CompTIA  220-1202 A+ Certification Exam: Core 2  Dumps and Practice Test Questions Set 5 Q81-100

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Q81) A user reports that their Windows 10 laptop cannot detect any Bluetooth devices. Other devices on the same network can pair with Bluetooth devices successfully. Which of the following should the technician check FIRST?

A) Bluetooth adapter status in Device Manager
B) Hard drive free space
C) Screen resolution settings
D) BIOS version

Answer: A) Bluetooth adapter status in Device Manager

Explanation:

When a Windows 10 laptop cannot detect Bluetooth devices while other devices function normally, the issue is likely local to the laptop’s Bluetooth hardware or configuration. Bluetooth functionality relies on a combination of hardware, drivers, and software services. If the adapter is disabled, missing, or malfunctioning, the system cannot scan or connect to Bluetooth peripherals such as headsets, keyboards, mice, or speakers.

Option A) is correct because checking the Bluetooth adapter in Device Manager is the first step to identify the root cause. In Device Manager, a functioning Bluetooth adapter should appear under the “Bluetooth” category without any warning symbols. If a yellow triangle or “Unknown Device” appears, the driver may be missing, corrupted, or incompatible. The technician can update the driver from the manufacturer’s website, reinstall it, or enable the adapter if it is disabled. Some laptops also have a physical switch or function key to toggle Bluetooth, which should be verified.

Other steps include ensuring that the Bluetooth service is running in the Windows Services console. If the service is stopped or disabled, the system cannot manage connections to Bluetooth devices. Additionally, interference from nearby wireless devices or outdated Windows updates can cause pairing issues. Running the Windows Bluetooth troubleshooter may also detect and repair common problems automatically.

Option B) Hard drive free space affects system performance and the ability to store files but does not prevent the detection of Bluetooth devices. While extremely low disk space can hinder overall system functionality, Bluetooth connectivity issues are usually unrelated to storage.

Option C) Screen resolution does not affect Bluetooth functionality. Display settings impact how content is visualized but do not influence wireless connectivity.

Option D) BIOS version may occasionally include settings to enable or disable integrated wireless devices, including Bluetooth. However, in most modern laptops, enabling or updating Bluetooth is managed entirely by Windows drivers and services. Unless the device does not appear in Device Manager due to disabled firmware-level control, BIOS changes are rarely required.

Once the Bluetooth adapter is verified as functional and the driver is up to date, the technician can attempt pairing again. If the issue persists, testing the adapter with another device or USB Bluetooth dongle may help isolate hardware faults. Proper troubleshooting ensures the user can reliably connect devices while minimizing downtime and frustration.

Q82) A user reports that their Windows 10 system is extremely slow and frequently displays high disk usage in Task Manager. The process “Antimalware Service Executable” is consuming significant CPU and disk resources. Which of the following is the BEST explanation for this behavior?

A) Windows Defender is performing a background system scan
B) The system is infected with malware
C) The hard drive is failing
D) The display driver is outdated

Answer: A) Windows Defender is performing a background system scan

Explanation:

The “Antimalware Service Executable” process (MsMpEng.exe) is part of Windows Defender, the built-in antivirus program in Windows 10. Its primary role is to scan the system for malware and other threats in real time or during scheduled scans. When running a system scan, Windows Defender can consume high CPU, memory, and disk resources, particularly if the scan involves large volumes of data or complex analysis. Users often experience slow system performance during these scans.

Option A) is correct because high CPU and disk usage from this process typically indicates that Windows Defender is actively scanning files or updating its malware definitions. Task Manager will show peaks in resource usage during full system scans or background operations. These temporary spikes are normal and generally resolve after the scan completes. Users can schedule scans for off-hours or reduce priority in Windows Defender settings to minimize disruption during active use. Monitoring the scan progress and reviewing Windows Defender logs can provide insight into current scanning activities.

Option B) While malware infection can also cause high CPU usage, identifying the process as a known Windows Defender component indicates legitimate activity rather than malicious behavior. A thorough malware scan is recommended if unusual behavior continues after the scheduled scans complete, but most resource spikes are expected during Defender operations.

Option C) Hard drive failure can result in slow system performance, read/write errors, and system instability. However, high resource consumption specifically attributed to “Antimalware Service Executable” points to legitimate software activity rather than hardware failure. Signs of disk failure include unusual noises, bad sectors, and repeated file corruption, which differ from Defender-driven resource utilization.

Option D) Outdated display drivers can cause graphical issues, application crashes, or poor rendering performance but do not impact CPU and disk usage related to antivirus scanning. Graphics problems are unrelated to the observed resource spikes.

