220-1101 Practice Test 48 — 15 Questions

Question 1

A user reports that their desktop computer cannot access the internet, but it can access internal network resources and other computers on the local network. The technician runs ipconfig and sees the IP address is 169.254.15.22. Which of the following is the MOST likely cause of this issue?

Accepted Answer

The DHCP server is not responding. The IP address 169.254.15.22 is an Automatic Private IP Addressing (APIPA) address (169.254.0.0/16), which Windows assigns when a DHCP server is unreachable. Since the computer can still access local resources, the network stack is functional, but without a valid DHCP lease, it cannot obtain a routable IP, default gateway, or DNS server, thus losing internet access.

Answer

The DNS server is not responding

Answer

The default gateway is misconfigured

Answer

The network cable is unplugged

Question 2

A user reports that their desktop computer randomly restarts during gaming sessions. The technician has replaced the power supply unit (PSU) with a known-good unit of higher wattage, verified that CPU and GPU temperatures remain within normal limits during gaming, and updated all drivers. The RAM passes a memory test. Which of the following should the technician check NEXT?

Accepted Answer

Check the wall outlet voltage with a multimeter.. The technician has already ruled out the PSU, overheating, driver issues, and faulty RAM. Random restarts under load can be caused by unstable or insufficient AC power from the wall outlet. Using a multimeter to check the wall outlet voltage is the logical next step to identify if the issue is upstream of the PSU, such as a sagging voltage or a loose neutral connection.

Answer

Replace the motherboard.

Answer

Disable automatic restart in Windows System Properties.

Answer

Run a stress test on the GPU.

Question 3

A user reports that their desktop computer shuts down unexpectedly while running video editing software, usually after about 15 minutes of heavy rendering. The technician has observed that the CPU fan and case fans spin at high speed just before the shutdown. The technician cleaned all dust from the heatsink and case intakes, but the problem persists. The BIOS reports CPU idle temperature at 35°C (95°F). Which of the following should the technician do NEXT?

Accepted Answer

Replace the thermal paste between the CPU and heatsink. The CPU idle temperature of 35°C is normal, but the shutdown after 15 minutes of heavy rendering with high fan speeds indicates the CPU is overheating under load. Since cleaning the dust did not resolve the issue, the most likely cause is degraded thermal paste between the CPU and heatsink, which loses its ability to transfer heat efficiently over time. Replacing the thermal paste restores proper thermal conductivity, allowing the heatsink to dissipate heat effectively and prevent thermal throttling or shutdown.

Answer

Replace the CPU cooler with a larger model

Answer

Update the motherboard BIOS to the latest version

Answer

Test the power supply voltage rails under load with a multimeter

Question 4

A user reports that their iPhone 14 Pro will not connect to a corporate Wi-Fi network that uses WPA2-Enterprise with 802.1X authentication. The user can see the network in the Wi-Fi list and selects it, but after entering their username and password, the connection fails with a generic 'Unable to join the network' error. Other iOS devices in the office connect to the same network without issues. The technician has already restarted the iPhone, forgotten the network, and re-entered the credentials. Which of the following should the technician try NEXT?

Accepted Answer

Install the required root or authentication certificate on the iPhone.. WPA2-Enterprise with 802.1X authentication requires a RADIUS server and often uses digital certificates (e.g., X.509) to validate the server's identity before the client sends credentials. The generic 'Unable to join the network' error after entering credentials, while other iOS devices connect successfully, strongly indicates a missing or untrusted root or authentication certificate on the iPhone. Installing the required certificate (often via a configuration profile or trusted certificate authority) resolves the trust chain issue, allowing EAP-TLS or PEAP to complete.

Answer

Reset the iPhone's network settings.

Answer

Update the iPhone to the latest version of iOS.

Answer

Change the Wi-Fi security to WPA2-Personal on the access point.

Question 5

A user reports that their desktop computer's built-in Ethernet port is not working. The link light on the computer's NIC is off, and the user cannot connect to the network. The technician has verified that the Ethernet cable and switch port work with another computer. Which of the following should the technician check NEXT?

