CompTIA 220-1202 A+ Certification Exam: Core 2 Dumps and Practice Test Questions Set 7 Q121-140

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Q121) A user reports that their Windows 10 laptop frequently loses internet connectivity, even though the Wi-Fi signal is strong and other devices work fine. Which of the following should the technician check FIRST?

A) Wireless adapter driver
B) ISP service outage
C) Physical Ethernet cable
D) Screen resolution

Answer: A) Wireless adapter driver

Explanation:

When a Windows 10 laptop loses internet connectivity despite a strong Wi-Fi signal and other devices functioning normally, the problem is usually local to the device itself. The wireless adapter driver plays a critical role in maintaining stable communication with the router. Drivers act as intermediaries between the operating system and the hardware, translating software instructions into device actions. If the driver is outdated, corrupted, or incompatible with the current version of Windows, the laptop may drop connections intermittently, fail to authenticate with the network, or experience network instability.

Option A) is correct because verifying the wireless adapter driver addresses the root cause. The technician should access Device Manager, locate the wireless adapter under “Network adapters,” and check for warning symbols indicating driver problems. Updating the driver from the manufacturer’s website or reinstalling it ensures compatibility with Windows updates and network protocols. Additionally, checking power management settings prevents Windows from turning off the adapter to save power, which can inadvertently cause disconnects. Testing the adapter on different Wi-Fi networks can confirm whether the issue is specific to one network or a broader device problem.

Option B) ISP service outages would affect all devices on the network. Since other devices maintain stable connectivity, the ISP is unlikely to be the cause.

Option C) Physical Ethernet cables are irrelevant for Wi-Fi connections. Problems with cables would only impact wired connections, not wireless performance.

Option D) Screen resolution does not affect network connectivity. Display settings are unrelated to the functioning of the wireless adapter or internet access.

After confirming that the adapter driver is updated and correctly configured, additional troubleshooting may include resetting the network stack, running Windows Network Troubleshooter, or replacing the wireless adapter if hardware failure is suspected. Ensuring proper driver management and network configuration enhances connectivity stability, reduces downtime, and maintains user productivity. Educating users on avoiding network-intensive applications that may strain the wireless adapter also contributes to reliable performance.

Q122) A user reports that their Windows 10 laptop frequently freezes and Task Manager shows high disk usage by “Antimalware Service Executable.” Which of the following BEST describes this situation?

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

Answer: A) Windows Defender performing a background scan

Explanation:

The “Antimalware Service Executable” process (MsMpEng.exe) is a core component of Windows Defender responsible for real-time protection and periodic malware scans. High CPU or disk usage associated with this process is common during background scans, especially if Windows Defender is indexing recently added files, updates, or system changes. Users often interpret these resource spikes as system problems, but they are typically part of normal security operations.

Option A) is correct because Windows Defender periodically scans the system to maintain security and detect malware. During these scans, CPU and disk resources may be consumed heavily, causing temporary freezes, slow application launches, or sluggish performance. Technicians can verify this by monitoring Task Manager to confirm that the resource-intensive process is MsMpEng.exe and correlating it with scheduled scan times. Adjusting scan schedules, limiting CPU usage for Defender, or temporarily pausing scans during critical tasks can alleviate perceived performance issues.

Option B) A failing hard drive may cause system slowdowns, file corruption, and read/write errors. However, if Task Manager clearly identifies Windows Defender as the resource-intensive process, the problem is likely software-related rather than hardware-related. Signs of a failing drive include repetitive errors, unusual noises, and performance degradation across all applications, not just during scans.

Option C) Malware infection can cause high CPU or disk usage, but the observed process is a known legitimate Windows Defender process. Running an additional malware scan may provide reassurance but is unlikely to be the root cause in this scenario.

Option D) An outdated display driver may cause graphical issues, crashes, or flickering but does not typically result in high disk usage or freezes related to system scans. Graphics-related problems affect GPU operations rather than CPU and disk-intensive background scans.

