220-1101 Practice Test 31 — 15 Questions

Question 1

A user reports that their iPhone 13 frequently shuts down unexpectedly when the battery indicator shows between 15% and 20% charge. The phone displays the low battery warning and then powers off. The user has already force-restarted the device and checked for iOS updates. The battery health reading in Settings shows 79% maximum capacity. Which of the following is the MOST likely cause of this issue?

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

Accepted Answer

The battery has degraded and can no longer hold sufficient voltage under load. The iPhone 13's battery health reading of 79% maximum capacity indicates significant chemical aging. When a lithium-ion battery degrades past 80%, its internal resistance increases, causing voltage to sag under load. At low charge levels (15-20%), the voltage drop can trigger the device's safety cutoff, causing an unexpected shutdown even though the software still reports remaining charge.

Answer

A faulty charging port or cable

Answer

The battery requires calibration by fully draining and recharging

Answer

A defective logic board or power management IC

Question 2

A user reports that their desktop computer loses network connectivity for a few seconds whenever they start a large video rendering application. The technician has already updated the network adapter driver, replaced the Ethernet cable, and verified that the switch port is not faulty. The computer uses an integrated NIC on the motherboard. The system's CPU and GPU temperatures are within normal limits during rendering. Which of the following is the MOST likely cause of the intermittent network drops?

Accepted Answer

The power supply unit (PSU) is failing under load.. When a large rendering application starts, it draws significant power from the PSU. If the PSU is failing or underrated, the voltage supplied to the integrated NIC may drop below its operational threshold, causing the NIC to momentarily reset or lose link. This explains the intermittent drops despite the NIC, cable, and switch port being verified as functional.

Answer

The rendering application is saturating the network bandwidth.

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The motherboard's chipset is overheating.

Answer

There is an IRQ conflict between the NIC and the graphics card.

Question 3

A technician replaces a smartphone's fused screen assembly (LCD + digitizer + glass). After reassembly, the phone powers on and the display shows correctly, but the touchscreen is completely unresponsive. Which of the following is the most likely cause?

Accepted Answer

The digitizer cable is not connected. The fused screen assembly includes the LCD, digitizer, and glass. The digitizer is responsible for touch input, and it connects to the motherboard via a separate ribbon cable. If the display works but the touchscreen is unresponsive, the digitizer cable is likely not connected or is loose, as the LCD cable only handles video output.

Answer

The LCD cable is loose

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The battery is not fully seated

Answer

The new screen assembly is incompatible with the phone's OS

Question 4

A technician is troubleshooting a desktop computer that fails to boot and displays the error message 'Boot device not found'. The technician has verified that the hard drive is detected in the BIOS and that the boot order is set correctly. The hard drive is spinning and appears to be receiving power. Which of the following is the MOST likely cause of this issue?

Accepted Answer

A. Corrupted MBR/GPT. Since the hard drive is detected in BIOS, spinning, and receiving power, the issue is not a hardware connection or power failure. The 'Boot device not found' error with correct boot order indicates that the bootloader (MBR or GPT) is corrupted or missing, preventing the system from reading the boot sector to load the operating system.

Answer

B. Bad SATA cable

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C. Failing power supply

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D. Loose RAM module

Question 5

A user reports that their smartphone, which uses a Lightning connector, will not charge at all. The phone powered off overnight and will not turn back on. The user has tried three different known-good charging cables and two known-good wall adapters, none of which work. The technician inspects the phone's charging port and notices it appears clean and undamaged. Which of the following is the MOST likely cause of the issue?

Accepted Answer

The Lightning port has internal pin damage that is not visible. The Lightning connector uses internal pins that can be damaged or bent without visible external signs. Since the user has verified that the cables and wall adapters are known-good, the issue is isolated to the phone's charging port. Internal pin damage would prevent electrical contact even though the port appears clean, making this the most likely cause.

