CompTIA Updated 220-1201 Exam Questions and Answers by advik

Large electrical motors can emit electromagnetic interference (EMI), which can disrupt wireless signals and prevent connectivity.

From CompTIA A+ 220-1101 Official Study Guide, Objective 2.4 – Wireless troubleshooting:

“Sources of external interference such as motors or other electrical equipment can disrupt wireless network connectivity.”

Verified Source:

CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 2: Networking Troubleshooting

CompTIA Exam Objectives 220-1101, Domain 2.4

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Since only one user experiences the issue in a shared environment where everyone else has stable connectivity, CompTIA A+ suggests that the problem is most likely with the client device, not the network. The wireless card may be failing, overheating, or experiencing intermittent hardware faults.

If other Wi-Fi signals or EMI (electromagnetic interference) were the cause, multiple users would be affected. Frequency congestion (Option B) also impacts groups, not a single device.

CompTIA stresses that isolating whether the issue affects one user or many helps determine whether the fault lies with the network or device. Because the problem is isolated, the most probable cause is a malfunctioning wireless NIC in the user’s laptop.

Amaintenance kitfor a laser printer often includesrollers, fuser, and other partsthat wear out over time. If the printer issmudging and misfeeding, it ' s a sign thatmultiple components are failing, which a maintenance kit is designed to resolve.

Option A (Fuser):May cause smudging if it ' s not heating correctly, but it won’t resolve paper misfeeds alone.

Option C (Corona wire):Can cause poor image quality if dirty but doesn’t affect paper feeding.

Option D (Toner cartridge):Can cause streaks if defective, but not paper feed issues.

CompTIA A+ Core 1 Exam Objective Reference:

Objective 3.4: Given a scenario, install and configure printers.

Inlaser printers, thefuser unitis responsible formelting the toner onto the paperusing heat and pressure. If the toner rubs off easily, it ' s a clear sign thefuser is failing or not heating properly. Replacing the fuser will ensure the toner bonds correctly to the paper.

Option B (Drum):Transfers the image, but doesn ' t fuse the toner.

Option C (Developer roller):Applies toner to the drum wouldn’t cause toner to rub off.

Option D (Discharge lamp):Prepares the drum for a new image; not related to toner adhesion.

CompTIA A+ Core 1 Exam Objective Reference:

Objective 3.7: Given a scenario, troubleshoot common printer problems.

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