- (Topic 4)
A customer is reporting that some of the keys at the bottom edge on a laptop are hard to press and the track pad buttons require significant force to click. The technician inspects the laptop and does not notice any cracks or other damage to the chassis or screen. Which of the following is the most likely cause of the issue?
Correct Answer:
C
A swollen battery is the most likely cause of the issue that the customer is reporting. A swollen battery is a battery that has expanded in size due to a chemical reaction, gas buildup, or overheating. A swollen battery can cause pressure on the laptop’s chassis, keyboard, track pad, and other components, making them hard to press or click. A swollen battery can also pose a fire hazard and damage the laptop’s performance and lifespan. The other options are not as likely or relevant to the issue. Dropping the laptop may cause cracks or other visible damage to the chassis or screen, but the technician did not notice any. The digitizer is the part of the laptop that converts touch input into digital signals, and it has nothing to do with the keyboard or the track pad buttons. An open bottle of rubbing alcohol falling onto the keyboard may cause liquid damage, corrosion, or short circuits, but it would not affect the track pad buttons or the bottom edge of the keyboard.
To troubleshoot and resolve the issue, the technician should remove the battery from the laptop and inspect it for signs of swelling, such as bulging, deformation, or leakage. The technician should also check the laptop’s chassis, keyboard, and track pad for any signs of damage or warping caused by the battery. The technician should then replace the swollen battery with a new one that is compatible with the laptop’s model and specifications. The technician should also dispose of the swollen battery properly and safely, following the local regulations and guidelines.
References:
✑ CompTIA A+ Certification Exam Core 1 Objectives1
✑ The Official CompTIA A+ Core 1 Student Guide (Exam 220-1101) eBook2
✑ How to Fix a Swollen Laptop Battery - Lifewire3
✑ How to Tell If Your Laptop Battery Is Swollen - Techwalla4
- (Topic 2)
Which of the following types of devices MOST often uses a Thunderbolt cable?
Correct Answer:
C
Thunderbolt cables are commonly used to connect Apple laptops to external displays or other devices. While Thunderbolt is available on some Windows and Chromebook devices, it is most commonly associated with Apple products. References: https://www.intel.com/content/www/us/en/products/docs/io/thunderbolt/thunderbolt- technology-general.html
- (Topic 1)
A user on a SOHO network is unable to watch online videos, even at 240 pixels. The technician runs ipconfig from the user's computer and records the following:
The technician then connects a test laptop to the router via the user's Cat 5 cable and records the following information:
Which of the following is MOST likely causing the user's issue?
Correct Answer:
B
Based on the information recorded by the technician, the network connection appears to be functioning normally. The user's computer is properly configured with an IPv4 address, subnet mask, and default gateway, which should allow the user to access the internet and online videos. The high download and upload speeds and low ping time recorded from the test laptop also indicate that the network is working well. However, the user's inability to watch online videos suggests that there might be an issue with the network card (NIC) on the user's computer. The NIC might be faulty or malfunctioning, which is preventing the computer from receiving and processing the video data. The technician should try replacing the NIC to resolve the issue.
- (Topic 1)
A remote user reports connectivity issues with the local internet provider. Even after a technician reboots the modem supplied by the ISP. the issue persists. Which of the following would BEST establish the connection in minimal time?
Correct Answer:
C
Using a mobile hotspot is the best way to establish an internet connection in minimal time for a remote user who is experiencing connectivity issues with the local internet provider. A mobile hotspot can be set up quickly and provides a reliable connection using cellular data. References: CompTIA A+ Certification Exam Objectives 1001, 3.4
- (Topic 1)
A technician unboxed a new computer, plugged it in to a UPS. and connected the requested peripherals. The computer lights and fans turn on, but the technician hears three loud, consecutive beeps during boot. Which of the following actions will remediate the issue?
Correct Answer:
D
Three beeps indicate a "base memory read/write test error". Check out "beep codes" for more information.
https://en.wikipedia.org/wiki/Power-on_self- test#POST_beep_codes_on_CompTIA_A.2B_certification_exam
Reseating the RAM is the best course of action to remediate the issue of three consecutive beeps during boot, as it may indicate a RAM failure or loose connection. By reseating the RAM, the technician can ensure that the connection is secure and the computer should boot normally. References: CompTIA A+ Certification Exam Objectives 1001, 1.9