Answer

The battery is completely depleted and needs to be replaced

Answer

The charging IC (Integrated Circuit) on the motherboard has failed

Answer

The phone's operating system has corrupted and needs to be restored

Question 6

A company wants to migrate its on-premises email system to the cloud. The IT team wants to avoid managing the underlying server hardware and email software, but they require the ability to configure custom email policies, create user accounts, and manage distribution groups. Which cloud service model best meets these requirements?

Accepted Answer

Software as a Service (SaaS). Software as a Service (SaaS) delivers a fully managed email application (e.g., Microsoft 365 Exchange Online) where the provider handles all underlying hardware, OS, and email software. The customer retains administrative control to configure custom email policies, create user accounts, and manage distribution groups via a web console or PowerShell, without any server or software maintenance.

Answer

Infrastructure as a Service (IaaS)

Answer

Platform as a Service (PaaS)

Answer

On-premises deployment

Question 7

A technician builds a new workstation with an AMD Ryzen 7 CPU (with integrated graphics) and a compatible B550 motherboard. The technician installs 32 GB (2x16 GB) of DDR4-3600 RAM in the recommended slots (A2, B2). When powering on, the system fans spin, but there is no video output. The monitor is connected to the motherboard's HDMI port. The technician tries a different monitor and cable, with no success. Which of the following is the most likely cause?

Accepted Answer

B. The BIOS needs to be updated to support the CPU. The AMD Ryzen 7 CPU requires a BIOS version that supports its architecture. B550 motherboards were released before some Ryzen 7 models (e.g., 5000 series), so the BIOS may need an update to recognize the CPU. Without CPU initialization, the integrated graphics cannot output video, even though fans spin and power is present.

Answer

A. The RAM is too fast for the CPU's memory controller

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C. The motherboard's CMOS battery is dead

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D. The CPU requires a discrete GPU to output video

Question 8

A global e-commerce company is designing a cloud architecture for its customer-facing website. The website experiences unpredictable traffic spikes during promotions. The company requires that during a regional cloud provider outage, all traffic is automatically redirected to a fully operational region with no manual intervention. Additionally, the company must ensure that all virtual machines across regions use identical configurations and a single management interface. Which cloud characteristic does the primary requirement address?

Accepted Answer

High availability. The primary requirement—automatic traffic redirection to a fully operational region during a regional outage with no manual intervention—directly defines high availability. High availability ensures that a system remains accessible by eliminating single points of failure through redundancy and automated failover mechanisms, such as DNS-based routing (e.g., using health checks and failover policies) or global load balancers that detect region failures and reroute traffic seamlessly.

Answer

Elasticity

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Resource pooling

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Measured service

Question 9

A user reports that their workstation can access the internet and other network resources by IP address, but cannot connect to an internal file server (fileserver.company.local) by its hostname. Other users on the same network can access the file server by hostname without issue. The workstation's IP configuration is static: IP 192.168.1.10, subnet mask 255.255.255.0, default gateway 192.168.1.1, and DNS server 192.168.1.1. The technician pings the IP address of the file server (192.168.1.100) successfully from the affected workstation. Which of the following is the MOST likely cause of the issue?

Accepted Answer

The local hosts file has an incorrect mapping for the file server. The workstation can access resources by IP address but not by hostname, and other users can resolve the hostname successfully, indicating a local name resolution issue. The hosts file on the affected workstation likely contains an incorrect or outdated mapping for fileserver.company.local, overriding DNS resolution. Since the DNS server is working for other users and the workstation can ping the file server by IP, the problem is isolated to the local hosts file.

Answer

The workstation's network cable is faulty

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The DNS server is not configured to resolve internal hostnames

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A firewall rule is blocking port 445 (SMB) on the workstation

Question 10

A user reports that their mobile phone's battery drains significantly faster than normal. The technician checks the battery usage statistics and finds that a specific social media app is consuming an unusually high percentage of battery. Which of the following is the FIRST step the technician should take to resolve the issue?

Accepted Answer

Force stop the application. Force stopping the application immediately halts the misbehaving process and its background services, which is the fastest way to stop excessive battery drain without affecting other system components. This is the first troubleshooting step because it isolates the issue to the app itself, allowing the technician to verify if the app is the root cause before taking more drastic measures.