Accepted Answer

Check the network adapter settings in Device Manager. Since the Ethernet cable and switch port are verified working with another computer, the issue is isolated to the desktop itself. The link light being off indicates the NIC is not establishing a physical or data-link layer connection. Checking the network adapter in Device Manager is the next logical step to see if the adapter is disabled, has a driver error, or is not detected by the OS, which would prevent the NIC from initializing and lighting the link LED.

Answer

Replace the motherboard

Answer

Update the network adapter driver

Answer

Reinstall the operating system

Question 6

A user reports that their desktop monitor displays 'No Signal' after the user moved the desk. The technician observes that the monitor's power LED is on, the computer's fans are spinning, and the power light on the PC case is lit. The video cable (HDMI) is securely connected at both ends. Which of the following should the technician check NEXT?

Accepted Answer

Check the monitor's input source setting. The monitor's power LED is on and the HDMI cable is securely connected, but the screen shows 'No Signal'. This indicates the monitor is receiving power but not detecting a video input. The most likely cause after moving the desk is that the monitor's input source setting changed (e.g., from HDMI to DisplayPort or VGA) due to accidental button presses during the move. Checking and correcting the input source is the quickest, non-invasive step before replacing hardware.

Answer

Replace the video card

Answer

Reseat the RAM modules

Answer

Test the HDMI cable with a known-good device

Question 7

A user reports that their iPhone cannot send iMessages to another iPhone user. Text messages (SMS) to the same contact work normally. The user has a strong cellular data connection and iMessage is enabled in Settings. Which of the following should the technician check FIRST to resolve the issue?

Accepted Answer

The recipient's phone number is registered with Apple's iMessage service. iMessage relies on Apple's push notification service (APNs) and requires the recipient's phone number to be registered with Apple's iMessage servers. If the recipient's number is not registered, the iPhone will fall back to SMS for that contact, but since SMS works normally, the issue is specifically that the recipient's number is not associated with iMessage. The strong cellular data connection confirms that the network path to Apple's servers is functional, so the first logical check is the recipient's iMessage registration status.

Answer

The user's iPhone has Do Not Disturb enabled

Answer

The user's iPhone is updated to the latest iOS version

Answer

The network operator's MMS settings (APN) are correctly configured

Question 8

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 9

A user reports that their smartphone battery drains significantly faster after a recent OS update. Which of the following should the technician do FIRST to address this issue?

Accepted Answer

Check the battery usage statistics in the settings menu. Option C is correct because the first step in troubleshooting battery drain after an OS update is to check the battery usage statistics in the settings menu. This allows the technician to identify which apps or services are consuming excessive power, often due to background processes or misconfigured settings introduced by the update. Replacing hardware or performing a full OS reinstall without first diagnosing the cause is premature and may not resolve the issue.

Answer

Replace the battery with a new one

Answer

Perform a factory reset and restore from backup

Answer

Reinstall the operating system using the latest firmware

Question 10

A user reports that their laptop cannot detect any wireless networks. The technician sees that the Wi-Fi adapter is enabled in the device manager and has no errors. The laptop has a physical wireless switch on the front edge and a function key (Fn) combination to toggle Wi-Fi. Which of the following should the technician check FIRST?

Accepted Answer

Whether the physical wireless switch is in the ON position. The physical wireless switch is a hardware-level cutoff that can completely disable the Wi-Fi radio, regardless of driver or software settings. Since the adapter shows as enabled in Device Manager with no errors, the most likely cause is that the switch is in the OFF position, which prevents the radio from scanning for networks. Checking this is the fastest and simplest first step before moving to software or driver troubleshooting.

