220-1101 Practice Test 46 — 15 Questions

Question 1

A user reports that their Android smartphone cannot complete contactless payments at NFC terminals. The user has NFC enabled in settings and has tried multiple payment terminals. Other smartphones work at the same terminals. The phone’s screen and case are in good condition with no visible damage. Which of the following should the technician advise the user to check FIRST?

Accepted Answer

Remove the phone case and try again. The correct first step is to remove the phone case because many cases, especially those with metallic components or thick materials, can interfere with the NFC antenna's ability to communicate with the terminal. NFC operates at 13.56 MHz and relies on near-field inductive coupling; a case can block or detune the magnetic field, preventing payment completion even when NFC is enabled and the phone is otherwise functional.

Answer

Clear the cache for the payment app

Answer

Reinstall the payment application

Answer

Disable and re-enable NFC in system settings

Question 2

A user reports that their Android smartphone displays 'No SIM card - Emergency calls only' even though the SIM is properly inserted. The technician removes the SIM and inserts it into another compatible phone, where it works perfectly. The technician then inserts a known-working SIM from another phone into the original device, which still shows 'No SIM card.' Which of the following is the MOST likely cause?

Accepted Answer

The SIM slot contacts are damaged or dirty. Since the known-working SIM also fails in the original device, the fault is isolated to the device's SIM interface. Damaged or dirty SIM slot contacts can prevent the electrical connection needed for the phone to detect the SIM, even though the SIM itself is functional. This is the most likely cause because the SIM works in another phone and the original phone fails with any SIM.

Answer

The SIM card tray is upside down

Answer

The IMEI number is corrupted in software

Answer

The phone's baseband firmware needs to be updated

Question 3

A user dropped their smartphone onto a tiled floor. The screen now flickers intermittently and there is a visible column of dead pixels on the left side. The touch input continues to work in the unaffected areas. Which of the following components is MOST likely damaged?

Accepted Answer

LCD panel. The LCD panel is responsible for displaying the image on the screen. A visible column of dead pixels and intermittent flickering, while touch input remains functional in unaffected areas, indicates physical damage to the LCD layer itself. The digitizer (touch layer) is separate and still working, which isolates the fault to the LCD panel.

Answer

Digitizer

Answer

Backlight

Answer

Battery

Question 4

A user can access the internet and browse websites normally, but when they try to access a shared network drive by its hostname (\fileserver\share) the connection fails. Other users on the same network can access the drive using the hostname without issue. The technician can successfully ping the fileserver's IP address from the affected computer. Which of the following should the technician check NEXT?

Accepted Answer

The DNS server configuration on the computer. The user can browse the internet and ping the fileserver by IP, indicating basic IP connectivity and DNS resolution for external names are working. However, accessing the share by hostname fails while other users succeed, which isolates the issue to the local NetBIOS or LLMNR name resolution on the affected computer. Checking the DNS client configuration (including the primary DNS suffix and connection-specific suffixes) is the next logical step because the computer may not be appending the correct domain suffix to resolve the single-label hostname 'fileserver' to an IP address.

Answer

The firewall on the fileserver

Answer

The file and printer sharing service on the computer

Answer

The network cable connection

Question 5

A user reports that their Android smartphone's battery drains very quickly after a recent app update. The user has already checked battery usage statistics and found that no app is using an unusually high amount of power. The phone is less than a year old. Which of the following should the technician recommend FIRST?

Accepted Answer

Boot the phone into safe mode and observe battery life.. Safe mode disables all third-party applications, allowing the technician to determine if a recently updated app is causing the battery drain without interference from other user-installed software. Since the battery usage statistics showed no single app consuming excessive power, the issue could be a cumulative effect or a background process that safe mode isolates. This is the least invasive and most targeted first step before considering more drastic measures like a factory reset.

Answer

Perform a factory reset.

Answer

Replace the battery.

Answer

Update the operating system to the latest version.

Question 6

A user reports that their Android smartphone charges very slowly and only when the charging cable is held at a specific angle. The technician inspects the charging port and it appears clean with no visible debris. Which of the following is the BEST first step to resolve this issue?