Technicians can optimize performance by scheduling scans for times when the computer is idle, enabling the Windows Defender “Limited CPU usage” option, or temporarily pausing scans during intensive tasks. Educating users about the normal behavior of Windows Defender helps differentiate between expected system activity and actual performance issues, reducing unnecessary concern. In enterprise environments, centralized antivirus management allows administrators to control scan schedules and resource limits across multiple systems, ensuring security without sacrificing productivity.

Q83) A user reports that their Windows 10 laptop cannot print to a shared network printer. Other users on the same network can print without issues. Which of the following should the technician check FIRST?

A) User’s network permissions on the shared printer
B) Printer toner levels
C) Hard drive free space
D) BIOS version

Answer: A) User’s network permissions on the shared printer

Explanation:

 When a single user is unable to print to a network-shared printer while other users experience no issues, the most probable cause is insufficient permissions. Windows manages access to shared resources through user accounts and groups. Permissions control who can print, manage printer properties, or view the printer on the network. If a user lacks the necessary “Print” permission, print jobs will fail even if the printer is operational and connected to the network.

Option A) is correct because verifying and configuring the user’s network permissions is the first step in resolving access issues. The technician should access the printer properties on the host computer or print server, navigate to the Security tab, and confirm that the affected user or group has appropriate access. Adding the user to the correct group or explicitly granting “Print” permission restores functionality. Additionally, ensuring that the printer is shared and visible in the network prevents connection issues.

Option B) Printer toner levels affect print quality but do not prevent printing for a single user while others can print. Low toner would result in faded or incomplete printouts, not user-specific failures.

Option C) Hard drive free space may affect spool file creation locally, but this is unlikely if other users print successfully. Local storage is rarely the root cause in network-specific access problems.

Option D) BIOS version is irrelevant in this scenario, as printer permissions and sharing are managed at the operating system and network level. BIOS controls hardware initialization and startup settings, which do not impact user-specific access to network printers.

Once permissions are verified, additional troubleshooting steps include checking the user’s printer driver installation, restarting the Print Spooler service, and ensuring network connectivity to the printer. Maintaining accurate access control prevents unauthorized use and ensures seamless printing for authorized users.

Q84) A user reports that their Windows 10 laptop battery drains rapidly, even when the device is idle. The laptop is also unusually warm. Which of the following is the MOST likely cause?

A) Background applications consuming excessive CPU resources
B) Faulty motherboard
C) Cracked display
D) Incorrect BIOS settings

Answer: A) Background applications consuming excessive CPU resources

Explanation:

 Rapid battery drain and excessive heat in a laptop are typically caused by processes consuming CPU or GPU resources continuously, even when the device appears idle. Many applications, particularly cloud sync services, update agents, and third-party utilities, run background tasks that generate heat and draw power. High CPU usage increases energy consumption and creates heat, causing the laptop to become unusually warm. Battery life is impacted because the CPU and associated components require more power to process these tasks continuously.

Option A) is correct because background applications are the most common cause of this behavior. The technician should review Task Manager to identify processes consuming excessive CPU, memory, or disk resources. Managing startup programs, disabling unnecessary background tasks, and configuring power-saving modes in Windows 10 can significantly reduce battery drain and heat production. Monitoring resource usage over time also helps identify rogue processes or malware that may be causing abnormal activity.

Option B) A faulty motherboard can cause power issues, random shutdowns, or system instability. However, in this scenario, the pattern of continuous CPU-intensive background activity indicates software-driven power consumption rather than hardware failure.

Option C) A cracked display does not impact battery usage or system temperature. While the display may be physically damaged, it does not generate heat or drain battery at an accelerated rate.

Option D) Incorrect BIOS settings can affect CPU throttling, fan speed, or power management features. While these settings may influence heat and battery efficiency, the primary culprit for continuous heat generation and rapid battery drain is software running in the background.

After identifying resource-intensive applications, the technician can optimize power plans, enable Windows 10 Battery Saver mode, and educate the user about limiting unnecessary background applications. Maintaining clean startup programs, monitoring CPU usage, and implementing energy-saving practices extend battery life and prevent overheating.

Q85) A user reports that their Windows 10 system cannot boot after a recent update. Which of the following tools should the technician use FIRST to attempt recovery?

A) Windows Recovery Environment (WinRE)
B) Device Manager
C) Disk Cleanup
D) Task Scheduler

Answer: A) Windows Recovery Environment (WinRE)

Explanation:

When a Windows 10 system fails to boot after a recent update, the Windows Recovery Environment (WinRE) provides the first line of troubleshooting. WinRE is a dedicated recovery environment built into Windows 10 that offers tools to diagnose and repair startup issues, restore the system, and access advanced troubleshooting utilities. Using WinRE allows the technician to address boot failures without resorting to a full reinstallation, preserving user data and settings.

Option A) is correct because WinRE provides multiple recovery options. These include Startup Repair, which can automatically detect and fix problems preventing Windows from starting; System Restore, which reverts the system to a point prior to the update; Command Prompt, which enables advanced repair operations like rebuilding the boot configuration data (BCD); and Safe Mode, which allows the system to boot with minimal drivers and services. The technician can methodically test these options to restore the system to a functional state.

Option B) Device Manager cannot be accessed if the system fails to boot. It is useful for managing drivers once Windows is running, but it cannot resolve startup failures caused by updates or corrupted system files.

Option C) Disk Cleanup helps reclaim disk space but does not repair startup issues. Removing temporary files is only beneficial after Windows successfully boots.

Option D) Task Scheduler automates tasks and processes but has no ability to repair a non-booting system. Scheduled tasks do not affect the Windows startup sequence in this context.

Once WinRE is accessed, the technician may first attempt Startup Repair, and if unsuccessful, perform a System Restore to undo recent changes. Advanced troubleshooting with command-line tools allows repair of corrupted boot files, checking disk integrity, or manually uninstalling problematic updates. Using WinRE ensures minimal disruption to user data while restoring system functionality.

Q86) A user reports that their Windows 10 laptop screen flickers intermittently. The issue occurs only when certain applications are open. Which of the following is the MOST likely cause?

A) Outdated or incompatible display driver
B) Low hard drive free space
C) Incorrect screen resolution
D) Disabled firewall

Answer: A) Outdated or incompatible display driver

Explanation:

Screen flickering on a Windows 10 laptop that occurs specifically when certain applications are open is most often caused by an outdated or incompatible display driver. Display drivers act as the intermediary between the operating system and the graphics hardware, translating commands into visual output. When a driver is outdated, incompatible with the current Windows build, or corrupted, the communication between the GPU and the OS may fail intermittently, resulting in flickering, tearing, or other display anomalies. This is particularly noticeable in resource-intensive applications, like video editors, games, or web browsers with dynamic content.

Option A) is correct because display driver issues are the primary cause of application-specific screen flickering. The technician should verify the driver version in Device Manager and cross-check it with the latest version provided by the GPU manufacturer. Updating, rolling back, or reinstalling the driver can resolve conflicts introduced by recent Windows updates or new applications. Additionally, certain applications may require hardware acceleration to be disabled if the GPU cannot fully support the software’s graphical demands.

Option B) Low hard drive free space affects system performance and the ability to create temporary files, but it does not directly cause screen flickering. Performance issues might make the system slower, but visual anomalies tied to specific applications indicate driver or GPU problems rather than storage limitations.

Option C) Incorrect screen resolution can cause display scaling issues or distorted visuals, but it does not cause intermittent flickering in response to application activity. Changing resolution may impact clarity and size but not the stability of the display when software is running.

Option D) Disabled firewall affects network security but does not influence video output or GPU operations. Network security settings are unrelated to visual display behavior.

In addition to updating the display driver, the technician should ensure that Windows 10 itself is fully updated, as cumulative updates often include fixes for graphics subsystem issues. Checking for application updates is also important, as newer versions may resolve compatibility issues with certain drivers. Finally, monitoring GPU usage during the occurrence of flickering can reveal whether the problem is related to GPU overload, driver conflicts, or misconfiguration. Addressing driver issues restores display stability, prevents visual artifacts, and ensures smooth performance across applications.

Q87) A user reports that their Windows 10 laptop is not charging even though the power adapter is connected. Which of the following should the technician check FIRST?
A) Power adapter and physical connections
B) Hard drive free space
C) Monitor resolution
D) Screen saver settings

Answer: A) Power adapter and physical connections

Explanation:

When a Windows 10 laptop is not charging, the most immediate and common causes involve the power adapter, battery, or physical connections. A laptop battery relies on a functioning power adapter and proper electrical contact to recharge. Even if the system is on and running, a loose connection, damaged cable, or malfunctioning adapter can prevent charging.

Option A) is correct because verifying the power adapter and physical connections is the fastest way to determine whether the issue is hardware-related. The technician should inspect the adapter for visible damage, ensure it is plugged into both the laptop and wall outlet securely, and test the adapter on another compatible device if available. Laptops may also have an LED indicator on the charging port to show power delivery status. Testing the system with a different outlet can rule out external power issues. In some cases, the battery itself may have failed, and the system may only operate on AC power without charging.

Option B) Hard drive free space does not impact the laptop’s ability to charge. Storage limitations affect software performance and file storage, not electrical charging functionality.

Option C) Monitor resolution affects display clarity but is unrelated to power delivery. Adjusting resolution will not change battery charging behavior.

Option D) Screen saver settings do not impact the laptop’s charging circuit or battery health. These settings only control idle display behavior.

Once the adapter and physical connections are verified, additional troubleshooting may include performing a battery calibration, checking BIOS battery status, resetting the embedded controller (EC), or replacing the battery if it no longer holds charge. Firmware and driver updates for the battery management system may also resolve charging anomalies. Addressing charging issues promptly prevents sudden power loss, data corruption, and potential hardware damage.

