A technician is troubleshooting a classroom projector that shuts down after fifteen minutes of use. Which of the following should the technician do to resolve the issue?
A. Replace the video input cable.
B. Change the bulb.
C. Clean the air filter.
D. Swap the power cord.
Correct Answer: C
Cleaning the air filter is the best action to resolve the issue of a projector that shuts down after fifteen minutes of use. A dirty air filter can cause overheating and trigger the projector's thermal protection mechanism. Replacing the video input cable, changing the bulb, or swapping the power cord are unlikely to solve the overheating issue
Question 92:
A user submitted a help desk ticket to report that the Wi-Fi connection drops every time the microwave is used. A technician suspects the issue is related to interference. Which of the following should the technician do to provide the BEST long-term solution for the issue?
A. Change the Wi-Fi operation channel.
B. Configure the Wi-Fi AP to 5GHz.
C. Increase the power output of the AP.
D. Change the SSID to hidden.
Correct Answer: B
The issue is related to interference from the microwave, which operates at 2.4GHz, the same frequency as some Wi-Fi channels. To avoid this interference, the technician should configure the Wi-Fi access point (AP) to use a 5GHz band,
which has more channels and less interference from other devices. Changing the Wi-Fi operation channel may not solve the problem if the microwave interferes with multiple channels. Increasing the power output of the AP may not overcome
the interference and may cause more interference to other devices. Changing the SSID to hidden does not affect the interference at all, and may make it harder for users to connect to the network.
A technician is installing a USB Wi-Fi card. Which of the following would be the MOST appropriate way for the technician to receive the latest official drivers for the device?
A. Download the drivers from the vendor's website.
B. Allow the OS to install the drivers automatically.
C. Utilize a third-party. non-OEM driver.
D. Run the autoinstall CD.
Correct Answer: A
The most appropriate way for the technician to receive the latest official drivers for a USB Wi-Fi card is to download them from the vendor's website. This ensures that the drivers are compatible, updated, and secure. Allowing the OS to install the drivers automatically may not provide the latest or best drivers for the device. Utilizing a third-party, non-OEM driver could cause compatibility or security issues. Running the autoinstall CD could install outdated or unnecessary software along with the drivers
Question 94:
A technician is setting up three web servers foe a retail company that takes online orders for its products. Which of the following network host services should the technician use to ensure the servers' resources will be utilized efficiently?
A. UTM appliance
B. AAA server
C. Spam gateway
D. Load balancer
Correct Answer: D
A load balancer is a network device or service that distributes incoming network traffic across multiple servers, based on various criteria, such as availability, capacity, performance, or location. A load balancer can ensure that the servers' resources will be utilized efficiently, as well as improve reliability, scalability, and security. A load balancer can be hardware-based or software-based, or a combination of both. Reference: https://www.comptia.org/training/books/a-core-1-220-1101-study-guide (page 79)
Question 95:
Auser is unable to perform contactless payments with a phone. Which of the following functions is MOST likely causing the issue?
A. NFC
B. Hotspot
C. Bluetooth
D. USB
Correct Answer: A
Near field communication (NFC) is a function that enables contactless payments with a phone by allowing it to communicate with compatible devices within close proximity. If NFC is not working properly, the user will not be able to perform contactless payments with the phone. Hotspot is a feature that allows a device to share its internet connection with other devices via Wi-Fi, Bluetooth, or USB. Bluetooth is a wireless technology that allows devices to connect and exchange data over short distances. USB is a standard interface that connects devices such as keyboards, mice, flash drives, etc
Question 96:
Which of the following wireless technologies is used by mobile devices to process payments at kiosks?
A. Wi-Fi 6
B. Bluetooth
C. NFC
D. RFID
Correct Answer: C
NFC stands for near-field communication, which is a wireless technology that allows two devices to exchange data when they are in close proximity (usually within a few centimeters). NFC is commonly used by mobile devices to process payments at kiosks, such as Apple Pay or Google Pay. Wi-Fi 6 is a wireless standard that provides faster speed and lower latency than previous versions of Wi-Fi. Bluetooth is a wireless technology that allows devices to communicate over short distances (usually within 10 meters). RFID stands for radio-frequency identification, which is a wireless technology that uses radio waves to identify and track objects that have RFID tags attached to them
Question 97:
A user is attempting to connect a streaming media device to a hotel's tree wireless internet However, the user is unable to pass through the captive portal. Which of the following would MOST likely allow the user to connect the device to the internet?
A. Connecting to the hotspot on the user's device
B. Disabling the Wi-Fi security on the device
C. Asking the hotel to disable the captive portal on the Wi-Fi
D. Adjusting the date and time stamps on the device to reflect another country
Correct Answer: A
A captive portal is a web page that requires users to agree to terms and conditions, enter credentials, or provide payment information before accessing a wireless network. Some devices, such as streaming media devices, may not have a web browser or a user interface to interact with the captive portal. One possible solution is to connect to the hotspot on the user's device, such as a smartphone or a tablet, and use it as a bridge to access the internet through the wireless network. The user's device can authenticate with the captive portal and share its internet connection with other devices via Wi-Fi, Bluetooth, or USB. Reference: https://partners.comptia.org/docs/default-source/resources/a-core-1- content-guide (page 12)
Question 98:
A user reports a repetitive clicking noise is coming from a personal laptop. A technician notes the laptop's inputs are severely delayed. Which of the following should the technician replace to resolve the issue?
A. The memory
B. The storage device
C. The integrated keyboard
D. The battery
Correct Answer: B
A repetitive clicking noise coming from a laptop is usually a sign of a failing hard disk drive (HDD), which is a type of storage device that uses spinning platters and moving heads to read and write data. A failing HDD can also cause severe
delays in input and output operations, as well as data loss or corruption. The technician should replace the HDD with a new one or upgrade it to a solid state drive (SSD), which is another type of storage device that uses flash memory and
A technician has noticed that a monitored server is receiving a disk failure notice during startup. When the technician clicks to continue, the machine still seems to startup into Windows but at a much slower speed. The technician looks at the BIOS information and sees the machine utilizes a RAID 5 configuration. Which of the following does the technician MOST likely need to perform?
A. Reinstall the HDD drivers.
B. Rebuild The RAID.
C. Replace the failed drivers.
D. Restart the system.
Correct Answer: B
The disk failure notice during startup indicates that one or more disks in the RAID array have failed. The machine still seems to startup into Windows but at a much slower speed because the RAID 5 configuration can tolerate one disk failure and still operate, but with reduced performance and reliability. The technician most likely needs to rebuild the RAID, which means replacing the failed disk(s) and restoring the data from the parity information. Reinstalling the HDD drivers will not fix the disk failure. Replacing the failed drivers is not a valid option, as drivers are software, not hardware. Restarting the system will not fix the disk failure either. References: https://www.comptia.org/blog/what-is- raid-0-1-5-6-10
Question 100:
A user reports that a printer is leaving streaks on printed pages. The paper type and the toner have been replaced. Which of the following should the technician check NEXT to resolve the issue?
A. System board
B. Paper tray
C. Memory
D. Fuser
Correct Answer: D
This is because the fuser is the part of the printer that heats and melts the toner onto the paper. If the fuser is defective or dirty, it can cause streaks or smudges on printed pages. The system board and the memory are not related to the quality of the print output. The paper tray may cause paper jams or misfeeds, but not streaks on the paper.
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