Accepted Answer

Gently remove any compacted lint from the port using a wooden toothpick or similar non-conductive tool.. The symptom of a smartphone charging only when the cable is held at a specific angle, despite a visually clean port, strongly indicates compacted debris deep inside the port that is not visible during a surface inspection. The best first step is to gently remove any compacted lint using a non-conductive tool like a wooden toothpick, as this is a common, low-risk fix that often resolves the issue without replacing hardware.

Answer

Replace the charging port assembly on the smartphone.

Answer

Use a can of compressed air to blow out the charging port.

Answer

Update the smartphone's operating system to the latest version.

Question 7

A user reports that their Android smartphone no longer charges when connected to a wall charger. The technician tries a different charging cable and power adapter, but the phone still does not charge. The phone's charging port appears clean and free of debris. The technician then attempts to charge the phone using a wireless charging pad, and the phone charges successfully. Which of the following is the most likely cause of the issue?

Accepted Answer

The USB-C connector on the charging port is damaged.. The correct answer is B because the phone charges wirelessly but not via the USB-C port, which isolates the issue to the wired charging circuit. Since different cables and adapters were tried and the port is clean, the most likely cause is physical damage to the USB-C connector, such as bent pins or worn contacts, preventing proper electrical connection. Wireless charging uses a separate coil and circuit, so its functionality confirms the battery and power management system are intact.

Answer

The smartphone's battery has reached end of life.

Answer

The wireless charging coil is malfunctioning.

Answer

The operating system has a power management bug.

Question 8

A user reports that during phone calls, the person on the other end cannot hear them. The user can hear the caller clearly. The user can also record voice memos and videos with sound without any issues. Which of the following components is MOST likely faulty?

Accepted Answer

Noise-cancellation microphone. The noise-cancellation microphone is the most likely faulty component because it is specifically designed to pick up the user's voice while filtering out ambient noise. During phone calls, the primary microphone handles voice transmission, but if the noise-cancellation mic fails, it can cause the system to misinterpret the user's speech as background noise and suppress it, resulting in the caller not hearing the user. The fact that voice memos and videos record correctly indicates the main microphone is functional, isolating the issue to the secondary microphone used for noise cancellation during calls.

Answer

Earpiece speaker

Answer

Loudspeaker

Answer

Charging port

Question 9

A user reports that the network printer in the office is no longer accessible from any workstation after an overnight power outage. The printer has a static IP address of 192.168.1.50. The technician checks the printer and sees it is powered on, the network cable is connected, and the link light on both the printer and the switch port is solid. The technician pings 192.168.1.50 from a workstation, but there is no reply. The technician checks the printer's network settings from its front panel and sees that the IP address is 169.254.10.25. Which of the following is the MOST likely cause of this issue?

Accepted Answer

The printer lost its static IP configuration due to the power outage.. The printer's IP address changed from the static 192.168.1.50 to an Automatic Private IP Addressing (APIPA) address in the 169.254.0.0/16 range. This occurs when a device configured for DHCP fails to obtain a lease from a DHCP server, which can happen after a power outage if the printer's non-volatile RAM (NVRAM) lost its static IP configuration and it reverted to DHCP. Since the printer is now on a different subnet, workstations cannot reach it, explaining the failed ping.

Answer

The printer's network adapter is faulty.

Answer

The switch port is configured with the wrong VLAN.

Answer

The DNS server is not resolving the printer's hostname.

Question 10

A user dropped their smartphone and the touchscreen is now completely unresponsive. The display shows the home screen normally, the device powers on, and physical buttons (power, volume) work. The user has already performed a forced restart (holding power and volume down) but the touchscreen remains unresponsive. The device is not backed up, and the user needs to recover data before sending it for repair. Which of the following is the NEXT best step?

Accepted Answer

Use an external mouse via USB-OTG. Option C is correct because using an external mouse via USB-OTG (On-The-Go) bypasses the broken digitizer by sending touch input through the USB host controller, allowing the user to navigate the phone and initiate data transfer. Since the display and system are functional, this method enables data recovery without repair or data loss.

