220-1101 Practice Test 15 — 15 Questions

Question 1

An iPhone 12 charges slowly when connected to a laptop's USB 3.0 port, but charges normally when using the original wall adapter and cable. The technician has already tested the cable with the wall adapter and it works correctly. Which of the following is the MOST likely cause of the slow charging?

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

Accepted Answer

The laptop's USB port provides lower amperage than the wall adapter. USB 3.0 ports on laptops typically provide a maximum of 0.9A (900mA) of current, while the iPhone 12's original wall adapter can deliver up to 2.4A or more via USB-A to Lightning, or 20W via USB-C Power Delivery. Since the cable works correctly with the wall adapter, the bottleneck is the laptop's USB port's lower amperage, which directly limits charging speed.

Answer

The Lightning cable is damaged

Answer

iOS battery optimization feature is limiting charging speed

Answer

The charging port on the iPhone is damaged

Question 2

A user reports that their iPhone screen is cracked in the bottom-left corner. The display works correctly, but the touch input in the cracked area is unresponsive. The rest of the touchscreen functions normally. Which of the following is the BEST repair option?

Accepted Answer

Replace the complete screen assembly. The iPhone uses a fused display assembly where the LCD, digitizer, and glass are bonded together. Since the digitizer (touch layer) is damaged in the cracked area, replacing only the digitizer is not practical without specialized equipment to separate it from the LCD. Replacing the complete screen assembly restores both display and touch functionality, making it the best option.

Answer

Replace only the digitizer

Answer

Replace only the LCD

Answer

Apply a tempered glass screen protector

Question 3

A company uses a public cloud IaaS provider. A developer needs to create a new virtual machine for testing. The developer logs into the cloud management console, selects the desired OS and size, and launches the VM. The VM is ready within minutes. No interaction with the cloud provider's staff is required. Which cloud computing characteristic does this best represent?

Accepted Answer

On-demand self-service. The scenario describes a user provisioning a virtual machine without any human interaction with the cloud provider, which is the defining characteristic of on-demand self-service. This capability is a core NIST definition of cloud computing, allowing users to automatically provision computing resources as needed without requiring service provider intervention.

Answer

Resource pooling

Answer

Rapid elasticity

Answer

Measured service

Question 4

A user reports that their desktop computer shuts down unexpectedly after about 30 minutes of use. The technician reads CPU temperature sensors in BIOS and sees the CPU idles at 45°C but quickly rises to 95°C under load before the system shuts down. The heatsink fan is spinning. Which of the following is the most likely cause?

Accepted Answer

The thermal paste between CPU and heatsink has dried out.. The CPU idles at 45°C but quickly spikes to 95°C under load, triggering a thermal shutdown. Since the heatsink fan is spinning, the most likely cause is degraded thermal paste, which has lost its ability to efficiently transfer heat from the CPU die to the heatsink, leading to rapid overheating even with active cooling.

Answer

The power supply is failing.

Answer

The RAM has a timing error.

Answer

The motherboard VRM is overheating.

Question 5

A user reports that their iPhone's touchscreen is unresponsive after the device was accidentally dropped in a puddle. The technician dries the phone, performs a forced restart, and cleans the screen, but the touch remains unresponsive. However, the display still shows images correctly. Which component is most likely damaged?

Accepted Answer

Digitizer. The digitizer is the component responsible for converting touch input into electrical signals. Since the display still shows images correctly but the touchscreen is unresponsive, the LCD panel and backlight are functioning, isolating the damage to the digitizer layer.

Answer

LCD panel

Answer

Backlight

Answer

Battery

Question 6

A user reports that their smartphone battery percentage jumps erratically—for example, showing 50% then suddenly dropping to 10% and shutting down. The technician verifies the battery is not swollen, the charging port is clean, and the device charges normally. Which of the following should the technician try NEXT?

Accepted Answer

Calibrate the battery. The erratic battery percentage drop without physical swelling or charging issues indicates a software calibration problem, not a hardware failure. Calibrating the battery resets the fuel gauge chip's learned capacity values, allowing the operating system to accurately report charge levels. This is the correct next step before replacing the battery.

Answer

Replace the battery

Answer

Update firmware

Answer

Replace the charging port

Question 7

A company wants to move its email system to the cloud to reduce the burden of managing servers, operating systems, and software updates. The IT team wants to configure only user mailboxes, email rules, and spam settings through a web-based admin console. The cloud provider will handle all underlying infrastructure, platform, and application maintenance. Which cloud service model BEST meets these requirements?

Accepted Answer

Software as a Service (SaaS). Software as a Service (SaaS) delivers a fully managed application, including email, where the cloud provider handles all underlying infrastructure, platform, and application maintenance. The IT team only needs to configure user mailboxes, rules, and spam settings via a web-based admin console, which is the hallmark of SaaS. This model eliminates the burden of managing servers, operating systems, and software updates, directly matching the company's requirements.

Answer

Infrastructure as a Service (IaaS)

Answer

Platform as a Service (PaaS)

Answer

Desktop as a Service (DaaS)

Question 8

A user in a small office reports that their computer cannot access the internet. The technician runs ipconfig and sees the IP address is 169.254.15.22. The technician checks the network cable and sees link lights on the NIC and the wall jack. Which of the following is the MOST likely cause of this issue?