Once the background scan completes, normal performance should resume. Educating users about the expected behavior of Windows Defender and scheduling scans strategically helps prevent unnecessary concern. Monitoring resource usage during scans ensures the system operates efficiently while maintaining security. Implementing best practices for security management minimizes interference with user productivity.

Q123) A user reports that their Windows 10 laptop cannot print to a locally connected USB printer, even though other USB devices function correctly. Which of the following should the technician check FIRST?

A) Printer driver installation
B) Hard drive free space
C) Screen resolution
D) Firewall settings

Answer: A) Printer driver installation

Explanation:

When a locally connected USB printer fails to print while other USB devices function normally, the most likely cause is a missing, outdated, or corrupted printer driver. Drivers are crucial for translating Windows print commands into instructions the printer can understand. Without a properly installed driver, the system cannot communicate with the printer, resulting in failed print jobs even if the USB connection is operational.

Option A) is correct because verifying the printer driver addresses the core issue. The technician should access Device Manager to check for warnings under “Printers” or “Universal Serial Bus controllers.” Installing the latest driver from the manufacturer or using Windows Update ensures compatibility with the OS. Reinstalling the driver can fix corruption issues. Additionally, confirming that the printer is set as the default device and that the Print Spooler service is running ensures smooth operation. Testing the printer on another system can determine if the issue is driver-specific or hardware-related.

Option B) Hard drive space affects overall system performance but typically does not prevent a single printer from functioning. Only in extreme cases, where the spooler cannot write temporary files due to lack of space, would it impact printing.

Option C) Screen resolution affects display quality but has no effect on printer functionality. Adjusting resolution will not resolve USB printer issues.

Option D) Firewall settings influence network traffic and security but are irrelevant for a locally connected USB printer. The issue resides in the printer driver or spooler service rather than network configuration.

After verifying driver installation, the technician should confirm USB port functionality and ensure the printer works on other systems. Proper driver installation and spooler configuration ensure reliable printing, prevent user frustration, and maintain workflow efficiency.

Q124) A user reports that their Windows 10 laptop battery drains rapidly even when the device is idle. Task Manager shows high CPU usage from multiple 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) Disabled firewall
D) Incorrect screen resolution

Answer: A) Excessive background applications consuming CPU resources

Explanation:

Rapid battery drain while idle is often caused by background applications consuming significant CPU resources. Even when the laptop appears idle, processes such as cloud sync services, auto-update programs, and system maintenance utilities can keep the CPU active. High CPU usage increases energy consumption, generates heat, and reduces battery life.

Option A) is correct because excessive background activity directly causes the observed symptoms. The technician should review Task Manager to identify processes consuming CPU resources and adjust startup programs accordingly. Enabling Windows Battery Saver mode and configuring power plans to limit CPU performance during idle periods improves energy efficiency. Educating users on minimizing unnecessary background processes and closing resource-intensive applications when not in use contributes to longer battery life.

Option B) Low hard drive free space may slow the system but does not directly cause high CPU usage or battery drain. Storage constraints affect file access speed rather than idle power consumption.

Option C) Disabled firewall affects network security but does not influence CPU utilization or power usage. Security software controls traffic and system access but does not cause battery drain during idle operation.

Option D) Incorrect screen resolution impacts display clarity but does not affect CPU-intensive background processes or energy consumption. The underlying cause of battery drain is unrelated to visual settings.

Additional measures include scheduling updates and maintenance tasks while plugged in, uninstalling unnecessary applications, and monitoring system resources to prevent repeated drain. Proper management of background processes ensures longer battery life, reduces system heat, and maintains optimal performance.

Q125) A user reports that their Windows 10 laptop screen flickers intermittently while opening certain applications. 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:

 Intermittent screen flickering in specific applications is often caused by outdated, corrupted, or incompatible display drivers. The display driver acts as the communication link between the operating system and GPU, translating rendering instructions. Applications that utilize hardware acceleration, DirectX, or OpenGL may exacerbate flickering if the driver cannot properly handle graphical tasks.

