220-1101 Practice Exam 2 — 20 Questions

Question 1

A user brings in a smartphone with a cracked screen that is still responsive to touch. The device is an older model, and the user wants the screen replaced rather than buying a new phone. After powering off the device and removing the SIM and SD cards, what is the next step in the screen replacement process?

Accepted Answer

Apply heat to the edges of the screen to soften the adhesive.. The correct first step after powering off and removing removable components is to carefully heat the edges of the screen to soften the adhesive that holds it in place. This prevents cracking the glass further or damaging the frame. Attempting to pry the screen off cold can cause additional damage.

Answer

Use a spudger to pry the screen off starting from the bottom.

Answer

Remove the battery using a plastic pry tool.

Answer

Insert a guitar pick under the screen to separate it from the frame.

Question 2

A customer complains that their laptop battery no longer holds a charge and the laptop only works when plugged in. The technician confirms the battery is removable. What is the most appropriate first step in servicing this issue?

Accepted Answer

Power off the laptop and remove the battery.. The correct first step is to power off the laptop and remove the battery. This ensures safety and prevents electrical shorts or damage during replacement. After removal, the technician can install a new battery.

Answer

Update the battery driver in Device Manager.

Answer

Run a battery calibration utility from the manufacturer.

Answer

Replace the AC adapter to see if the charging circuit is faulty.

Question 3

A technician is replacing a cracked screen on a tablet. After removing the digitizer and LCD assembly, they notice the home button flex cable is torn. The tablet still has a physical home button. What should the technician do to ensure the repair is complete and the home button functions?

Accepted Answer

Replace the home button flex cable with a new one.. The torn flex cable must be replaced because it is essential for the home button to communicate with the motherboard. Simply reconnecting a torn cable will not restore function. The technician should order a replacement home button flex cable and install it.

Answer

Solder the torn ends of the flex cable together.

Answer

Use electrical tape to hold the torn cable together.

Answer

Ignore the tear and reassemble the tablet.

Question 4

During a laptop keyboard replacement, a technician accidentally dislodges a small ribbon cable from the touchpad connector. The touchpad is now unresponsive. The technician has never worked on this model before. What is the best course of action to resolve the issue?

Accepted Answer

Consult the service manual to identify the correct connector and reseat the cable.. The technician should consult the device's service manual to locate the correct connector and properly reseat the ribbon cable. This ensures the cable is aligned and locked in place, restoring touchpad functionality. Guessing or forcing the cable can damage the connector.

Answer

Use tweezers to gently push the ribbon cable into any nearby empty connector.

Answer

Reboot the laptop to see if the touchpad driver reloads.

Answer

Replace the entire keyboard assembly since the touchpad cable is likely broken.

Question 5

A user reports that their smartphone's charging port is loose and the cable falls out easily, making it difficult to charge. The technician inspects the port and sees no visible debris. What is the most likely cause and the appropriate repair?

Accepted Answer

The charging port has worn-out pins; replace the charging port assembly.. A loose charging port is typically caused by worn or bent internal pins from repeated plugging and unplugging. The correct repair is to replace the charging port assembly, as the pins cannot be individually repaired. Cleaning would not help if the pins are physically damaged.

Answer

The charging cable is defective; replace the cable.

Answer

Use compressed air to blow out the port.

Answer

Apply a small amount of super glue to the port to tighten it.

Question 6

A technician is tasked with upgrading the RAM in an all-in-one (AIO) desktop. The AIO has a sealed back cover with several screws. After removing the screws, the cover still does not come off. What should the technician do next?

Accepted Answer

Use a plastic spudger to gently pry the cover along the seam to release clips.. Many AIO designs use plastic clips in addition to screws to secure the back cover. The technician should carefully pry along the seam with a plastic spudger to release the clips without damaging the casing. Forcing the cover can crack the plastic.

Answer

Use a flathead screwdriver to pry the cover off forcefully.

Answer

Check if there are hidden screws under rubber feet or stickers.

Answer

Apply heat to the back cover to soften any adhesive.

Question 7

A customer reports that after a recent fall, their smartphone's screen is completely black, but the device still vibrates when calls come in. The technician suspects the display cable is loose. What is the correct sequence of steps to access and reseat the display cable?