Accepted Answer

The DHCP server is not responding or is unreachable. The IP address 169.254.15.22 is an Automatic Private IP Addressing (APIPA) address (169.254.0.0/16 range), which Windows assigns when a DHCP server cannot be reached. Since the link lights are active, the physical layer is functional, ruling out a cable fault. The most likely cause is that the DHCP server is not responding or is unreachable, preventing the client from obtaining a valid IP configuration.

Answer

The network cable is faulty

Answer

The user's computer has a duplicate IP address on the network

Answer

The subnet mask is incorrectly configured

Question 9

A user reports that their Android tablet's Wi-Fi connection frequently drops and reconnects. Other devices on the same network are stable. The technician has already forgotten the Wi-Fi network, rebooted the tablet, and confirmed the network password is correct. Which of the following is the BEST next step?

Accepted Answer

A. Update the tablet's firmware/OS. Since the issue is isolated to a single device and basic troubleshooting (forgetting the network, rebooting, verifying password) has not resolved it, the most likely cause is a software bug or driver incompatibility in the tablet's current firmware or OS. Updating the firmware/OS can patch known Wi-Fi connectivity bugs, such as those related to 802.11 power-save mode or DHCP lease renewal, which often manifest as intermittent disconnects.

Answer

B. Change the Wi-Fi channel on the router

Answer

C. Replace the tablet's Wi-Fi antenna

Answer

D. Factory reset the tablet

Question 10

A company hosts its e-commerce website on a public cloud platform. During the holiday shopping season, traffic increases dramatically. The cloud platform automatically adds more virtual server instances to handle the increased load and then removes them when traffic returns to normal. Which cloud computing characteristic does this scenario BEST describe?

Accepted Answer

Rapid elasticity. The scenario describes the cloud automatically scaling virtual server instances up and down in response to traffic spikes, which is the defining characteristic of rapid elasticity. This allows resources to be provisioned and released elastically, often automatically, to match demand at any given time.

Answer

On-demand self-service

Answer

Measured service

Answer

Resource pooling

Question 11

A user reports that their Android smartphone's battery drains very quickly, even when the phone is not in use. The user has already closed all background apps, and the battery statistics show that the 'Screen' is the top consumer at 35%, which seems normal. The technician notices that the phone's back feels warm near the top. Which component is MOST likely faulty?

Accepted Answer

A: Battery. Battery. A faulty battery can cause rapid discharge and generate excessive heat, even when the phone is idle and background apps are closed. The warmth near the top of the phone is a classic symptom of internal battery degradation or a shorted cell, leading to increased internal resistance and heat generation.

Answer

B: Charging port

Answer

C: Proximity sensor

Answer

D: NFC chip

Question 12

A user reports that their network printer shows 'Offline' in the print queue on their Windows computer. The printer is powered on and has a link light on its network port. Other users on the same network can print to the printer without issue. Which of the following should the technician do FIRST?

Accepted Answer

Set the printer back online in the printer settings. The user's printer shows 'Offline' in the print queue, but it is powered on, has a link light, and other users can print to it. This indicates the printer and network are functioning correctly; the issue is that the printer's status on the user's computer has been set to 'Offline' or 'Use Printer Offline' in the printer properties. The first step is to set the printer back online by right-clicking the printer in 'Devices and Printers' and unchecking 'Use Printer Offline' or selecting 'See what's printing' and clicking 'Printer' > 'Use Printer Online'.

Answer

Restart the print spooler service on the user's computer

Answer

Reinstall the printer driver on the user's computer

Answer

Power cycle the printer

Question 13

A company runs its e-commerce platform on a private cloud but expects a large traffic spike during a promotional event. They want to automatically add additional virtual servers from a public cloud provider during the peak and release them afterward. Which cloud computing characteristic best describes this capability?

Accepted Answer

Elasticity. Elasticity is the cloud computing characteristic that allows resources to be automatically scaled up or down based on demand. In this scenario, the company uses a hybrid cloud model where additional virtual servers from a public cloud provider are provisioned during a traffic spike and released afterward, which is the definition of elasticity. This contrasts with scalability, which is the ability to handle growth over time, as elasticity specifically addresses dynamic, automated scaling to match fluctuating workloads.

Answer

High availability

Answer

Fault tolerance

Answer

Resource pooling

Question 14

A technician is replacing the central processing unit (CPU) on a motherboard that features an LGA1200 socket. Which of the following CPU families is MOST likely compatible with this socket?

Accepted Answer

Intel Core i7-10700K. The LGA1200 socket is designed for Intel's 10th and 11th generation Comet Lake and Rocket Lake processors. The Intel Core i7-10700K is a 10th generation Comet Lake CPU that uses the LGA1200 socket, making it the correct choice.

Answer

AMD Ryzen 7 3700X

Answer

Intel Core i5-8400

Answer

Intel Core i7-4770K

Question 15

A company wants to deploy a custom web application in the cloud. They need full control over the operating system and software stack, including the ability to install and configure the web server, database, and security patches. They do not want to manage the underlying physical hardware or hypervisor. Which cloud service model best meets their requirements?

Accepted Answer

Infrastructure as a Service (IaaS). Infrastructure as a Service (IaaS) provides virtualized computing resources over the internet, giving the customer full control over the operating system, middleware, and applications while the cloud provider manages the underlying physical hardware and hypervisor. This matches the requirement for full OS and software stack control without managing physical infrastructure.

Answer

Platform as a Service (PaaS)

Answer

Software as a Service (SaaS)

Answer

Desktop as a Service (DaaS)