Option A) is correct because updating or reinstalling the display driver addresses the issue. The technician should check Device Manager for warnings or errors under “Display adapters.” Installing the latest driver from the manufacturer ensures compatibility with the OS and applications. If flickering began after a recent update, rolling back to a stable driver version may resolve the problem. Disabling hardware acceleration in affected applications can mitigate flickering while preserving functionality. Ensuring Windows updates are applied prevents driver conflicts.

Option B) Low hard drive space affects system performance and temporary file creation but does not cause visual anomalies such as flickering.

Option C) Incorrect screen resolution may distort images but does not produce intermittent flickering. Resolution issues are predictable and static, not dynamic like driver-related flicker.

Option D) Disabled firewall affects network security but does not impact GPU operation or application rendering. Display anomalies are unrelated to firewall settings.

After updating the driver and adjusting application settings, the technician should test multiple applications to confirm stability. Monitoring GPU performance and temperature ensures hardware integrity. Proper driver management prevents visual disruptions, enhances the user experience, and ensures reliable graphical performance across applications.

Q126) A user reports that their Windows 10 laptop cannot connect to a Wi-Fi network, while other devices on the same network connect without issues. Which of the following should the technician check FIRST?

A) Wireless adapter driver
B) ISP service outage
C) Physical Ethernet cable
D) Screen resolution

Answer: A) Wireless adapter driver

Explanation:

When a Windows 10 laptop cannot connect to Wi-Fi, yet other devices on the same network connect successfully, the problem is likely local to the laptop. The wireless adapter and its driver are responsible for handling wireless network communication, including scanning for available networks, authenticating connections, maintaining signal stability, and managing data transmission. If the driver is outdated, incompatible with the current Windows version, or corrupted, the laptop may fail to establish or maintain a connection, even when the network signal is strong.

Option A) is correct because the wireless adapter driver directly impacts connectivity. The technician should open Device Manager and verify that the wireless adapter is recognized and functioning properly. Warning icons or “unknown device” labels indicate driver or hardware issues. Updating the driver from the manufacturer’s website or reinstalling it using Windows Update ensures compatibility with the operating system. Power management settings should also be reviewed, as Windows may turn off the wireless adapter to save energy, causing intermittent disconnections. Testing the adapter on another network can help determine whether the issue is network-specific or adapter-specific.

Option B) ISP service outages would affect all devices. Since other devices on the same network function correctly, the ISP is not the source of the issue.

Option C) Physical Ethernet cables do not affect Wi-Fi connectivity. Cable issues are only relevant for wired connections and do not influence wireless performance.

Option D) Screen resolution is unrelated to network functionality. Adjusting the display settings has no effect on Wi-Fi connectivity or stability.

Once the wireless adapter driver is confirmed to be up to date and properly configured, additional troubleshooting steps may include resetting the network stack, running the Windows Network Troubleshooter, and replacing the adapter if hardware failure is suspected. Proper driver management ensures stable connectivity, reduces downtime, and maintains productivity while preventing recurring network issues.

Q127) A user reports that their Windows 10 laptop frequently displays “Low Disk Space” warnings on the C: drive. Which of the following should the technician do FIRST?

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 on Windows 10 typically indicate that the primary storage drive is nearly full. The C: drive must maintain sufficient free space for temporary files, page files, Windows updates, and restore points. When the drive approaches capacity, system performance slows, updates may fail, and applications may not function properly. Addressing disk space issues promptly ensures system stability and prevents operational problems.

Option A) is correct because removing unnecessary files and using Disk Cleanup directly increases available storage. Disk Cleanup removes temporary files, cached data, old Windows update files, recycle bin contents, and other non-essential items. Uninstalling unused applications and moving large files to external storage or cloud solutions further optimizes space. Enabling Storage Sense in Windows 10 automates cleanup tasks and helps maintain optimal free space. Regular maintenance ensures that Windows and applications continue to operate efficiently.

Option B) Upgrading the CPU improves processing speed but does not increase storage capacity. CPU performance has no direct effect on low disk space warnings.

Option C) Updating the graphics driver enhances visual performance but does not impact storage availability. Storage-related warnings remain unaffected by GPU updates.

Option D) Replacing RAM improves system memory for multitasking but does not increase disk storage. Low disk space issues persist independently of memory upgrades.