Accepted Answer

Remove the back cover, disconnect the battery, then reseat the display cable.. To access the display cable, the technician must first remove the back cover, then the battery (if not integrated), and disconnect the display cable from the motherboard. This sequence ensures safe access without risking a short circuit from a live battery. The display cable is typically a thin ribbon cable near the motherboard.

Answer

Remove the battery first, then the back cover, and reseat the display cable.

Answer

Reseat the display cable by inserting a spudger through the charging port.

Answer

Perform a factory reset to rule out software issues.

Question 8

A technician is replacing the battery in a slim laptop where the battery is glued inside the chassis. After removing the bottom cover, the technician sees the battery is firmly attached with adhesive. What is the safest method to remove the battery without damaging the laptop?

Accepted Answer

Apply isopropyl alcohol around the battery edges to weaken the adhesive, then gently pry with a plastic spudger.. The safest method is to apply isopropyl alcohol along the edges of the battery to dissolve the adhesive, then gently pry with a plastic spudger. This minimizes the risk of puncturing the battery, which could cause a fire or chemical leak. Using metal tools or excessive force is dangerous.

Answer

Use a flathead screwdriver to pry the battery out forcefully.

Answer

Heat the battery with a heat gun to soften the adhesive.

Answer

Use a suction cup to pull the battery straight up.

Question 9

A technician is servicing a tablet that will not power on. The technician has confirmed the battery is charged by testing it with a multimeter (voltage within spec). The power button feels normal when pressed. What is the most likely hardware component that has failed, and how should it be addressed?

Accepted Answer

Reseat or replace the power button flex cable.. If the battery is charged and the power button is functional, the most likely cause is a faulty power button flex cable or a loose connection. The technician should open the tablet, locate the power button flex cable, and reseat or replace it. This cable can wear out or become disconnected over time.

Answer

Replace the LCD screen assembly.

Answer

Replace the motherboard.

Answer

Perform a hard reset by holding the power and volume buttons for 30 seconds.

Question 10

A technician is replacing the display assembly on a laptop. After installing the new display, the laptop powers on but the screen remains black. The technician has verified the display cable is fully seated at both ends. What should the technician check next to diagnose the issue?

Accepted Answer

Check the backlight voltage or inverter board (if applicable).. The technician should check the inverter or backlight circuit if the laptop uses a CCFL backlight, or the LED backlight voltage on newer models. A black screen with power on often indicates a backlight failure, not a complete display failure. The technician can shine a bright light at the screen to see if there is a faint image, confirming the backlight is the issue.

Answer

Replace the LCD panel again, assuming the new one is defective.

Answer

Update the graphics driver from the Windows Recovery Environment.

Answer

Reseat the RAM modules to ensure proper boot.

Question 11

A user reports that their new Bluetooth headset pairs with their smartphone but no audio is heard during calls. The headset works fine with another phone. What is the most likely cause?

Accepted Answer

The phone is not using the correct Bluetooth profile for calls.. Bluetooth audio requires correct profile support; the most common issue is the phone using the wrong audio profile (e.g., HSP for calls vs. A2DP for media). The headset may be connected but not set as the active audio device for calls.

Answer

The headset battery is low.

Answer

The headset is out of Bluetooth range.

Answer

The phone's Bluetooth radio is faulty.

Question 12

A company deploys tablets for field workers to capture signatures on glass screens using a capacitive stylus. Several workers complain that the stylus does not register consistently. What is the most likely cause?

Accepted Answer

The stylus tip is not conductive.. Capacitive touchscreens require a conductive stylus; standard plastic or non-conductive styli will not work. The correct solution is to use a stylus with a conductive tip designed for capacitive screens.

Answer

The screen protector is too thick.

Answer

The tablet's touch calibration is off.

Answer

The workers are pressing too lightly.

Question 13

A user wants to connect their laptop to a 4K external monitor using a USB-C port that supports DisplayPort Alt Mode. The monitor has only HDMI input. Which adapter or cable is required?

Accepted Answer

USB-C to HDMI adapter. USB-C with DisplayPort Alt Mode outputs a DisplayPort signal; to connect to an HDMI monitor, a USB-C to HDMI adapter or cable is needed. A simple USB-C to USB-A adapter will not carry video.

Answer

USB-C to USB-A adapter

Answer

USB-C to DisplayPort cable

Answer

USB-C to VGA adapter

Question 14

A user's Android phone will not charge when plugged into a car's USB port, but charges fine with a wall adapter. The car's USB port powers other devices. What is the most likely issue?