Q88) A user reports that their Windows 10 laptop frequently freezes and displays high CPU usage by “Windows Modules Installer Worker.” Which of the following BEST describes the situation?

A) The system is installing or checking for Windows updates
B) The hard drive is failing
C) Malware infection
D) Outdated display driver

Answer: A) The system is installing or checking for Windows updates

Explanation:

 The “Windows Modules Installer Worker” process (TiWorker.exe) is a legitimate Windows service responsible for installing, modifying, and removing Windows updates. High CPU and disk usage by this process is common when Windows is checking for updates or installing them in the background. While the system may appear slow or unresponsive during these operations, this is expected behavior and does not indicate a hardware fault.

Option A) is correct because Windows Modules Installer Worker is performing a background system operation, scanning for available updates or installing patches. Resource-intensive tasks like these temporarily consume significant CPU and disk resources. Task Manager will display spikes in CPU usage and disk activity, which generally normalize once updates complete. Users can schedule updates to occur during off-hours to minimize disruptions or configure Windows Update to operate with lower priority to reduce system impact during active use.

Option B) A failing hard drive may cause system slowdowns, read/write errors, and corrupted files. However, if the high CPU and disk usage is specifically attributed to TiWorker.exe, the issue is related to update processes rather than hardware failure. Symptoms of hard drive failure include unusual noises, system crashes, and file corruption, not just temporary high CPU usage during updates.

Option C) Malware infection can cause abnormal resource consumption, but the identified process is a standard Windows service. While malware may disguise itself as legitimate processes, confirming that Windows Update is active and performing scans rules out infection in most cases. Running a full malware scan adds an extra layer of confirmation.

Option D) Outdated display drivers may affect visual output, graphics performance, or application stability, but they do not lead to high CPU or disk usage associated with Windows Modules Installer Worker. Graphics issues are unrelated to system update processes.

Technicians can monitor the progress of Windows updates, temporarily pause updates if system performance is critical, and educate users about normal update behavior. Ensuring that the system completes updates helps maintain security, stability, and compatibility. In enterprise environments, administrators can schedule updates and optimize update delivery using WSUS or SCCM to reduce user impact.

Q89) A user reports that their Windows 10 laptop cannot connect to a VPN, although the VPN works on other devices. Which of the following should the technician check FIRST?

A) Local firewall or antivirus software blocking VPN traffic
B) ISP service status
C) Physical Ethernet cables
D) Screen resolution settings

Answer: A) Local firewall or antivirus software blocking VPN traffic

Explanation:

When a VPN connection fails on a single device while working on others, the problem is most often local to the affected system. Firewalls and antivirus software monitor network activity and may block certain ports or protocols used by VPN clients, such as PPTP, L2TP, or OpenVPN. If the VPN client cannot communicate through the firewall, connection attempts fail even with correct credentials.

Option A) is correct because checking firewall and antivirus settings addresses the most likely cause. The technician should temporarily disable security software to test VPN connectivity. If the connection succeeds, the firewall or antivirus is blocking VPN traffic. Creating exceptions for the VPN client or allowing specific ports/protocols restores connectivity without compromising security. Additionally, confirming the VPN client is up to date and verifying protocol settings ensures compatibility with the network.

Option B) ISP service status affects all devices on the network. Since other devices successfully connect, the ISP is not the root cause. Troubleshooting ISP issues is unnecessary in this case.

Option C) Physical Ethernet cables are irrelevant if the laptop is connecting via Wi-Fi. Cable problems would only affect wired connections, and the functionality of other devices indicates the network is operating correctly.

Option D) Screen resolution settings do not affect network traffic or VPN connectivity. Display configurations are unrelated to secure tunneling or authentication protocols.

After confirming firewall or antivirus settings, the technician may also examine VPN logs to check for authentication failures, protocol mismatches, or misconfigured routes. Documenting firewall exceptions ensures consistent VPN access in future scenarios and balances security with connectivity requirements.

Q90) A user reports that their Windows 10 system frequently displays “Low Disk Space” warnings on the C: drive. Which of the following is the BEST course of action to resolve this issue?

A) Delete unnecessary files and run Disk Cleanup
B) Upgrade the CPU
C) Update the graphics driver
D) Replace the RAM

Answer: A) Delete unnecessary files and run Disk Cleanup

Explanation:

Low disk space warnings occur when the storage volume is running critically low on free space. Windows requires free space for temporary files, page files, system restore points, and updates. Insufficient disk space can cause performance degradation, application crashes, and failed updates.

Option A) is correct because deleting unnecessary files and running Disk Cleanup immediately frees space. Disk Cleanup removes temporary files, system cache, old Windows update files, and other non-essential data. Users can also uninstall unused applications and move large personal files to external storage. Combining these measures restores available storage and improves system performance.