After performing Disk Cleanup and file removal, the technician should monitor disk usage and ensure that at least 10–15% of the C: drive remains free. Additional long-term solutions include upgrading to a larger SSD, using secondary storage drives, or routinely archiving data. Proper disk management improves system performance, prevents errors, and extends the lifespan of the storage device.

 

Q128) A user reports that their Windows 10 laptop frequently freezes during startup, and Task Manager identifies high disk usage by “Windows Modules Installer Worker.” Which of the following is the MOST likely cause?

A) Windows is installing updates
B) Failing hard drive
C) Malware infection
D) Outdated display driver

Answer: A) Windows is installing updates

Explanation:

The “Windows Modules Installer Worker” (TiWorker.exe) is a legitimate Windows process responsible for installing, modifying, or removing Windows updates and optional components. High disk and CPU usage during startup often occurs when Windows is performing update-related tasks. TiWorker.exe performs file integrity checks, prepares updates for installation, and may perform background servicing, which temporarily increases resource consumption and can make the system appear unresponsive.

Option A) is correct because the high resource usage is a normal consequence of Windows update operations. The technician should allow the process to complete and monitor progress through Task Manager or Event Viewer. Scheduling updates for non-critical times can prevent disruptions. If the process consistently consumes excessive resources, the technician may investigate Windows Update logs for errors, verify disk health, or perform servicing commands like “DISM” and “SFC” to repair system files.

Option B) A failing hard drive can cause system slowdowns and freezing, but the resource usage is typically observed across all processes rather than isolated to TiWorker.exe. Physical symptoms like clicking sounds or repeated file errors are indicators of hardware failure.

Option C) Malware infection can cause high CPU usage, but if the identified process is a legitimate Windows service, malware is unlikely. Running a full malware scan can confirm system integrity as a precaution.

Option D) An outdated display driver affects graphical performance but does not cause high CPU or disk usage by Windows Modules Installer Worker. Driver issues typically manifest as display flickering, artifacts, or crashes.

Once the update process completes, system performance should normalize. Educating users about expected update behavior prevents unnecessary concern. Administrators can schedule update maintenance or optimize update settings to reduce system impact during critical work hours, maintaining stability while ensuring security compliance.

 

Q129) A user reports that their Windows 10 laptop battery drains rapidly, even when idle, and Task Manager shows multiple background processes consuming high CPU. 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 while the laptop appears idle is typically caused by background applications consuming CPU cycles. Programs such as cloud sync tools, update services, indexing processes, and system utilities can remain active even when the user is not interacting with the system. High CPU usage increases energy consumption, generates heat, and accelerates battery depletion.

Option A) is correct because identifying and managing CPU-intensive background applications addresses the root cause. Task Manager helps locate processes with high resource usage, and unnecessary startup programs can be disabled. Configuring power plans to limit CPU performance during idle periods and enabling Windows Battery Saver mode further preserves battery life. Users should be advised to close resource-intensive applications when not in use and monitor background activity regularly.

Option B) Low hard drive free space slows system performance but does not directly increase CPU usage or drain the battery.

Option C) Disabled firewall affects network security but does not influence CPU utilization or battery consumption. Security software governs traffic but is not the primary source of idle energy drain.

Option D) Incorrect screen resolution impacts display clarity but does not contribute to high CPU usage or battery drain. Visual settings are unrelated to resource-intensive background processes.

Additional steps include scheduling maintenance tasks while the laptop is plugged in, uninstalling unnecessary applications, and monitoring CPU usage patterns. Proper management of background processes and system resources ensures extended battery life, prevents overheating, and maintains consistent performance.

Q130) A user reports that their Windows 10 laptop screen flickers intermittently while opening certain applications. 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:

Intermittent screen flickering during application use is commonly caused by outdated or incompatible display drivers. The driver acts as the bridge between the operating system and the GPU, translating graphical commands. Applications that utilize hardware acceleration, DirectX, or OpenGL may reveal incompatibilities in the driver, resulting in flickering, tearing, or temporary blackouts.

