A user called the help desk to report an issue with a laptop. Recently, the user has been unable to click the buttons on the track pad or press some keys on the keyboard. The technician inspector the laptop but does not find any physical damage caused by the user.
Which of the following is the MOST likely cause of the issue?
A. Damaged digitizer
B. Swollen battery
C. Distended capacitors
D. Failed accelerometer
Correct Answer: B
The most likely cause of the issue is that the laptop has a swollen battery, which is a condition where the battery expands due to gas buildup inside the cells. A swollen battery can cause physical damage to the laptop, such as pushing against the track pad or keyboard and preventing them from functioning properly. The technician should inspect the battery and replace it if it is swollen. A damaged digitizer is not the cause of the issue, as the digitizer is a component that converts touch input into digital signals, and it does not affect the track pad or keyboard. Distended capacitors are not the cause either, as capacitors are electronic components that store electric charge, and they do not affect the track pad or keyboard. A failed accelerometer is not the cause as well, as an accelerometer is a sensor that measures acceleration, and it does not affect the track pad or keyboard.
A new HD webcam's image only updates one or two times per second. The specifications indicate the webcam is capable of updating 30 frames per second.
Which of the following is MOST likely causing the issue?
A. The USB 2.0 port has insufficient bandwidth.
B. The Thunderbolt connector is not compatible.
C. The VGA cable does not support a digital signal.
D. The connection should -- instead of STP.
Correct Answer: A
The USB 2.0 port has insufficient bandwidth to support a high-definition webcam that can update 30 frames per second. USB 2.0 has a maximum theoretical bandwidth of 480 Mbps, which may not be enough for HD video streaming. The user should try using a USB 3.0 port or a Thunderbolt connector, which have higher bandwidths and can support HD webcams. The Thunderbolt connector is compatible with USB devices, so it is not the cause of the issue. The VGA cable and the STP cable are not related to the webcam, as they are used for video output and network connection respectively.
Question 33:
Which of the following describes the BEST use case for a client-side hypervisor?
A. By For a software developer who is required to test an application in many environments
B. When the data center environment is out of resources for a new server
C. As a cost-saving measure to allow multiple users on one computer
D. To provide a backup to cloud-based solutions during internet failures
Correct Answer: A
A client-side hypervisor is a virtual machine monitor (VMM) that resides in and virtualizes a user's computer, allowing it to run multiple operating systems (or virtual machines) on shared hardware12. A client-side hypervisor can be useful for a software developer who needs to test an application in many environments, such as different versions of Windows, Linux, or Mac OS. By using a client-side hypervisor, the developer can switch between different virtual machines without rebooting the computer or using multiple physical devices3.
Question 34:
A user is traveling to another country and will be unable to get personal cell phone service after the plane lands. Which of the following should the user update to resolve the issue?
A. CDMA
B. PRL
C. MDM
D. GPS
Correct Answer: B
Updating the preferred roaming list (PRL) is what a user should do to resolve the issue of being unable to get personal cell phone service after traveling to another country. The PRL is a database that contains information about cell towers and frequencies that a phone can use in different areas. Updating the PRL can improve the phone's ability to connect to local networks and avoid roaming charges. CDMA is a type of cellular technology that uses code division multiple access to transmit data over radio frequencies. MDM is an acronym for mobile device management, which is a type of software solution that allows remote management and security of mobile devices. GPS is an acronym for global positioning system, which is a satellite-based navigation system that provides location and time information
Question 35:
A technician is upgrading a computer OS from Windows 7 to Windows 10. During the OS installation, the system is not able to find the hard drive. Which of the following can the technician do to MOST likely fix the issue?
A. Change the partition to MBR
B. Load the HDD drivers using a flash drive.
C. Upgrade the RAM modules.
D. Replace the hard drive.
Correct Answer: B
Loading the hard disk drive (HDD) drivers using a flash drive is the most likely action that can fix the issue of a computer not being able to find the hard drive during an OS installation from Windows 7 to Windows 10. The HDD may have a different interface or controller than what Windows 10 supports by default, such as SATA or RAID, which would require loading additional drivers during the installation process. The technician can use a flash drive to load the drivers from another device or source. Changing the partition to MBR, upgrading the RAM modules, or replacing the hard drive are not likely to fix the issue, as they are not related to the HDD drivers
Question 36:
A virtual file server in the cloud is configured to automatically add compute resources during times of high load on the server. Which of the following describes this cloud feature?
A. File synchronization
B. High availability
C. Rapid elasticity
D. Shared resources
Correct Answer: C
Rapid elasticity is a cloud feature that allows cloud services to scale up or down automatically according to demand or load on the server, without requiring manual intervention or configuration changes by users or administrators.This enables
cloud services to provide optimal performance and efficiency at all times, as well as reducing costs by only using resources when needed.
A technician has verified full system functionality and implemented preventive measures. Which of the following represents the NEXT step the technician should take according to the best practice methodology?
A. Establish a theory of probable cause.
B. Document the findings, actions, and outcomes.
C. Perform a format and system restore.
D. Refer to the vendor's instructions for guidance.
Correct Answer: B
The best practice methodology for troubleshooting is to follow these steps:
Identify the problem.
Establish a theory of probable cause.
Test the theory to determine cause.
Establish a plan of action to resolve the problem and implement the solution. Verify full system functionality and implement preventive measures. Document the findings, actions, and outcomes. Since the technician has already verified full
system functionality and implemented preventive measures, the next step is to document the findings, actions, and outcomes. Verified References: CompTIA A+ Certification Exam Objectives, page 8.
Question 38:
A department sends in a ticket to report a printer is not working. The responding technician sees paper stuck to the fuser, which is much hotter than normal. The (user was just installed a few weeks ago. as indicated by the service history. Which of the following should the technician do NEXT?
A. Disconnect the printer power for troubleshooting.
B. Install a printer roller kit.
C. Replace the overheating fuser.
D. Replace the paper with thicker paper stock.
Correct Answer: A
The first step in troubleshooting a printer issue is to disconnect the printer power to avoid electric shock or further damage to the printer. The technician can then inspect the fuser and determine if it needs to be replaced or repaired. Installing a printer roller kit or replacing the paper with thicker paper stock will not solve the problem of the overheating fuser. Replacing the fuser without disconnecting the power is dangerous and not recommended. References: https://www.comptia.org/certifications/a#examdetails https://www.comptia.org/blog/what-is-a-fuser
Question 39:
An administrator chose a shared-tenant model for a cloud deployment. Which of the following is the MOST likely reason the administrator chose this model?
A. Cost savings
B. Highly available
C. Dedicated hardware
D. Increased security
Correct Answer: A
The shared-tenant model for a cloud deployment, also known as a multi- tenant model, allows multiple customers to use the same resources and infrastructure of the cloud service provider, with each customer's data and applications isolated from one another. This model is often chosen for cost savings, as resources are shared and users only pay for what they use. Therefore, the MOST likely reason that an administrator chose this model is A. Cost savings.
Question 40:
A user is having an issue with the touch screen on a mobile device. When the user touches the screen, the intended target is not selected. Which of the following would be the BEST action for a technician to take to resolve the issue?
A. Calibrate the touch screen.
B. Reset the mobile device.
C. Replace the LED screen.
D. Update the mobile device.
Correct Answer: A
Calibrating the touch screen is the best action to resolve the issue of inaccurate touch input. Calibration adjusts the touch screen's sensitivity and alignment to match the user's touch. Resetting the mobile device could erase user data and settings and may not fix the touch screen issue. Replacing the LED screen or updating the mobile device are unnecessary and costly actions that may not solve the problem.
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