Option B) Upgrading the CPU affects processing speed but does not increase storage capacity. CPU upgrades do not resolve low disk space issues or prevent warnings.

Option C) Updating the graphics driver may improve visual performance but does not address storage limitations. Driver updates are unrelated to free disk space.

Option D) Replacing RAM increases memory capacity but does not increase disk storage. While adding RAM may improve multitasking, it does not prevent low disk space warnings.

Technicians should also advise users to maintain at least 10–15% free space on primary drives to prevent performance issues. For long-term solutions, upgrading to a larger SSD or implementing cloud storage can mitigate recurring low space warnings.

Q91) A user reports that their Windows 10 laptop is extremely slow, and Task Manager shows high CPU usage from “System Interrupts.” Which of the following is the MOST likely cause?

A) Hardware or driver conflicts
B) Low hard drive space
C) Incorrect screen resolution
D) Disabled firewall

Answer: A) Hardware or driver conflicts

Explanation:

The “System Interrupts” process in Windows 10 is not a real process but a representation of hardware interrupts handled by the CPU. When the CPU spends excessive time processing interrupts, the system may appear slow, unresponsive, or stuttering. High “System Interrupts” CPU usage is often caused by hardware devices generating frequent or continuous interrupts due to driver issues, hardware conflicts, or failing components. Devices that commonly trigger this behavior include network adapters, USB controllers, graphics cards, and storage controllers.

Option A) is correct because hardware or driver conflicts are the primary cause of elevated CPU usage by “System Interrupts.” The technician should examine Device Manager for devices with yellow warning triangles or unknown devices. Updating or rolling back drivers, checking for firmware updates, and temporarily disconnecting peripherals can help isolate the problematic hardware. Additionally, testing the system in Safe Mode can determine whether the issue persists with minimal drivers loaded. If removing or replacing a device resolves the high interrupts, the source of the conflict is identified.

Option B) Low hard drive space can degrade overall performance and prevent temporary file creation but does not cause high CPU usage in “System Interrupts.” Storage constraints manifest differently, typically through slow file operations rather than excessive interrupt handling.

Option C) Incorrect screen resolution may affect display clarity and GPU load but does not increase CPU usage associated with system interrupts. Visual issues do not generate the kind of CPU overhead observed in Task Manager in this scenario.

Option D) Disabled firewall affects network security and traffic filtering but does not generate CPU interrupts. Security settings do not influence the hardware interrupt process handled by the kernel.

After identifying the conflicting hardware or driver, the technician should update drivers to the manufacturer’s latest stable versions, apply BIOS or firmware updates, and ensure devices are properly seated or connected. In enterprise environments, monitoring hardware health with diagnostic tools can prevent prolonged performance issues caused by system interrupts. Proper maintenance and timely driver updates prevent CPU bottlenecks and improve system responsiveness, ensuring that “System Interrupts” usage remains within normal limits.

 

Q92) A user reports that their Windows 10 laptop cannot print to a local printer connected via USB. Other USB devices function properly. Which of the following is the FIRST step a technician should take?

A) Verify the printer driver is installed and up to date
B) Replace the hard drive
C) Adjust screen resolution
D) Disable the firewall

Answer: A) Verify the printer driver is installed and up to date

Explanation:

When a Windows 10 system cannot print to a locally connected USB printer, the most common cause is a missing, outdated, or incompatible printer driver. Drivers allow Windows to communicate with the printer hardware, translate print commands, and handle print queues. Without the correct driver, the operating system cannot properly interact with the printer, resulting in failed print jobs even if the USB connection is functional.

Option A) is correct because verifying and updating the printer driver is the logical first troubleshooting step. The technician should access Device Manager to check for the printer under “Printers” or “Universal Serial Bus controllers.” A yellow warning triangle or “Unknown Device” may indicate a driver issue. Installing the latest driver from the manufacturer’s website or using Windows Update ensures compatibility with the current Windows 10 build. If the driver is already installed, uninstalling and reinstalling it can resolve corruption issues. The technician should also verify the printer is set as the default device and that the USB cable is connected securely.

Option B) Replacing the hard drive is unnecessary because the problem is software-related, not hardware failure. The hard drive functions correctly for other USB devices, indicating the issue is driver-specific rather than storage-related.

Option C) Adjusting screen resolution does not impact USB printer functionality. Display settings affect only how content is visualized on the screen and are unrelated to peripheral connectivity.

Option D) Disabling the firewall is irrelevant for local USB printers. While firewalls control network access, local USB communication occurs independently of network security settings.

After confirming driver installation, the technician may perform additional steps such as restarting the Print Spooler service, trying a different USB port, or testing the printer on another system to verify hardware integrity. Ensuring that the driver is compatible with the Windows 10 version is critical for reliable printing. Proper driver management prevents printing errors, maintains system stability, and ensures users can complete tasks efficiently.