Option A) is correct because updating or reinstalling the display driver resolves compatibility issues. The technician should verify driver status in Device Manager, update it via the manufacturer’s website, or roll back if the issue began after a recent update. Disabling hardware acceleration in affected applications may temporarily mitigate flickering. Ensuring Windows updates are applied helps maintain driver compatibility and overall system stability.

Option B) Low hard drive space affects overall system performance but does not cause visual anomalies like flickering.

Option C) Incorrect screen resolution may distort images but does not create intermittent flickering. Resolution issues are static, unlike dynamic driver-related visual problems.

Option D) Disabled firewall affects network security but does not impact display functionality or GPU performance. Flickering is unrelated to firewall settings.

After updating the driver and adjusting application settings, the technician should test multiple programs to confirm resolution. Monitoring GPU performance and temperature ensures hardware integrity. Proper driver management guarantees stable visual output, prevents display disruptions, and enhances user experience during application use.

Q131) A user reports that their Windows 10 laptop 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 laptop fails to boot following an update, the Windows Recovery Environment (WinRE) provides the first and most effective recovery option. WinRE is a specialized environment built into Windows to facilitate troubleshooting and repairing startup issues, system restore operations, and advanced command-line repair tasks. Using WinRE preserves user data whenever possible and minimizes the need for a full reinstall.

Option A) is correct because WinRE includes tools such as Startup Repair, System Restore, Command Prompt, Safe Mode, and recovery options for advanced troubleshooting. Startup Repair automatically identifies and resolves issues that prevent Windows from starting, such as corrupted boot files, misconfigured updates, or missing system components. System Restore allows the technician to revert the system to a previous restore point, undoing problematic updates while maintaining user files. Command Prompt provides advanced repair options like rebuilding the Boot Configuration Data (BCD), checking disk integrity with CHKDSK, and running system file repairs with SFC. Safe Mode loads minimal drivers and services, allowing the technician to isolate driver or software conflicts causing startup failures.

Option B) Device Manager is inaccessible if Windows cannot boot. Device Manager is primarily used for managing drivers and devices in a functioning system, not for recovering a non-booting OS.

Option C) Disk Cleanup removes temporary files and frees storage space but cannot repair startup failures caused by updates. This tool is only useful after boot recovery to maintain system performance.

Option D) Task Scheduler automates routine tasks but does not affect the boot process. Scheduled tasks cannot resolve startup issues caused by update failures or system corruption.

After entering WinRE, the technician should attempt Startup Repair first. If unsuccessful, System Restore, Safe Mode, or command-line repairs provide structured approaches to recover functionality. Documenting recovery steps ensures efficient resolution of future update-related boot failures. Proper use of WinRE restores system operability while safeguarding user data and maintaining productivity.

Q132) A user reports that their Windows 10 laptop cannot print to a network printer, although other users on the same network can print successfully. Which of the following should the technician check FIRST?

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

Answer: A) User permissions on the printer

Explanation:

When a single user cannot print to a network printer while others can, the issue is most likely due to insufficient permissions. Windows manages access to shared printers through security settings that determine who can print, manage printer properties, or see the printer on the network. If the user lacks the required “Print” permission, print jobs will fail even if the printer itself is fully functional.

Option A) is correct because verifying and adjusting user permissions directly addresses the problem. The technician should access the printer properties on the host computer or print server and review the Security tab. Granting the affected user explicit print permissions or adding them to a group with printing rights resolves access issues. After permissions are updated, the user may need to reconnect to the printer or restart the Print Spooler service to apply changes.

Option B) Printer toner levels affect print quality, not access. Low toner would result in faded prints but would not prevent a single user from sending jobs while others print normally.

Option C) Hard drive free space impacts overall system performance but does not directly affect network printer access. Only extreme low disk space could potentially interfere with the Print Spooler service.

Option D) BIOS version does not influence access to network printers. Printer permissions and sharing are managed entirely at the operating system level.

After confirming permissions, the technician may verify that the user has the correct printer driver installed, that the Print Spooler service is running, and that network connectivity to the print server is functional. Proper management of user permissions ensures secure and reliable printing while minimizing support calls and maintaining workflow efficiency.

