A+ 220-1201 Exam Dumps

System overheating is the most likely cause of repeated shutdowns when the battery still has sufficient charge. Modern laptops monitor CPU, GPU, and internal system temperatures. If temperatures exceed safe limits, the system may first reduce processor performance through thermal throttling and then shut down automatically to prevent permanent component damage. Common causes include blocked ventilation openings, accumulated dust, a failed cooling fan, dried thermal compound, or using the laptop on a surface that obstructs airflow. Malware, corrupted RAM, and outdated drivers can cause instability, crashes, or performance problems, but they are less directly associated with protective power shutdowns. The technician should inspect airflow, verify fan operation, check internal temperatures, and clean the cooling system before replacing other hardware. Repeated shutdowns during demanding workloads provide especially strong evidence of a thermal problem.

A PoE (Power over Ethernet) switch transmits both data and electrical power over Ethernet cables to devices like wireless access points or VoIP phones. This is especially useful in areas where separate power sources are not available.

Bluetooth is a wireless technology designed for short-range communication between devices. It is a classic example of a Personal Area Network (PAN), which supports communication between devices like smartphones, headsets, keyboards, and mice within a few meters. PANs are smaller in scope compared to LANs or WANs.

The technician should replace the printhead. A thermal receipt printer creates an image by selectively heating points on specially coated paper. If every heating element remains active or the printhead’s control circuitry fails, the entire paper surface can be exposed to heat and become black. Cleaning the heating element is appropriate when dirt or residue causes vertical white lines, missing sections, or uneven output, but it is unlikely to correct a completely black page caused by an electrical printhead failure. Recalibrating a ribbon does not apply to a direct thermal receipt printer because it does not use an ink ribbon. Maintenance kits are primarily associated with laser printers and commonly contain components such as rollers and a fuser. A defective thermal printhead is therefore the option that best explains completely black output and should be replaced.