220-1101 Practice Test 28 — 15 Questions

Question 1

A user reports that their Android smartphone's battery drains very quickly, even when the phone is idle. The phone also feels unusually warm near the back cover. The technician has already checked that no apps are running abnormally in the background and the screen brightness is set to auto. Which component is MOST likely faulty?

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

Accepted Answer

Battery. The battery is the most likely faulty component because a degraded or internally shorted lithium-ion battery can cause rapid self-discharge and excessive heat generation even when the device is idle. The technician has already ruled out abnormal background apps and screen brightness, which isolates the issue to the battery's internal chemistry or protection circuit.

Answer

Charging port

Answer

Display screen

Answer

Processor (SoC)

Question 2

A small business uses a public cloud IaaS provider to host its website. The business is charged monthly based on the total amount of CPU time, storage capacity used, and data transferred. The business can view detailed usage reports through the provider's portal. Which essential cloud characteristic does this billing model BEST demonstrate?

Accepted Answer

Measured service. The billing model charges based on actual usage metrics (CPU time, storage, data transfer), which is the defining characteristic of measured service. In cloud computing, measured service means that resource usage is monitored, controlled, and reported, enabling pay-per-use billing. This is distinct from simply provisioning resources on demand or pooling them.

Answer

Resource pooling

Answer

Rapid elasticity

Answer

On-demand self-service

Question 3

A company hosts its customer-facing web application on a public cloud IaaS platform. The application runs on multiple virtual machines. The IT team configures the platform to automatically distribute incoming traffic across the healthy VMs and to reroute traffic away from any VM that fails. Which cloud concept does this configuration BEST describe?

Accepted Answer

Load balancing. The configuration described—automatically distributing incoming traffic across healthy VMs and rerouting traffic away from any failed VM—is the definition of load balancing. Load balancers (e.g., HAProxy, AWS ELB, NLB) use health checks (e.g., HTTP 200, TCP SYN) to monitor VM status and remove unhealthy nodes from the pool, ensuring traffic is only sent to responsive instances. This directly matches the scenario of distributing traffic and rerouting on failure.

Answer

Auto-scaling

Answer

High availability

Answer

Elasticity

Question 4

A network technician is installing a new IP security camera that requires Power over Ethernet (PoE) IEEE 802.3af. The technician runs a new Cat6 Ethernet cable between a PoE switch port and the camera. The switch is PoE-enabled and configured to supply power. When the camera is connected, it does not power on. The technician tests the cable with a continuity tester, and all eight wires pass. Which of the following is the most likely cause of the issue?

Accepted Answer

The switch port is administratively disabled in the switch configuration.. The most likely cause is that the switch port is administratively disabled. Even though the switch is PoE-enabled and the cable passes continuity, if the port is in a shutdown state (e.g., via the 'shutdown' command in Cisco IOS), it will not provide power or data to the camera. The technician should verify the port status with 'show interfaces' or 'show running-config' and enable it with 'no shutdown'.

Answer

The cable run exceeds the maximum length for PoE (100 meters).

Answer

The camera requires PoE+ (802.3at) and will not work with standard PoE.

Answer

The cable is terminated with T568A on one end and T568B on the other.

Question 5

A user reports that printed pages from a laser printer contain vertical black streaks. The streaks appear in the same location on every page. The technician has already replaced the toner cartridge and the imaging drum with new OEM components. Which of the following printer components should the technician inspect NEXT?

Accepted Answer

Transfer roller. The transfer roller applies a positive charge to the paper to attract the negatively charged toner from the imaging drum. If the transfer roller is damaged or contaminated, it can fail to transfer toner evenly, leaving vertical streaks in the same location on every page. Since the toner cartridge and imaging drum have already been replaced, the transfer roller is the next most likely cause of this specific defect.

Answer

Fuser assembly

Answer

Pickup rollers

Answer

Primary corona wire

Question 6

A user reports that their desktop computer's monitor displays a 'No Signal' message. The computer's power LED is lit, and all fans are spinning. The technician has verified that the monitor power is on and that the HDMI cable is securely connected to both the monitor and the computer. The technician also tried a different monitor, which also shows 'No Signal'. Which of the following should the technician do NEXT?