Q93) A user reports that their Windows 10 laptop frequently loses Wi-Fi connectivity while other devices on the same network remain connected. Which of the following is the MOST likely cause?

A) Outdated or corrupted wireless adapter driver
B) ISP service outage
C) Ethernet cable disconnected
D) Low screen resolution

Answer: A) Outdated or corrupted wireless adapter driver

Explanation:

When a Windows 10 device frequently loses Wi-Fi connectivity while other devices on the network remain stable, the issue is typically local to the device’s wireless adapter or driver. Wi-Fi drivers allow the operating system to communicate with the wireless network card, handle encryption protocols, and maintain stable connections. If the driver is outdated, corrupted, or incompatible with the current Windows build, intermittent connectivity issues occur, including dropped connections, slow speeds, and inability to reconnect automatically.

Option A) is correct because updating or reinstalling the wireless adapter driver often resolves these problems. The technician should check Device Manager for any warning indicators on the wireless adapter, update the driver via the manufacturer’s website, and, if necessary, uninstall the driver to allow Windows to reinstall it automatically. Additionally, verifying that Windows power management settings do not allow the system to turn off the wireless adapter to save power is important. Disabling this option prevents unnecessary disconnects during idle periods. Testing with different Wi-Fi networks or other devices helps confirm that the issue is adapter-specific rather than network-wide.

Option B) ISP service outages affect all devices on the network. Since other devices remain connected, the ISP is not the cause, and troubleshooting external connectivity is unnecessary.

Option C) Ethernet cable disconnection is irrelevant to Wi-Fi connectivity. Wired connections do not interfere with wireless network operations unless a specific configuration is enforcing a priority of Ethernet over Wi-Fi, which is uncommon.

Option D) Low screen resolution affects display quality but has no effect on wireless connectivity. Network performance is independent of display settings.

After updating drivers and verifying settings, the technician can also perform network resets, forget and reconnect to Wi-Fi networks, and check for interference from nearby devices. Maintaining up-to-date drivers and stable network configurations ensures consistent wireless performance and minimizes disruptions for the user.

Q94) A user reports that their Windows 10 laptop battery drains rapidly even when the device is idle. Task Manager shows high CPU usage from several background applications. Which of the following is the MOST likely cause?

A) Excessive background applications consuming CPU resources
B) Low hard drive free space
C) Outdated display driver
D) Disabled firewall

Answer: A) Excessive background applications consuming CPU resources

Explanation:

Rapid battery drain in a Windows 10 laptop while idle is commonly caused by background applications consuming CPU and memory resources. CPU-intensive processes generate heat and increase power consumption, which accelerates battery depletion. Common culprits include cloud sync services, update agents, resource-heavy utilities, and software running in the background without user awareness. High CPU usage even when the laptop appears idle indicates that system resources are being actively consumed, which directly impacts battery life and thermal management.

Option A) is correct because managing background applications addresses the primary cause of battery drain. The technician should use Task Manager to identify resource-intensive processes, disable unnecessary startup programs, and configure applications to limit background activity. Enabling Windows Battery Saver mode and adjusting power plans also helps optimize energy consumption. Users should be educated on minimizing background services, disabling unneeded notifications, and updating software to reduce CPU load.

Option B) Low hard drive free space affects system performance and the ability to create temporary files but does not directly cause excessive battery drain. Storage-related issues typically result in slower application load times rather than increased CPU activity.

Option C) Outdated display drivers may impact GPU-intensive tasks or graphics performance but are unlikely to be the primary cause of background CPU utilization affecting battery life. Display driver updates may improve performance but will not resolve systemic battery drain caused by multiple active processes.

Option D) Disabled firewall does not influence CPU usage or battery consumption. Firewalls control network security but are unrelated to idle CPU utilization.

After identifying and optimizing background applications, the technician may also suggest monitoring processes periodically to prevent future battery issues. Ensuring the laptop operates efficiently enhances battery longevity, maintains cooler operating temperatures, and improves overall system performance. Proper energy management is critical for mobile productivity and user satisfaction.

Q95) A user reports that their Windows 10 laptop cannot boot after a recent system update. Which of the following tools should the technician use FIRST to attempt recovery?

A) Windows Recovery Environment (WinRE)
B) Device Manager
C) Disk Cleanup
D) Task Scheduler

Answer: A) Windows Recovery Environment (WinRE)

Explanation:

 When a Windows 10 system fails to boot after a recent update, the Windows Recovery Environment (WinRE) is the first tool a technician should use. WinRE is a dedicated recovery environment integrated into Windows 10 that provides a suite of tools to diagnose and repair startup issues. It can restore the system without affecting user data, making it the safest initial approach for post-update boot failures.