Answer

Connect the phone to a computer and use file management software to extract data

Answer

Replace the digitizer assembly

Answer

Perform a factory reset from recovery mode

Question 11

A user reports that their Android smartphone displays 'Emergency calls only' at the top of the screen and cannot make or receive regular calls. The device still connects to Wi-Fi and can use messaging apps over Wi-Fi. The technician removes the SIM card, inspects it for damage, and reinserts it. The problem persists. The technician then takes a known-working SIM card from another phone and inserts it into the user's phone; the phone immediately connects to the cellular network. Which of the following is the MOST likely cause?

Accepted Answer

The SIM card is defective or has been deactivated by the carrier.. The technician's swap test with a known-working SIM card immediately restored cellular connectivity, isolating the issue to the original SIM card. Since the phone could still use Wi-Fi and messaging apps, the radio hardware and software stack for cellular were functional, but the SIM card itself was either physically defective or deactivated by the carrier, preventing network registration.

Answer

The phone's cellular antenna is disconnected or damaged.

Answer

The phone is in airplane mode but Wi-Fi is manually re-enabled.

Answer

The mobile network APN settings are incorrectly configured.

Question 12

A user reports that after moving their desktop computer to a new desk, the network connection no longer works. The technician notices that the Ethernet cable is plugged into the computer and the wall jack, but the link lights on the computer's NIC and the wall jack are off. The cable is a flat-style Cat5e cable that came with the computer. Which of the following is the most likely cause?

Accepted Answer

The cable is damaged from bending. Flat-style Ethernet cables are more susceptible to damage from bending or kinking than round cables because their conductors are arranged in a parallel plane, which can cause conductor fractures or impedance mismatches when flexed. Since the cable was moved and the link lights are off on both the NIC and the wall jack, the most likely cause is physical damage to the cable from bending during the move, breaking the electrical continuity.

Answer

The cable is not Cat6

Answer

The wall jack is not terminated properly

Answer

The NIC is disabled in the OS

Question 13

A user has an old iPhone with a cracked screen that is still fully functional and responsive. The user wants to transfer all data, settings, and apps to a brand new iPhone as quickly and easily as possible without using a computer or internet backup. Both iPhones are running the latest iOS version and are placed close together. Which of the following methods should the user choose?

Accepted Answer

Use Apple Quick Start to migrate directly from the old iPhone to the new one. Apple Quick Start uses a direct peer-to-peer Wi-Fi connection (and optionally a wired connection via Lightning-to-USB adapter) to transfer all data, settings, and apps from the old iPhone to the new one without requiring a computer or internet backup. Since both devices are running the latest iOS and are placed close together, this method meets the user's requirement for a fast, computer-free, and internet-free migration.

Answer

Perform an iCloud backup on the old phone and restore from that backup on the new phone

Answer

Connect the old iPhone to a Mac and use Finder to create a backup, then restore that backup on the new iPhone

Answer

Use a third-party app to copy contacts and photos to the new phone

Question 14

A user reports that their Android smartphone's screen remains black during phone calls, even when the phone is held away from the ear. The screen works normally at all other times. The technician has already cleaned the top of the phone where the sensors are located and verified that the screen protector is not obstructing anything. Which of the following components is MOST likely causing the issue?

Accepted Answer

Stuck or faulty proximity sensor. The proximity sensor is designed to detect when the phone is held to the ear and turn off the display to prevent accidental touches. If the sensor is stuck or faulty, it may continuously signal that the phone is against the ear, keeping the screen black even when held away. Cleaning the sensor and checking the screen protector are standard first steps, but if the issue persists, a defective proximity sensor is the most likely cause.

Answer

Failed ambient light sensor

Answer

Corrupted display driver

Answer

Battery saver mode enabled

Question 15

A user reports that their Android smartphone's battery drains very quickly during normal use and the phone feels unusually warm, especially near the back panel. The technician has already tested the charging cable and power adapter with another device and they work correctly. Which of the following components is MOST likely faulty?

Accepted Answer

Battery. The battery is the most likely faulty component because rapid drainage and excessive heat generation, particularly near the back panel where the battery is typically located, are classic symptoms of a degraded or internally shorted lithium-ion battery. A failing battery can have increased internal resistance, causing it to discharge quickly and convert electrical energy into heat rather than storing it properly.

Answer

Charging port/board

Answer

Screen

Answer

CPU/SoC