Accepted Answer

Reseat the RAM. The 'No Signal' message with both monitors failing indicates the issue is likely with the computer's POST (Power-On Self-Test) process. Since the power LED is on and fans spin, the PSU is delivering power, but the system may be failing to initialize memory, preventing video output. Reseating the RAM is a quick, non-invasive step to ensure proper contact with the motherboard slot, as loose or misaligned RAM is a common cause of POST failure that results in no video signal.

Answer

Replace the graphics card

Answer

Check if the monitor input source is set correctly

Answer

Boot into Safe Mode

Question 7

A company runs critical virtual machines on a single physical server. The IT manager wants to ensure that if the physical server fails, the virtual machines continue to run automatically on another server with minimal downtime. Which feature should be configured on the virtualization platform?

Accepted Answer

High availability. High Availability (HA) is the correct feature because it automatically restarts virtual machines on a surviving host within a cluster when a physical server fails. HA uses heartbeat monitoring between hosts and, upon detecting a loss of heartbeat, triggers the VMs to be powered on elsewhere, achieving minimal downtime without manual intervention.

Answer

Resource pooling

Answer

Virtual desktop infrastructure

Answer

Virtual machine snapshots

Question 8

A user reports that their desktop computer will not turn on. The technician presses the power button, but no fans spin, no LEDs light up. The power supply unit (PSU) fan is not spinning. The technician verifies that the power cord is securely connected to the PSU and wall outlet, and that the outlet is functional (tested with a lamp). The PSU has a voltage selector switch set to 115V (correct for the region). Which of the following should the technician do NEXT?

Accepted Answer

Test the power supply unit using the paperclip test with a multimeter.. The correct next step is to test the PSU using the paperclip test with a multimeter. Since the system shows no signs of power (no fans, no LEDs) and the wall outlet is verified functional, the PSU is the primary suspect. The paperclip test (jumpering the green PS_ON# pin to any ground pin on the 24-pin connector) allows you to force the PSU to turn on independently of the motherboard, and a multimeter can then measure the voltage rails (e.g., +3.3V, +5V, +12V) to confirm if the PSU is dead or just failing to start under load.

Answer

Replace the power supply unit.

Answer

Reseat the 24-pin motherboard connector.

Answer

Replace the CMOS battery.

Question 9

A company uses a public cloud IaaS provider. They have a virtual machine that runs a legacy application requiring a static IP address. The VM needs to be migrated to a different physical host within the same datacenter due to scheduled maintenance. The application cannot tolerate more than a few seconds of downtime. Which feature should the cloud administrator use?

Accepted Answer

Live migration. Live migration (B) is correct because it allows a running virtual machine to be moved between physical hosts with virtually no downtime, typically under a second. This meets the requirement of a static IP address (the VM's network identity is preserved) and the sub-second tolerance for downtime during scheduled maintenance.

Answer

Auto-scaling

Answer

Snapshot and restore

Answer

High availability

Question 10

A user drops their smartphone onto a tile floor. The screen is not cracked and the phone powers on normally. However, the phone can no longer detect any Wi-Fi networks, even though other devices in the same location can. Bluetooth continues to work correctly. Which of the following components is MOST likely damaged?

Accepted Answer

The Wi-Fi antenna. The Wi-Fi antenna is a separate physical component from the Bluetooth antenna in many smartphones, even though they often share the same wireless chipset. A drop can break the tiny solder joints or the antenna trace itself, which would prevent the phone from detecting any Wi-Fi networks while leaving Bluetooth functional because Bluetooth uses a different antenna path. Since the phone powers on and the screen is intact, the impact likely damaged only the dedicated Wi-Fi antenna.

Answer

The NFC chip

Answer

The digitizer

Answer

The baseband processor

Question 11

A technician replaces the digitizer on a smartphone that had a cracked screen and an unresponsive touch area. After reassembly, the touch screen still does not respond in the area where the crack was. The technician has already verified that all flex cable connections to the digitizer are secure. Which of the following should the technician do NEXT?