Q133) 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 in web browsers are commonly caused by outdated, corrupted, or incompatible graphics drivers. Modern web browsers use hardware acceleration to render videos, animations, and complex page content. If the GPU driver cannot properly handle these tasks, it may result in flickering, blackouts, or other display anomalies.

Option A) is correct because updating or reinstalling the graphics driver addresses compatibility issues. The technician should verify the driver status in Device Manager, install the latest version from the manufacturer’s website, or roll back to a stable driver version if flickering began after a recent update. Disabling hardware acceleration in the browser may temporarily mitigate blackouts while maintaining usability. Ensuring that Windows updates are applied helps maintain driver stability and compatibility.

Option B) Low hard drive space may reduce system performance but does not cause intermittent black screens. Storage issues do not typically impact GPU rendering during browser activity.

Option C) Incorrect screen resolution may distort images but does not produce intermittent blackouts. Resolution problems are static and predictable, unlike driver-related display anomalies.

Option D) Disabled firewall affects network security but does not interfere with GPU operations. Display-related issues are independent of firewall configuration.

After updating drivers and adjusting application settings, the technician should test multiple browsers and applications to confirm stability. Monitoring GPU usage and temperature ensures hardware integrity. Proper driver management guarantees reliable visual output, enhances the user experience, and prevents graphical disruptions during web browsing or other GPU-intensive activities.

Q134) A user reports that their Windows 10 laptop battery drains rapidly even when the device is idle. Task Manager shows multiple background processes consuming high CPU. 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 on a Windows 10 laptop during idle periods is typically caused by background processes consuming significant CPU resources. Applications such as cloud sync clients, update agents, indexing services, and system maintenance utilities can remain active even when the user is not interacting with the system. High CPU usage during idle increases power consumption, generates heat, and significantly reduces battery life.

Option A) is correct because identifying and managing CPU-intensive background applications addresses the root cause. Task Manager can be used to identify processes consuming resources, and unnecessary startup applications can be disabled. Configuring power plans to reduce CPU performance during idle periods and enabling Windows Battery Saver mode helps extend battery life. Educating users to close resource-intensive applications and minimize background activity further preserves energy.

Option B) Low hard drive free space affects overall performance but does not directly cause high CPU usage or battery drain.

Option C) Disabled firewall affects network security but does not impact CPU consumption or energy use.

Option D) Incorrect screen resolution affects display quality but does not lead to high CPU usage or battery depletion.

Additional measures include scheduling maintenance tasks while plugged in, uninstalling unneeded software, and monitoring CPU usage patterns. Proper management of background processes ensures longer battery life, reduces system heat, and maintains system responsiveness during both active and idle periods.

Q135) 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) Firewall or antivirus settings blocking VPN traffic
B) ISP service status
C) Physical Ethernet cable
D) Screen resolution

Answer: A) Firewall or antivirus settings blocking VPN traffic

Explanation:

If a VPN functions on other devices but fails on a specific Windows 10 laptop, the issue is most likely local to the system. Firewalls and antivirus software can block VPN protocols or client applications, preventing secure tunneling and authentication. This is a common cause of VPN connectivity problems that affect only one device while others on the same network work correctly.

Option A) is correct because the firewall or antivirus may be blocking VPN traffic. The technician should temporarily disable the security software to test the connection. If the VPN successfully connects, the software is the source of the block, and the technician can configure exceptions or open the required ports for the VPN client while maintaining system security. Verifying VPN client configuration, updating software, and confirming credentials ensures proper communication with the VPN server.

Option B) ISP service outages would affect all devices. Since other devices connect successfully, the ISP is not the source of the issue.

Option C) Physical Ethernet cables do not affect VPN connections over Wi-Fi. Wired connections are irrelevant to wireless VPN connectivity unless the user is specifically using a wired network.

Option D) Screen resolution does not impact VPN functionality. Display settings are unrelated to secure network tunneling or authentication processes.

