even complete failure, the problem description explicitly links the disconnections to the *act of typing* and associated changes in user posture. A low battery would typically result in more random disconnections, or a consistent pattern of failure unrelated to specific physical movements, rather than a direct correlation with user interaction.
- ✓
The user's body is blocking the Bluetooth signal when typing.
Why this is correct
Bluetooth signals operate in the 2.4 GHz ISM band, a frequency range where radio waves are significantly absorbed by water and other organic materials, which are abundant in the human body. When a user's hands, arms, or torso are positioned directly between the Bluetooth keyboard's transmitter and the tablet's receiver during typing, the human body acts as an effective RF attenuator, weakening the signal below the receiver's threshold and causing intermittent disconnections.
- ✗
There is interference from a nearby Wi-Fi network.
Why it's wrong here
Both Bluetooth and Wi-Fi commonly operate within the 2.4 GHz frequency band, making interference a potential cause for wireless connectivity issues. However, the problem specifically occurs *when typing* and implies a change in user posture, not a constant environmental factor. If Wi-Fi interference were the primary cause, the disconnections would likely be more random, consistent, or tied to the proximity of the Wi-Fi source, rather than being directly correlated with the user's physical interaction with the keyboard.
Go deeper
Related to this question
About these practice questions
Courseiva writes every 220-1201 question from scratch — 972 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.