Accepted Answer

Test the phone with a known-good digitizer. The technician has already verified that all flex cable connections to the digitizer are secure, yet the touch screen remains unresponsive in the same area. This indicates the replacement digitizer itself may be defective. Testing with a known-good digitizer isolates the issue to the digitizer component versus the phone's main board or software, following a logical hardware troubleshooting process.

Answer

Replace the LCD assembly

Answer

Calibrate the touch screen in the operating system

Answer

Update the phone's firmware

Question 12

An organization runs a critical database server on a VM in a public cloud. The VM uses an attached persistent block storage volume. The database must be migrated to a new VM with more resources in a different availability zone within the same cloud provider, with minimal downtime. The cloud provider does not offer a live migration feature across availability zones. Which of the following strategies BEST achieves minimal downtime?

Accepted Answer

Set up database replication to a new VM in the target zone, then cut over traffic once replication is caught up.. Database replication (e.g., using native MySQL replication or PostgreSQL streaming replication) allows you to keep the new VM in the target zone synchronized with the source with minimal downtime. Once replication is caught up, you perform a brief cutover (seconds to minutes) by stopping writes on the source, applying any final changes, and redirecting traffic to the new VM. This avoids the hours of downtime required by snapshot-based or export/import methods.

Answer

Take a snapshot of the current volume, create a new volume from the snapshot in the target zone, and attach it to the new VM.

Answer

Use the cloud provider's live migration feature to move the VM to the target availability zone.

Answer

Export the VM as an OVA file, copy it to the target zone, and import it as a new VM.

Question 13

A company hosts its e-commerce web application on a public cloud IaaS platform. The application experiences unpredictable traffic spikes throughout the day. The cloud platform is configured to automatically add virtual machines when the average CPU utilization exceeds 80% and to remove virtual machines when utilization drops below 30%. The IT team does not need to manually approve these additions or removals. Which of the following essential cloud characteristics does this scenario BEST demonstrate?

Accepted Answer

Rapid elasticity. The scenario describes automatic scaling of virtual machines in response to CPU utilization thresholds, with no manual intervention required. This directly demonstrates rapid elasticity, which is the ability to quickly scale resources up or down to meet demand, often automatically. The unpredictable traffic spikes and the automatic addition/removal of VMs are the hallmark of this essential cloud characteristic.

Answer

Metered service

Answer

Resource pooling

Answer

On-demand self-service

Question 14

A technician installs a new SATA SSD into a desktop computer. After connecting the data and power cables, the computer powers on and boots into the operating system from the existing hard drive. However, the new SSD is not detected in File Explorer or Disk Management. The technician has verified that the SATA cable is securely connected and that the power supply is providing power (the SSD does not spin, but it is an SSD). Which of the following should the technician check NEXT?

Accepted Answer

Enable the SATA port in the BIOS/UEFI settings. The new SSD is not detected in Disk Management or File Explorer, which indicates the system is not recognizing the drive at the hardware level. Since the technician has already verified cable connections and power, the next logical step is to check whether the SATA port is enabled in the BIOS/UEFI settings. If the port is disabled, the operating system cannot enumerate the drive, and it will not appear in Disk Management or File Explorer.

Answer

Initialize the drive using Disk Management

Answer

Update the SSD firmware using a USB bootable tool

Answer

Replace the SATA cable with a known-good cable

Question 15

A user reports that their desktop computer runs for about ten minutes, then suddenly shuts down without warning. After a few minutes, it can be restarted, but the same problem occurs. The technician suspects overheating. Which of the following should the technician check FIRST?

Accepted Answer

Verify that the CPU fan spins freely when the system is powered on. The symptom of a system running for a short period, then shutting down and restarting after cooling, is classic for overheating. The CPU fan is the primary active cooling component; if it fails to spin, the CPU will quickly reach its thermal threshold (typically around 100°C for modern CPUs) and trigger a thermal shutdown. Checking that the fan spins freely is the quickest, least invasive first step to confirm basic cooling operation.

Answer

Reapply thermal paste between the CPU and heatsink

Answer

Replace the power supply unit (PSU)

Answer

Run a memory diagnostic tool like MemTest86