Option A) is correct because WinRE offers multiple recovery options: Startup Repair can automatically detect and fix problems preventing Windows from starting; System Restore reverts the system to a previous restore point before the update; Command Prompt allows advanced troubleshooting such as repairing boot configuration data (BCD); and Safe Mode enables minimal driver loading for further diagnostics. Using these tools in a structured manner allows the technician to restore system functionality efficiently.

Option B) Device Manager is unavailable if Windows cannot boot normally. It is useful for managing drivers in a working system but cannot resolve boot failures caused by updates.

Option C) Disk Cleanup is used to free storage space by removing unnecessary files. While useful for general maintenance, it cannot repair a non-booting system.

Option D) Task Scheduler automates tasks but does not provide the capability to repair startup issues. Scheduled tasks do not impact boot processes directly.

After accessing WinRE, the technician should attempt Startup Repair first. If unsuccessful, performing a System Restore or using advanced command-line tools to fix corrupted boot files is appropriate. Documenting recovery steps ensures consistent handling of future update-related boot failures. Proper use of WinRE minimizes downtime, preserves data integrity, and restores normal system operation efficiently.

Q96) A user reports that their Windows 10 laptop screen goes black intermittently while using a web browser. Which of the following is the MOST likely cause?
A) Outdated graphics driver
B) Low hard drive space
C) Incorrect screen resolution
D) Disabled firewall

Answer: A) Outdated graphics driver

Explanation:

Intermittent black screens during web browsing on a Windows 10 laptop are frequently caused by an outdated or incompatible graphics driver. The graphics driver manages the communication between the operating system, applications, and GPU hardware. If the driver is outdated, corrupted, or incompatible with the current version of Windows or the browser, it can lead to visual artifacts, flickering, or temporary blackouts.

Option A) is correct because the symptoms correspond to driver-related display issues. The technician should check Device Manager to verify the GPU driver version and update it to the latest version provided by the manufacturer. If updating the driver does not resolve the problem, rolling back to a previous stable version may be necessary, particularly after a recent driver update or Windows upgrade. Additionally, disabling hardware acceleration in the web browser can help mitigate display conflicts while browsing. Monitoring GPU temperatures ensures the black screen is not caused by thermal throttling or overheating.

Option B) Low hard drive space can affect performance and the ability to create temporary files but does not cause intermittent black screens. Storage-related issues typically manifest as slow application load times rather than temporary loss of video output.

Option C) Incorrect screen resolution may distort images or make elements appear blurry, but it does not cause the screen to go black intermittently. Resolution issues are static and predictable, unlike driver-related display failures that are dynamic and application-specific.

Option D) Disabled firewall affects network security but does not interfere with GPU operation or visual rendering. Security settings are unrelated to the display subsystem.

After updating or reinstalling the graphics driver, the technician should test the system with different browsers to confirm that the issue is driver-related and not browser-specific. Ensuring Windows updates are applied helps maintain compatibility with hardware and software. These steps improve display stability, prevent further disruptions, and maintain optimal performance during normal operations.

Q97) A user reports that their Windows 10 system frequently freezes during startup. Task Manager shows high disk usage by the process “Antimalware Service Executable.” Which of the following BEST describes this situation?

A) Windows Defender is performing a background scan
B) The hard drive is failing
C) Malware infection
D) Outdated display driver

Answer: A) Windows Defender is performing a background scan

Explanation

 The “Antimalware Service Executable” (MsMpEng.exe) process is part of Windows Defender, responsible for real-time protection and scanning for malware. High CPU or disk usage during system startup can occur if Windows Defender is performing a scheduled or on-demand scan. This behavior can make the system appear unresponsive or slow during boot.

Option A) is correct because Task Manager identifies the high resource usage as the legitimate Windows Defender process. During startup, Windows Defender may scan recently added files, updates, or system files to ensure they are not malicious. While this can temporarily reduce system responsiveness, it is normal and part of maintaining system security. The technician can schedule scans for off-hours, enable limited CPU usage for Defender, or temporarily pause scanning during critical tasks. Monitoring the scan progress ensures that the system returns to normal performance after the scan completes.

Option B) Hard drive failure can result in slow performance, errors, or data corruption. However, if the high resource usage is clearly attributed to Windows Defender, the underlying hardware is likely functioning correctly. Symptoms of hard drive failure include repeated read/write errors, unusual noises, and file corruption.

Option C) Malware infection could cause high CPU usage, but in this scenario, the process identified is a legitimate antivirus process. Running a full malware scan may provide additional reassurance, but the primary cause of the slow startup is Windows Defender activity.

Option D) Outdated display drivers may cause visual artifacts or graphical glitches, but they do not consume significant CPU or disk resources in the context of startup delays caused by the antimalware process.