Accepted Answer

The car USB port does not supply enough current.. Car USB ports often provide limited current (0.5A), which may be insufficient for fast charging or even maintaining charge on modern phones. The phone's charging circuit may require more current than the port supplies, so it does not charge.

Answer

The car's USB port is faulty.

Answer

The phone's USB port is damaged.

Answer

The USB cable is incompatible.

Question 15

A technician is configuring a conference room where a laptop must wirelessly display its screen to a 4K projector without using any cables. The projector supports Miracast. What must the technician verify on the laptop?

Accepted Answer

The laptop supports Miracast and Wi-Fi is enabled.. Miracast uses Wi-Fi Direct to mirror the screen; the laptop must support Miracast (common in Windows 8.1 and later) and have Wi-Fi enabled. It does not require an internet connection or Bluetooth.

Answer

The laptop has Bluetooth enabled.

Answer

The laptop is connected to the same Wi-Fi network as the projector.

Answer

The laptop has an HDMI port.

Question 16

A user reports that their iPhone will not connect to a Bluetooth speaker that is in pairing mode. The speaker is listed in the iPhone's Bluetooth settings but tapping it does nothing. What should the technician try first?

Accepted Answer

Forget the speaker in Bluetooth settings and re-pair.. If a device is listed but won't connect, it may be a cached pairing record. Forgetting the device and re-pairing clears the old profile and allows a fresh connection. This is a standard troubleshooting step for Bluetooth issues.

Answer

Restart the iPhone.

Answer

Reset the network settings on the iPhone.

Answer

Update the speaker's firmware.

Question 17

A technician is setting up a mobile point-of-sale (POS) system using a tablet and a Bluetooth receipt printer. The printer pairs but prints garbled text. The tablet is running a custom POS app. What is the most likely cause?

Accepted Answer

The tablet is using the wrong Bluetooth profile or driver for the printer.. Bluetooth printers require the correct driver or profile (e.g., SPP or HCRP) to interpret data. Garbled text indicates the tablet is sending data in an unsupported format or the wrong driver is loaded. Installing the proper printer driver usually resolves this.

Answer

The printer is out of paper.

Answer

The Bluetooth signal is weak.

Answer

The printer's battery is low.

Question 18

A user's laptop has a USB-C port that supports Thunderbolt 3. They want to connect two 4K monitors daisy-chained. The monitors have DisplayPort inputs. Which cable configuration is required?

Accepted Answer

Use a USB-C to DisplayPort cable from the laptop to the first monitor, then a DisplayPort cable from the first monitor to the second.. Thunderbolt 3 supports daisy-chaining via DisplayPort over USB-C. Each monitor must have a DisplayPort input and support MST (Multi-Stream Transport). The first monitor connects to the laptop via USB-C to DisplayPort cable, and the second connects to the first monitor's DisplayPort out.

Answer

Connect both monitors directly to the laptop using two separate USB-C to HDMI cables.

Answer

Use a USB-C hub with two HDMI ports.

Answer

Use a single USB-C to DisplayPort cable that splits into two DisplayPort connectors.

Question 19

A technician is troubleshooting a smartwatch that will not sync with a smartphone via Bluetooth. The smartwatch pairs but data syncs only intermittently. The smartphone is an Android device with battery optimization enabled for the companion app. What is the most likely cause?

Accepted Answer

The smartphone's battery optimization is preventing the companion app from running in the background.. Battery optimization on Android can kill background processes for apps, preventing the companion app from maintaining a constant Bluetooth connection for syncing. Disabling battery optimization for the app allows it to run continuously, resolving intermittent sync issues.

Answer

The smartwatch firmware is outdated.

Answer

The Bluetooth radio is experiencing interference from other devices.

Answer

The smartwatch's battery is low.

Question 20

A user reports that their NFC-enabled smartphone cannot make contactless payments at a terminal that works with other phones. The user has a thick wallet case with metal credit cards. What is the most likely issue?

Accepted Answer

The wallet case is interfering with the NFC signal.. NFC uses electromagnetic fields; metal objects can block or detune the NFC antenna. A thick case with metal cards can shield the phone's NFC antenna, preventing communication with the payment terminal. Removing the case or isolating the phone from metal usually resolves this.

Answer

The payment terminal's NFC reader is faulty.

Answer

The phone's NFC antenna is damaged.

Answer

The phone's payment app is not configured correctly.