220-1201 Practice Test 39 — 15 Questions

Question 1

A user reports that their iPad will not rotate the screen when the device is turned sideways, even though rotation lock is off. The issue started after a recent iOS update. What is the most likely cause?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

The rotation lock is enabled in the Control Center.. The most common cause of screen rotation failure after an iOS update is that the update resets or changes Control Center settings, re-enabling the rotation lock. The user may have rotation lock off in Settings but it can be toggled on in Control Center without their knowledge, as iOS updates can alter Control Center configurations. The accelerometer and display driver are unlikely to be affected by a standard iOS update, and the issue is system-wide, not app-specific.

Answer

The accelerometer sensor is damaged.

Answer

The app being used does not support landscape mode.

Answer

The iOS update corrupted the display driver.

Question 2

A technician is configuring a network for a branch office that will use a router to connect to the main office over the internet. The connection must be encrypted and authenticated to ensure data privacy. Which protocol should the technician configure on the router?

Accepted Answer

IPsec. IPsec is the correct protocol because it provides both encryption and authentication at the network layer, making it ideal for securing site-to-site VPN connections over the internet. It ensures data privacy by encrypting the entire IP packet and authenticates the communicating peers using protocols like IKE (Internet Key Exchange). This matches the requirement for a router-to-router connection where all traffic between branch and main office must be protected.

Answer

SSL/TLS

Answer

PPTP

Answer

L2TP

Question 3

A technician is troubleshooting a smartphone that can send and receive text messages but cannot make or receive phone calls. The device shows full signal bars. Which network setting is most likely misconfigured?

Accepted Answer

The device's preferred network type is set to 'LTE only' and VoLTE is disabled.. When a smartphone shows full signal bars but cannot make or receive voice calls while SMS works, the most likely cause is that the device is set to 'LTE only' as its preferred network type and VoLTE (Voice over LTE) is disabled. SMS can be carried over LTE via IMS (IP Multimedia Subsystem) or fallback to circuit-switched networks, but voice calls require either VoLTE or a circuit-switched fallback (CSFB) to 2G/3G. With 'LTE only' selected and VoLTE off, the device cannot initiate or accept voice calls because it lacks a circuit-switched connection and has no fallback path.

Answer

The device's data roaming is turned off.

Answer

The device's Bluetooth is enabled.

Answer

The device's airplane mode is turned on.

Question 4

A user reports that their Android tablet's screen flickers when using a specific video streaming app, but the screen is stable in other apps and on the home screen. What hardware component is most likely at fault?

Accepted Answer

The video streaming app has a software bug or codec issue.. The screen flickers only within a specific video streaming app, while the home screen and other apps remain stable. This strongly indicates the issue is isolated to software, specifically a bug or codec incompatibility within that app, rather than a hardware failure affecting the entire display or GPU.

Answer

The tablet's display panel is failing.

Answer

The GPU (Graphics Processing Unit) is overheating.

Answer

The tablet's battery is swollen and pressing on the display.

Question 5

A technician is setting up a new Android tablet for a warehouse worker who uses a barcode scanner app that requires constant Wi-Fi. The warehouse has multiple access points with the same SSID. The tablet frequently disconnects and reconnects as the worker moves around. What should the technician configure to improve connectivity?

Accepted Answer

Enable the 'Wi-Fi roaming' or 'aggressive handover' setting in the tablet's advanced Wi-Fi options.. Enabling 'Wi-Fi roaming' or 'aggressive handover' configures the tablet to actively scan for stronger access points and initiate a faster re-association when signal strength degrades. This setting reduces the disconnection/reconnection cycles common in multi-AP environments with the same SSID by triggering a proactive handoff before the current link is lost.

Answer

Set the tablet to use a static IP address.

Answer

Disable the tablet's Bluetooth radio.

Answer

Configure the tablet to prefer the 2.4 GHz band over 5 GHz.

Question 6

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 (Doze mode) restricts background app activity to conserve power. When the companion app is prevented from running in the background, it cannot maintain the persistent Bluetooth connection needed for continuous data sync, even though the initial pairing succeeds. This explains intermittent sync because the app is periodically killed or throttled by the OS.

Answer

The smartwatch firmware is outdated.

Answer

The Bluetooth radio is experiencing interference from other devices.

Answer

The smartwatch's battery is low.

Question 7

A user complains that their tablet's battery drains very quickly, even when not in use. The device is one year old and was working normally until last week. Which hardware component is most likely failing?

Accepted Answer

The battery has degraded or is failing.. A battery that drains quickly even when the device is idle typically indicates that the battery's internal chemistry has degraded, leading to increased self-discharge and reduced capacity. After one year of use, lithium-ion batteries naturally lose about 20% of their capacity, and a sudden failure can occur due to a defective cell or internal short. This matches the symptom of normal operation followed by rapid drain, as the battery can no longer hold a charge effectively.

Answer

The charging port is loose.

Answer

The power management IC is faulty.

Answer

The screen brightness is set too high.

