Exactprep 220-1101 Questions

The most likely cause of the issue is a defective inverter. An inverter is a device that converts the direct current (DC) power from the laptop battery or adapter to the alternating current (AC) power that the LCD backlight bulb needs. The backlight bulb is a fluorescent lamp that illuminates the LCD screen and makes the image visible. If the inverter is defective, it may not provide enough power to the backlight bulb, or it may stop working intermittently. This can result in a dim, dark, or blank screen, even though the LCD panel is still functioning and displaying a faint image.

To troubleshoot a defective inverter, the technician can follow these steps:

Connect an external monitor to the laptop and check if the image is displayed normally. If the external monitor works fine, it means that the laptop video card and driver are not the cause of the issue.

Shine a flashlight into the LCD screen and look for a faint image. If the image is visible, it means that the LCD panel is not the cause of the issue.

Check the inverter cable and connector for any damage, loose connection, or corrosion. The inverter cable is a thin wire that runs from the laptop motherboard to the inverter board, which is usually located at the bottom of the LCD screen. The inverter connector is a small plug that connects the inverter cable to the inverter board. The technician can try to reseat the inverter cable and connector, or replace them if they are faulty.

Check the inverter board for any damage, burn marks, or blown fuses. The inverter board is a small circuit board that contains the inverter and other components. The technician can try to test the inverter board with a multimeter, or replace it if it is defective.

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The correct answer is C. OLED.

OLED stands for Organic Light-Emitting Diode, and it is a type of display technology that uses organic compounds to create light and color. Unlike LCD (Liquid Crystal Display) or Plasma displays, OLED does not require a backlight or a filter to produce images. This means that OLED can offer higher contrast, wider color gamut, and better viewing angles than other display types.

LCD displays use liquid crystals that are sandwiched between two polarizing filters and illuminated by a backlight. The liquid crystals can change their orientation and block or allow light to pass through the filters. LCD displays can have different panel types, such as IPS (In-Plane Switching), VA (Vertical Alignment), or TN (Twisted Nematic), which affect the color accuracy, response time, and viewing angles of the display.

Plasma displays use gas-filled cells that are electrically charged to create plasma, which emits ultraviolet light. The ultraviolet light then excites phosphors that emit visible light and color. Plasma displays can produce deep blacks and high contrast, but they are also prone to image retention, screen burn-in, and high power consumption.

VGA stands for Video Graphics Array, and it is not a display type but a video interface standard that was introduced in 1987. VGA can transmit analog signals from a computer to a monitor, but it has low resolution and limited color depth compared to modern digital standards such as HDMI or DisplayPort.

Therefore, OLED is the best display type for graphic designers who want the most accurate color spectrum and the widest viewing angles. OLED displays can also be thinner and lighter than LCD or Plasma displays, which makes them ideal for laptops. However, OLED displays are also more expensive and less durable than other display types, and they may suffer from image retention or burn-in over time.

The most likely issue is C. Tray settings.

Tray settings are the configuration options that tell the printer what size and type of paper is loaded in each tray. If the tray settings do not match the actual paper size and type, the printer may not be able to feed the paper correctly and cause paper jams.

In this scenario, the team that is having issues prints legal-sized documents, which are 8.5 x 14 inches, while the other teams print letter-sized documents, which are 8.5 x 11 inches. If the printer’s tray settings are set to letter size by default, the printer may not recognize the legal-sized paper and try to pull it as if it were letter-sized paper. This can result in paper jams or misaligned printing.

To fix this issue, the team should check and adjust the tray settings on the printer to match the paper size and type they are using. They can also use a separate tray for legal-sized paper and another tray for letter-sized paper, and make sure to select the correct tray when printing.

The other options are less likely to cause the issue, because:

•Worn rollers are the rubber parts that grip and move the paper through the printer. They can wear out over time and lose their traction, causing paper jams or misfeeds. However, worn rollers would affect all teams and all paper sizes, not just one team and one paper size.

•Page orientation is the direction of the paper, either portrait or landscape. It can affect how the document is printed on the paper, but not how the paper is fed into the printer. Page orientation can be changed in the print settings or in the document itself, but it would not cause paper jams unless the paper size is also incorrect.

•Multipage misfeed is when more than one sheet of paper is pulled into the printer at once, causing a jam. This can happen if the paper is too thin, too thick, or too slippery, or if there is too much or too little paper in the tray. However, multipage misfeed would also affect all teams and all paper sizes, not just one team and one paper size.

For more information and tips on how to prevent and fix paper jams, you can visit these links:

•Fix Paper Jam Errors | HP® Support

•Common Causes of Paper Jams and How to Fix Them - 1ink.com

High availability is a design principle that ensures a system or service can operate continuously without significant downtime or disruption. High availability can be achieved by implementing redundancy, failover, load balancing, and backup strategies. High availability can prevent a single point of failure within the system, which means that if one component fails, another one can take over its function. Rapid elasticity is the ability to scale up or down the resources of a system according to the demand, but it does not prevent a single point of failure. RAID is a method of storing data across multiple disks to provide redundancy and performance, but it does not prevent a single point of failure at the server level. Shared resources are the resources that are pooled and accessed by multiple users or systems, but they do not prevent a single point of failure either. References: