220-1101 Exam Dumps - CompTIA A+ Certification Exam: Core 1

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

An ONT, or Optical Network Terminal, is a device that converts fiber network signals from light into electric signals that can be used by a Wi-Fi router. An ONT is an interface between the fiber optic network that carries optical signals and the devices that use electrical signals, such as routers, telephones, or computers. An ONT is similar to a modem for fiber internet, as it allows the devices to communicate with the internet service provider (ISP) and access the internet.

References:

The Official CompTIA A+ Core 1 Student Guide (Exam 220-1101) eBook, page 4-111

What Is an ONT? Optical Network Terminals Explained l Reviews.org2

What Is An ONT & How is it Used in Fiber Networks? - STL Tech3

The most important specification that the technician should verify before installing the new power supply is A. The wattage.

The wattage of a power supply is the measure of how much power it can deliver to the components of a computer. The wattage of a power supply should match or exceed the total power consumption of the computer, otherwise the computer may not function properly or may experience instability, overheating, or damage12.

To calculate the total power consumption of a computer, the technician can use a tool such as a power supply calculator, which can estimate the required wattage based on the components and features of the computer. For example, using one of the web search results3, I entered the following information:

•CPU: 3 GHz processor

•GPU: High-end graphics card

•RAM: 16 GB DDR4

•SSD: 1 x 500 GB

•HDD: 1 x 1 TB

•Optical Drive: 1 x DVD-RW

•Fans: 2 x 120 mm

•Other Devices: Keyboard, Mouse, Monitor

The tool estimated that the recommended PSU wattage for this computer is 550 W. Therefore, the technician should verify that the new power supply has at least this wattage before installing it.

The chassis ventilation, the motherboard’s firmware, and the cables’ color coding are not as important as the wattage for installing a new power supply. The chassis ventilation is related to the airflow and cooling of the computer, which can affect the performance and lifespan of the components. The motherboard’s firmware is the software that controls the basic functions of the motherboard, such as booting, input/output, and memory management. The cables’ color coding is a standard way of identifying the function and polarity of the wires in a power supply. However, none of these specifications are directly related to the power delivery or compatibility of the new power supply.

When a laptop screen fails to mirror to a television despite being correctly connected via an HDMI cable, a common issue is that the television is set to the wrong input source. Modern televisions have multiple input options (e.g., HDMI 1, HDMI 2, AV, etc.), and selecting the correct input that corresponds to the port the HDMI cable is connected to is essential for displaying the laptop's screen. The blinking logo on the TV screen typically indicates that the TV is functioning but not receiving a signal from the selected input source. Changing the TV's input to the correct HDMI port should resolve the issue and allow the laptop screen to mirror onto the TV.References: Hardware 1101.docx, "Connecting External Displays" section.

Port flapping, also known as link flapping, is a network issue that causes a switch port’s state to fluctuate between up and down within short periods of time. This instability affects network connectivity and performance. Port flapping can be caused by various factors, such as faulty cables, hardware issues, configuration issues, or other network issues12. In this scenario, the user’s desktop computer is connected via an Ethernet cable and often drops the connection, while no other network users on the same floor are reporting issues. The administrator verified that all authentication systems are working as intended and the Ethernet cable was replaced. Therefore, the most likely cause of the issue is port flapping on the switch port that connects to the user’s computer.

References

1: Port flapping – Definition, common causes, and troubleshoot …

2: Solved: Port Flapping Issue - Cisco Community

When a phone's battery overheats and expands, it poses a significant safety risk, including the potential for fire or the battery bursting. The first and most critical action is to turn off the device to prevent further chemical reactions within the battery that could exacerbate the situation. Turning off the phone halts its operations, minimizing the heat generation and reducing the risk of further damage or danger. This is a precautionary measure to ensure the user's safety and to prevent any additional harm to the phone itself. It's important for the user to not attempt to charge or use the phone in this condition and to seek professional help or replacement of the battery or device as needed.References: Mobile Devices 1101.docx, Safety and Environmental Concerns section.

The most likely issue that the technician will encounter is A. Corrupt job in print spooler.

A corrupt job in the print spooler is a common problem that can cause a printer to stop printing or print slowly. The print spooler is a service that manages the print queue, which is a list of documents that are waiting to be printed. Sometimes, a document in the print queue can become corrupted or incompatible with the printer, and prevent other documents from being printed. This can happen due to various reasons, such as power outage, network interruption, driver mismatch, virus infection, etc12.

To troubleshoot and resolve this issue, the technician can use the diagnostic tool in the printer’s administrator menu, which is a feature that allows the technician to access and configure various settings and options of the printer. The diagnostic tool can help the technician identify and delete the corrupt job in the print spooler, and restart the print service. The technician can also use the diagnostic tool to check the printer’s status, error messages, firmware updates, network settings, and other information that can help with the troubleshooting process34.

The other options are less likely to be encountered by the technician, as they are not related to the printer’s heavy use or the diagnostic tool. Insufficient space in the printer is an issue that can occur when the printer’s memory or storage is full, and it can cause the printer to print slowly or incompletely. However, this issue can be easily resolved by clearing the printer’s memory or storage, or adding more memory or storage to the printer12. Network connectivity issues are problems that can affect the communication between the printer and the network, and they can cause the printer to be offline or unreachable. However, these issues can be resolved by checking and fixing the physical or wireless connection, the network configuration, the firewall settings, and the printer’s IP address12. Improperly installed drivers are issues that can affect the compatibility and functionality of the printer, and they can cause the printer to print incorrectly or not at all. However, these issues can be resolved by updating, reinstalling, or rolling back the printer’s drivers, or by using the correct drivers for the printer’s model and operating system12.

VGA stands for Video Graphics Array, and it is a type of cable that can be used to transmit analog video signals between devices, such as laptops, monitors, or projectors. VGA cables have 15 pins arranged in three rows, and they are usually color-coded blue. VGA cables can support resolutions up to 2048 x 1536 pixels, but they have low quality and limited color depth compared to modern digital standards such as HDMI or DisplayPort .

A projector is a device that projects an image or a video onto a large surface, such as a wall or a screen. A projector can have different types of input ports, such as VGA, HDMI, DVI, or USB. A projector can also have different types of output technologies, such as LCD, DLP, or LED .

In this scenario, the user needs a technician’s help connecting a laptop to a projector. The projector is old and only has analog input. This means that the projector can only accept analog video signals, and not digital ones. Therefore, the technician should use a VGA cable to connect the laptop to the projector, as it is the most common type of analog video cable. The technician should also make sure that the laptop and the projector have compatible VGA ports, and that the laptop’s display settings are adjusted to match the projector’s resolution and aspect ratio.