Answer

Replace the battery

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Recalibrate the battery

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Perform a factory reset

Question 11

A technician replaced the toner cartridge in a laser printer. Now the printer produces pages with vertical black streaks down the entire page. The toner cartridge is confirmed to be a genuine, new cartridge. Which component should the technician inspect or replace NEXT?

Accepted Answer

Inspect and replace the imaging drum. Vertical black streaks down the entire page indicate a defect on the imaging drum, such as a scratch or toner buildup. Since the toner cartridge is confirmed genuine and new, the issue is not with the toner itself but with the drum unit, which transfers the image to the paper. Replacing the imaging drum will resolve the streaks.

Answer

Inspect and replace the fuser assembly

Answer

Inspect and clean the transfer roller

Answer

Inspect and replace the pickup roller

Question 12

A user reports that their Android smartphone's touchscreen is unresponsive in a narrow vertical strip on the left side of the screen. The rest of the screen works normally. The user has removed the screen protector and cleaned the screen, but the issue persists. There is no visible damage, cracks, or discoloration. Which of the following is the MOST likely cause?

Accepted Answer

Digitizer failure. The touchscreen uses a digitizer layer to detect touch input. A narrow vertical strip of unresponsiveness, with no visible damage and after cleaning, indicates a localized failure of the digitizer's sensing grid. The LCD panel remains functional because display output is unaffected.

Answer

Software glitch requiring factory reset

Answer

Stuck pixel

Answer

LCD panel failure

Question 13

A small business owner wants to allow remote employees to access a file server on the company's internal network from the internet. The company has a single public IP address provided by the ISP and a router that performs NAT. The file server has a static private IP address of 192.168.1.100. Which of the following router configuration settings should the technician use to enable this access?

Accepted Answer

Port forwarding. Port forwarding allows the router to direct incoming traffic from the internet (on a specific port) to the internal file server at 192.168.1.100. Since the company has only one public IP and uses NAT, port forwarding is the standard method to make an internal server reachable from the internet without exposing the entire LAN.

Answer

VLAN configuration

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DHCP reservation

Answer

MAC address filtering

Question 14

A user reports that their laptop can see the corporate Wi-Fi network (SSID: CorpNet) and has a strong signal, but cannot connect. Other users on the same network are connecting successfully. The technician checks the laptop's wireless configuration and finds that it is set to obtain an IP address automatically. However, the security settings are set to 'Open'. Which of the following is the MOST likely reason the laptop cannot connect?

Accepted Answer

The laptop is using the wrong encryption type.. The laptop's security settings are set to 'Open', but CorpNet is a corporate Wi-Fi network that almost certainly uses WPA2 or WPA3 encryption. Since the laptop sees the network with a strong signal but fails to connect, the mismatch between the 'Open' (no encryption) setting and the required encryption type prevents successful authentication and association, even though the IP configuration is set to DHCP.

Answer

The laptop's MAC address is not allowed (MAC filtering).

Answer

The laptop is trying to connect to the 5 GHz band but the network is only 2.4 GHz.

Answer

The laptop's wireless adapter is faulty.

Question 15

A user reports that their smartphone’s battery drains very quickly, even when not actively in use. The technician notes that the device feels warm to the touch, the screen brightness is set to maximum, and several apps are running in the background. The device is running the latest OS version. Which of the following should the technician recommend as the FIRST step to address the battery drain?

Accepted Answer

Reduce the screen brightness and close unused background apps. The most immediate and effective first step is to reduce screen brightness and close unused background apps because the display is the largest power consumer in a smartphone, and background apps can keep the CPU active, generating heat and draining the battery. Since the device is already on the latest OS version and the symptoms point to user-configurable settings rather than hardware failure, this non-invasive step directly addresses the two most likely causes of rapid drain.

Answer

Replace the battery with a new OEM battery

Answer

Perform a factory reset and restore from a recent backup

Answer

Update the device’s operating system