Once firewall or antivirus settings are properly configured, the technician should monitor VPN stability, test multiple connections, and ensure that VPN logs indicate successful authentication. Proper security configuration allows reliable VPN access while maintaining system protection and network integrity.

Q136) A user reports that their Windows 10 laptop frequently freezes during startup, and Task Manager identifies high CPU usage by “Windows Modules Installer Worker.” Which of the following is the MOST likely cause?

A) Windows is installing updates
B) Failing hard drive
C) Malware infection
D) Outdated display driver

Answer: A) Windows is installing updates

Explanation:

 The “Windows Modules Installer Worker” (TiWorker.exe) is a legitimate Windows process responsible for installing, removing, and maintaining Windows updates and optional system components. High CPU usage during startup often indicates that Windows is actively installing or preparing updates, which can temporarily consume significant system resources, causing the system to appear unresponsive or slow.

Option A) is correct because Windows Modules Installer Worker is performing normal maintenance tasks. During cumulative updates, feature upgrades, or after prolonged periods without updates, TiWorker.exe runs in the background and uses CPU, memory, and disk resources. This process may last several minutes or even hours, depending on the size and number of updates. Technicians should allow the process to complete, monitor its progress through Task Manager or Event Viewer, and educate users that this is expected behavior. Scheduling updates during off-peak hours can minimize disruption to productivity.

Option B) A failing hard drive may cause general system slowdowns, repeated file errors, or unusual noises. However, if Task Manager clearly identifies TiWorker.exe as consuming resources, the issue is software-related rather than a hardware failure. Signs of a failing drive include file corruption, slow access times, or system crashes across multiple applications, not isolated high CPU usage from a Windows update process.

Option C) Malware infection can generate high CPU usage, but in this scenario, the process identified is a known legitimate Windows service. Running a full malware scan can provide reassurance, but it is unlikely to be the root cause.

Option D) An outdated display driver affects graphical performance, causing flickering, artifacts, or display crashes, but does not lead to high CPU usage by system update processes. Graphics-related issues impact GPU rather than CPU-intensive background tasks.

Once updates complete, system performance should return to normal. Administrators can configure Windows Update settings, use Group Policy to defer updates, and schedule maintenance tasks to prevent user disruption. Proper monitoring and management of Windows updates ensure security, stability, and optimal system performance.

Q137) A user reports that their Windows 10 laptop cannot connect to Wi-Fi, although other devices on the same network work correctly. Which of the following should the technician check FIRST?

A) Wireless adapter driver
B) ISP service outage
C) Physical Ethernet cable
D) Screen resolution

Answer: A) Wireless adapter driver

Explanation:

 When a single Windows 10 laptop fails to connect to Wi-Fi while other devices maintain stable connectivity, the issue is most likely local to the device. The wireless adapter and its driver are essential for detecting networks, authenticating connections, and maintaining signal stability. Outdated, incompatible, or corrupted drivers can prevent the laptop from connecting, even if the Wi-Fi signal is strong.

Option A) is correct because verifying and updating the wireless adapter driver addresses the root cause. The technician should check Device Manager for any warning icons, update the driver from the manufacturer’s website, or reinstall it via Windows Update. Power management settings should be reviewed to ensure Windows is not turning off the adapter to save energy, which can cause intermittent disconnections. Testing connectivity on different networks can confirm whether the problem is adapter-specific or network-specific.

Option B) ISP service outages affect all devices on the network. Since other devices are functioning normally, the ISP is not the issue.

Option C) Physical Ethernet cables are irrelevant for wireless connections. Problems with Ethernet cables would only impact wired network performance.

Option D) Screen resolution is unrelated to network connectivity. Display settings do not affect the wireless adapter or Wi-Fi performance.

After confirming the driver is up to date and properly configured, additional troubleshooting may include resetting the network stack, running the Windows Network Troubleshooter, and replacing the adapter if hardware failure is suspected. Proper driver and network configuration ensures stable connectivity, minimizes downtime, and maintains productivity.