Answer

Whether the network driver needs to be updated

Answer

Whether the Windows Firewall is blocking network discovery

Answer

Whether the antenna cables are connected to the wireless card

Question 11

A company develops a custom web application that requires a specific runtime environment and middleware. The company wants to avoid managing the underlying servers, operating system patches, and runtime scaling. They choose a cloud service where they can upload their application code and the provider automatically handles the OS, runtime, and scaling based on demand. Which cloud service model does this describe?

Accepted Answer

Platform as a Service (PaaS). This scenario describes Platform as a Service (PaaS), where the cloud provider manages the underlying infrastructure, operating system, runtime environment, and middleware. The customer only needs to upload their application code, and the provider automatically handles scaling, patching, and runtime dependencies. This contrasts with IaaS, where the customer manages the OS and runtime, and SaaS, where the provider delivers a fully functional application.

Answer

Infrastructure as a Service (IaaS)

Answer

Software as a Service (SaaS)

Answer

Desktop as a Service (DaaS)

Question 12

A technician is troubleshooting a desktop PC that randomly restarts during intensive tasks, such as rendering video. The technician has replaced the power supply, updated drivers, run memory diagnostics, and verified CPU temperatures. The problem persists. The technician examines the motherboard and notices that several capacitors near the CPU socket appear slightly domed on top. Which of the following is the MOST likely cause of the random restarts?

Accepted Answer

The motherboard has failing capacitors causing voltage instability.. Domed capacitors indicate that the electrolytic fluid inside has leaked or the capacitor has failed, leading to an inability to maintain stable voltage regulation. Under the high current draw of intensive tasks like video rendering, this voltage instability causes the motherboard to trigger a reset or shutdown to protect components. Since the technician has already replaced the power supply and verified CPU temperatures, the failing capacitors are the most likely remaining cause.

Answer

The CPU is failing under load.

Answer

The hard drive is failing.

Answer

The operating system is corrupt.

Question 13

A user reports that their smartphone's touch screen is unresponsive. The technician observes that the screen is cracked and has visible black spots. The phone still powers on and the physical buttons work. Which of the following components is MOST likely faulty?

Accepted Answer

Digitizer. The digitizer is the layer responsible for converting touch input into electrical signals. A cracked screen with visible black spots indicates physical damage to the digitizer layer, which directly causes unresponsiveness to touch. The LCD display may still function (showing an image) even when the digitizer is broken, which matches the symptom of the phone powering on and physical buttons working.

Answer

LCD display

Answer

Battery

Answer

Motherboard

Question 14

A user reports that their network printer is not responding to print jobs sent from their Windows workstation. The technician can successfully ping the printer's IP address (192.168.1.50) from the user's computer. The printer's web interface shows it is online and ready. The technician checks the print queue on the workstation and sees documents stuck with an 'Access Denied' error. Which of the following should the technician check NEXT?

Accepted Answer

Verify printer permissions and ensure the correct driver is installed.. The 'Access Denied' error in the print queue indicates a permissions or driver mismatch issue, not a connectivity problem. Since the printer is reachable via ping and its web interface shows it is online, the network and printer hardware are functional. The next logical step is to verify that the user has the necessary permissions to print and that the correct printer driver is installed, as an incompatible or corrupted driver can cause access errors.

Answer

Replace the Ethernet cable connecting the printer.

Answer

Restart the Windows Print Spooler service.

Answer

Assign a static IP address to the printer.

Question 15

A company hosts a web application on a public cloud. The application experiences unpredictable traffic spikes. The cloud provider automatically provisions additional virtual servers to handle increased load and decommissions them when traffic subsides. The company is billed only for the compute time actually consumed. Which cloud computing characteristic does this scenario BEST describe?

Accepted Answer

Elasticity. Elasticity is the correct answer because the scenario describes the ability to automatically provision and decommission virtual servers in response to unpredictable traffic spikes, with billing only for actual compute time consumed. This matches the cloud computing characteristic of elasticity, which specifically refers to dynamic scaling of resources up or down on demand, as opposed to scalability which is the capacity to handle growth over time.

Answer

Scalability

Answer

High availability

Answer

Fault tolerance