Question 8

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. The laptop's USB-C port supports DisplayPort Alt Mode, which can carry a DisplayPort signal over the USB-C connector. Since the monitor only has HDMI input, a USB-C to HDMI adapter converts the DisplayPort signal from Alt Mode into an HDMI-compatible signal, enabling the 4K video output.

Answer

USB-C to USB-A adapter

Answer

USB-C to DisplayPort cable

Answer

USB-C to VGA adapter

Question 9

A customer wants to use their tablet as a secondary display for their laptop while traveling. They need a solution that does not require a Wi-Fi network. Which accessory should you recommend?

Accepted Answer

A USB-C to HDMI adapter.. A USB-C to HDMI adapter allows you to connect the tablet directly to the laptop via a wired video connection, enabling it to function as a secondary display without relying on any Wi-Fi network. This solution uses the DisplayPort Alt Mode over USB-C, which is a standard feature on many modern tablets and laptops, providing a stable, low-latency video signal.

Answer

A Bluetooth keyboard and mouse set.

Answer

A wireless display adapter like Miracast.

Answer

A portable battery pack.

Question 10

A user reports that their Android phone's battery drains quickly after installing a new social media app. The phone worked fine before. What is the most efficient first troubleshooting step?

Accepted Answer

Check the app's permissions and disable background activity.. The most efficient first step is to check the app's permissions and disable background activity because the new social media app is likely consuming battery by running background services (e.g., location polling, push sync, or wake locks). This approach isolates the problem without removing the app, allowing you to confirm the cause before taking further action. It aligns with the CompTIA A+ troubleshooting methodology of identifying the most probable cause first.

Answer

Uninstall the social media app immediately.

Answer

Perform a factory reset of the device.

Answer

Update the phone's operating system.

Question 11

A user reports that their Android tablet frequently crashes when using a specific note-taking app, but other apps work fine. They have already cleared the app cache and data. What should you do next to resolve the issue?

Accepted Answer

Uninstall and reinstall the note-taking app.. Since the issue is isolated to a single app and persists after clearing cache and data, the next logical step is to uninstall and reinstall the app. This replaces the app's APK and all its associated files, eliminating any corrupted installation or misconfigured permissions that clearing data did not fix. A factory reset or hardware replacement is premature when the problem is application-specific.

Answer

Perform a factory reset on the tablet.

Answer

Disable the tablet's antivirus software.

Answer

Replace the tablet's battery.

Question 12

A technician is deploying a fleet of tablets that must connect to a corporate network using 802.1X authentication with certificates. After configuring the Wi-Fi profile, some tablets fail to connect. The technician verifies the SSID and security settings are correct. What is the most likely missing configuration?

Accepted Answer

The tablets are missing the root CA certificate in their trusted store.. 802.1X authentication using EAP-TLS requires the client to validate the server's certificate against a trusted root CA. If the root CA certificate is missing from the tablet's trusted store, the client cannot verify the RADIUS server's identity, causing the EAP-TLS handshake to fail. This is the most likely issue since the SSID and security settings are already confirmed correct.

Answer

The tablets have the wrong date and time set.

Answer

The tablets are using WPA2-Personal instead of WPA2-Enterprise.

Answer

The tablets have a static IP configured that conflicts with the DHCP scope.

Question 13

A user is traveling internationally and complains that their smartphone's cellular data stopped working after landing. They have an international roaming plan activated. What should the technician check first to restore data connectivity?

Accepted Answer

Ensure that the device's data roaming setting is enabled.. When traveling internationally, cellular data requires the device's data roaming setting to be enabled to connect to foreign networks. Even with an active international roaming plan, the smartphone will not automatically use data on a visited network unless this setting is turned on. This is a standard requirement across GSM and LTE networks, as data roaming is disabled by default to prevent unexpected charges.

Answer

Verify that the SIM card is not locked to the home carrier.

Answer

Check if the device's date and time are set correctly.

Answer

Reset the device's network settings to default.

Question 14

A small office reports that internal users can access the internet but cannot resolve domain names to IP addresses. The DNS server is configured correctly. Which port should be checked on the firewall?

Accepted Answer

Port 53. Port 53 is the standard port for DNS traffic, used for both TCP and UDP. Since internal users can access the internet but cannot resolve domain names, the firewall is likely blocking outbound DNS queries on port 53, preventing the client from reaching the DNS server even though the server itself is configured correctly.

Answer

Port 80

Answer

Port 443

Answer

Port 67

Question 15

A user wants to securely transfer files to a remote server using a command-line tool. Which port is the default for SFTP (SSH File Transfer Protocol)?

Accepted Answer

22. SFTP (SSH File Transfer Protocol) operates over the SSH protocol, which uses TCP port 22 by default. Unlike FTP or FTPS, SFTP does not use separate control and data channels; it encapsulates all file operations within a single encrypted SSH session. This makes port 22 the correct default for SFTP transfers.

Answer

21

Answer

20

Answer

990