Q138) A user reports that their Windows 10 laptop screen flickers intermittently when opening certain applications. 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:

 Intermittent screen flickering in specific applications is commonly caused by outdated, corrupted, or incompatible graphics drivers. The display driver serves as a communication link between Windows and the GPU, translating rendering instructions for applications and the operating system. Applications that leverage hardware acceleration, DirectX, or OpenGL can exacerbate driver-related issues, resulting in flickering, screen tearing, or temporary blackouts.

Option A) is correct because updating or reinstalling the display driver resolves the issue. The technician should verify the driver status in Device Manager, update it via the manufacturer’s website, or roll back to a stable version if the problem began after a recent update. Disabling hardware acceleration in affected applications may temporarily mitigate flickering while maintaining functionality. Ensuring Windows updates are installed helps maintain driver compatibility and system stability.

Option B) Low hard drive space affects system performance but does not directly cause display flickering. Storage issues do not manifest as intermittent visual anomalies.

Option C) Incorrect screen resolution may distort images but does not create flickering. Resolution issues are predictable and static, unlike driver-related dynamic display problems.

Option D) Disabled firewall impacts network security but does not interfere with GPU performance or application rendering. Flickering is unrelated to firewall settings.

After updating the driver and adjusting application settings, the technician should test multiple applications to confirm resolution. Monitoring GPU performance and temperature ensures hardware integrity. Proper driver management guarantees stable visual output and prevents graphical disruptions during everyday use.

Q139) A user reports that their Windows 10 laptop cannot print to a locally connected USB printer, even though other USB devices function correctly. Which of the following should the technician check FIRST?

A) Printer driver installation
B) Hard drive free space
C) Screen resolution
D) Firewall settings

Answer: A) Printer driver installation

Explanation:

When a locally connected USB printer fails while other USB devices work properly, the most likely cause is a missing, outdated, or corrupted printer driver. Drivers allow Windows to communicate with the printer, translating print commands into device-specific instructions. Without a properly installed driver, print jobs cannot be processed even if the USB connection is functional.

Option A) is correct because verifying and updating the printer driver directly addresses the issue. The technician should check Device Manager for warnings under “Printers” or “Universal Serial Bus controllers,” and install the latest driver from the manufacturer’s website. Reinstalling the driver can correct corruption problems. Additionally, confirming that the printer is set as the default device and that the Print Spooler service is running ensures smooth operation. Testing the printer on another computer helps determine if the problem is driver-specific or hardware-related.

Option B) Low hard drive space affects overall system performance but does not prevent a single printer from functioning. Only extreme low storage affecting the Print Spooler could impact printing.

Option C) Screen resolution affects display quality but does not influence printer functionality.

Option D) Firewall settings govern network traffic and security but are irrelevant for a locally connected USB printer.

After confirming driver installation, the technician should verify USB port functionality and test the printer on other systems. Proper driver installation ensures reliable printing and prevents workflow disruption.

Q140) 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) Firewall or antivirus settings blocking VPN traffic
B) ISP service status
C) Physical Ethernet cable
D) Screen resolution

Answer: A) Firewall or antivirus settings blocking VPN traffic

Explanation:

If a VPN works on other devices but fails on a specific Windows 10 laptop, the problem is most likely local. Firewalls and antivirus programs can block VPN protocols, ports, or client applications, preventing secure tunneling and authentication. Local security software configuration is a common cause of VPN connectivity issues that affect only one device.

Option A) is correct because firewall or antivirus restrictions often prevent VPN connections. The technician should temporarily disable security software to test the VPN connection. If the VPN works when security software is disabled, the technician can configure exceptions or open necessary ports to allow VPN traffic while maintaining system protection. Checking VPN client configuration, updating software, and confirming credentials ensures proper operation.

Option B) ISP service outages affect all devices. Since other devices can connect, the ISP is not the source of the problem.

Option C) Physical Ethernet cables are only relevant for wired connections and do not affect VPN over Wi-Fi.

Option D) Screen resolution does not impact VPN functionality. Display settings are unrelated to secure network tunneling.

After configuring security software to allow VPN access, the technician should test the connection for stability and monitor logs to confirm successful authentication. Proper configuration ensures reliable VPN access while maintaining system security.