Once the scan completes, performance should return to normal. Educating users about the expected behavior of Windows Defender helps differentiate between normal security operations and actual system issues. Scheduling scans strategically ensures security without compromising usability during critical work periods.

Q98) A user reports that their Windows 10 laptop cannot connect to any network, even though Wi-Fi is enabled and other devices work fine. Which of the following is the MOST likely cause

A) Disabled or malfunctioning wireless adapter
B) ISP outage
C) Ethernet cable unplugged
D) Incorrect screen resolution

Answer: A) Disabled or malfunctioning wireless adapter

Explanation:

When a Windows 10 laptop cannot connect to any network while other devices function correctly, the issue is likely local to the laptop. The wireless adapter is responsible for detecting and connecting to Wi-Fi networks. If it is disabled in software, turned off via a physical switch, or malfunctioning, the system will not detect available networks.

Option A) is correct because verifying the wireless adapter is the first troubleshooting step. In Device Manager, a functional adapter should appear without warning symbols. A yellow triangle or missing adapter may indicate driver issues or hardware failure. Updating or reinstalling the driver, checking physical switches, and ensuring the wireless service is running can restore connectivity. Using the Windows Network Troubleshooter may automatically detect and repair configuration issues.

Option B) ISP outages affect all devices. Since other devices connect successfully, the ISP is not the root cause.

Option C) Ethernet cable issues do not affect wireless connections. The problem description specifies Wi-Fi, making wired connectivity irrelevant in this scenario.

Option D) Screen resolution affects display clarity but does not influence network connectivity.

After confirming adapter functionality and driver integrity, the technician can test connections to multiple networks to rule out network-specific issues. Ensuring updated drivers and proper adapter configuration restores reliable wireless performance and prevents unnecessary downtime.

Q99) A user reports that their Windows 10 laptop battery drains very quickly, even when idle. Task Manager shows high CPU usage from multiple background processes. Which of the following is the MOST likely cause?

A) Excessive background applications consuming CPU resources
B) Low hard drive free space
C) Disabled firewall
D) Incorrect screen resolution

Answer: A) Excessive background applications consuming CPU resources

Explanation:

Rapid battery drain in a Windows 10 laptop, especially when the system is idle, is often caused by processes consuming significant CPU resources. High CPU activity increases energy consumption, generates heat, and reduces battery longevity. Common causes include cloud synchronization software, auto-updating applications, and resource-intensive utilities running in the background.

Option A) is correct because monitoring Task Manager allows the technician to identify which processes are using CPU resources. Disabling unnecessary startup programs, configuring background applications to reduce activity, and enabling Windows Battery Saver mode help optimize energy consumption. Users should be educated on minimizing background processes and keeping software updated to prevent CPU-intensive behaviors.

Option B) Low hard drive free space affects performance but does not directly cause high CPU usage or battery drain. Storage issues manifest as slower application loading rather than energy consumption spikes.

Option C) Disabled firewall affects network security, not CPU or battery usage. Security settings are unrelated to idle power consumption.

Option D) Incorrect screen resolution affects display quality but does not significantly influence CPU activity or battery life in the context of multiple background processes.

Optimizing background applications and managing system resources ensures longer battery life, prevents overheating, and improves overall system responsiveness. Periodic monitoring and user education help maintain consistent energy efficiency.

Q100) A user reports that their Windows 10 system cannot boot after a recent update. Which of the following tools should the technician use FIRST to attempt recovery?

A) Windows Recovery Environment (WinRE)
B) Device Manager
C) Disk Cleanup
D) Task Scheduler

Answer: A) Windows Recovery Environment (WinRE)

Explanation:

When Windows 10 fails to boot after an update, the Windows Recovery Environment (WinRE) provides the most effective first step for troubleshooting. WinRE is built into the operating system and offers tools for repairing startup issues, restoring the system, and performing advanced diagnostics.

Option A) is correct because WinRE provides multiple recovery options: Startup Repair can automatically detect and fix problems preventing boot; System Restore can revert the system to a previous restore point before the update; Command Prompt allows advanced troubleshooting like repairing the boot configuration data (BCD); Safe Mode enables minimal driver loading to diagnose compatibility issues. Using these tools in a structured approach preserves user data while restoring system functionality.

Option B) Device Manager cannot be accessed if Windows cannot boot. It is used to manage drivers on a functioning system but does not repair startup failures.

Option C) Disk Cleanup removes unnecessary files but cannot resolve a non-booting system. While helpful after booting, it does not address startup failures.

Option D) Task Scheduler automates tasks but has no capacity to repair startup issues. Scheduled tasks do not affect the boot process.

After accessing WinRE, the technician should attempt Startup Repair first. If unsuccessful, System Restore or command-line repairs can resolve corrupted boot files. Documenting recovery procedures ensures efficient handling of future update-related boot issues and restores normal system operation with minimal disruption.