IT Essentials Chapter 9 Exam Online

Laptop CPUs are designed to use less power and generate less heat than desktop CPUs.

To reduce heat and power consumption, CPU throttling can be used. CPU throttling reduces the CPU speed.

Small Outline Dual In-line Memory Modules, or SODIMMs, are designed for the space restrictions of laptops.

Laptop motherboards are proprietary and vary based on the manufacturer. Laptop motherboards and desktop motherboards are designed differently and are not compatible. Components that are used on a desktop motherboard generally cannot be used on a laptop motherboard.

The inverter will convert DC power to AC power. AC power is required by the backlight in a laptop and must be provided by an inverter. The power supply converts high voltage AC to low voltage DC, and fluorescent tubes convert electrical energy to light.

The Wi-FI antenna is typically located above the laptop screen. It is connected to a wireless card internal to the laptop via an antenna wire and leads.

Windows UAC settings are used for elevation of user privileges, Windows AERO theme allows for advanced graphic functions, and power dial is a power setting preset by the manufacturer. You can configure laptop ACPI power options using the Windows Power Options located in the control panel. You also have to ensure that the ACPI power settings are enabled in the BIOS.

Bluetooth technology is wireless and a Bluetooth device can be used to connect up to seven other devices over a short distance.

Wireless connections are configured within the Network and Sharing Center. A technician would have to configure the laptop to connect to the SSID of the wireless network that is to be joined, along with any security parameters which apply to that network.

Mobile hotspots allow a laptop to connect to a cellular network and gain WAN access. Bluetooth and infrared wireless work for short distances. 802.11 Wi-Fi technology provides laptops with access to a local network.​

SODIMM modules in a laptop are held in place by locking clips on either side. The correct process for removal of the module is to apply even pressure on the sides of both of the clips in an outward direction, so that they unlock and release the SODIMM module.

The POST screen, BIOS, and System Properties window will display how much RAM is currently installed, but will not display the maximum amount of RAM possible within a laptop. The manufacturer website must be consulted to determine the maximum amount of RAM possible.

After a CPU is latched and secured to a laptop motherboard, thermal paste should be applied. The thermal paste should reside between the CPU and the heat sink of a laptop. This will mitigate CPU overheating and allow the CPU to operate at lower temperatures.

Near field communication, or NFC, is commonly used to establish radio communication between two devices by placing them next to each other or by touching them together.

E-readers are optimized for reading electronic documents and are commonly lighter, have longer battery life, and are more readable in direct sunlight than tablets.

Fitness monitors are used for tracking daily activity and body metrics for collecting and analyzing health metrics.

Routine preventive maintenance includes the cleaning of parts that can get dirty with everyday use. Internal components are not required to be cleaned as often as external parts. Nonabrasive cleaners should be used to ensure that no damage is caused to laptop components.

To clean a laptop computer, mild substances and lint-free cloths are required. Cleaners should be nonabrasive. Otherwise they can damage the laptop components.

To avoid electrical hazards or accidents, it is essential to remove any power source before cleaning any component.

Once a solution has been implemented, the technician should verify the solution and apply any preventive measures if applicable. On completion, the technician should then proceed with thorough documentation prior to returning the system to the customer.

In troubleshooting, once the exact problem is identified, the next step is to determine the exact cause, in order to develop an action plan to correct the problem.

A bad power inverter would cause an LCD panel to darken whereas a failing memory module would cause random system crashes or freezes. Power Management Features would affect the power options of the laptop, but a burnt-in screen would cause a ghosted image to reside on the panel itself. An incorrectly set LCD can result in images that appear pixelated or stretched on the laptop.

A swollen battery should be replaced with a new one from the smartphone manufacturer.