220-1101 Practice Exam 62 — 20 Questions

Question 1

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. The correct answer is A: 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 2

A company hosts a critical web application on a virtual machine (VM) in a public cloud. The application experiences sudden, unpredictable traffic spikes that require additional CPU and memory resources for a few hours at a time. The cloud provider automatically provisions and releases these resources based on real-time demand, without any manual intervention from the IT team. Which essential characteristic of cloud computing does this scenario BEST describe?

Accepted Answer

Elasticity. The scenario describes elasticity, which is the ability of a cloud system to automatically scale resources (CPU, memory) up or down in real-time based on demand, without manual intervention. This is a core characteristic of cloud computing, distinct from high availability or fault tolerance, as it focuses on dynamic resource provisioning to match workload spikes.

Answer

High availability

Answer

Load balancing

Answer

Fault tolerance

Question 3

A user's iPhone is connected to Wi-Fi and has an active cellular data plan. The user can send and receive regular SMS text messages, but cannot send iMessages. The recipient's device supports iMessage and other users can message that recipient without issues. The technician has already confirmed that the user's Apple ID is signed in correctly. Which of the following should the technician check NEXT?

Accepted Answer

Check the date and time settings and ensure they are set automatically. iMessage relies on Apple's push notification service and requires accurate date and time settings to establish a secure TLS connection with Apple's servers. If the date and time are incorrect, the SSL/TLS certificate validation fails, preventing iMessage from activating or sending messages even though SMS (which uses the cellular network's SS7 signaling) works fine. Since the Apple ID is confirmed correct and the recipient's device supports iMessage, the next logical step is to check and set the date and time to automatic.

Answer

Verify that Do Not Disturb is not enabled

Answer

Inspect the blocked contacts list in the Messages app

Answer

Update the APN settings for the cellular data connection

Question 4

A technician is setting up a small network with a router, a 24-port unmanaged switch, and 15 computers. The router's DHCP server assigns IP addresses in the 192.168.1.0/24 range. All computers get valid IP addresses and can access the internet, but they cannot see each other in the network discovery list. Which of the following is the MOST likely cause?

Accepted Answer

Network discovery and file sharing are disabled on the computers. The computers can access the internet and receive valid IP addresses from the router's DHCP server, indicating that Layer 3 connectivity is working. However, they cannot see each other in the network discovery list, which is a Layer 2/application-layer feature. Network discovery relies on the Function Discovery Resource Publication (FDResPub) and SSDP protocols, and file sharing relies on the SMB protocol; both are typically disabled by default on Windows machines for security reasons. Enabling network discovery and file sharing in the Network and Sharing Center resolves the visibility issue.

Answer

The switch is not configured with VLANs

Answer

The subnet mask is set to 255.255.0.0

Answer

The router's firewall is blocking LAN traffic

Question 5

A technician is installing additional RAM into a desktop computer. After installation, the computer powers on but emits a series of long beeps and does not display any video. The technician verifies that the new RAM module is the correct type (DDR4) for the motherboard and that it is listed on the motherboard's QVL. Which of the following is the MOST likely cause of the beep code?

Accepted Answer

The RAM module is not fully seated in the DIMM slot. The series of long beeps is a standard BIOS POST (Power-On Self-Test) code indicating a memory error. The most common cause after installing RAM is that the module is not fully seated in the DIMM slot, causing poor electrical contact. Even if the RAM is the correct type and on the QVL, an incomplete insertion will prevent the system from initializing memory and displaying video.

Answer

The RAM frequency is too high for the CPU's memory controller

Answer

The RAM module is installed in the wrong memory channel

Answer

The RAM voltage is set too low in the BIOS

Question 6

A technician is setting up a small office network. The router is connected to the ISP modem and has a public IP address on its WAN interface. The router's LAN is configured with DHCP on the 192.168.1.0/24 subnet. A workstation obtains an IP address of 192.168.1.10, subnet mask 255.255.255.0, and default gateway 192.168.1.1 from the router. The workstation can ping the gateway and other workstations on the same subnet, but it cannot access websites by IP address or domain name. Which of the following is the most likely cause?

Accepted Answer

Network Address Translation (NAT) is not enabled on the router.. The workstation can ping the gateway and local devices, indicating Layer 2/3 connectivity within the LAN is functional. However, it cannot reach external websites by IP or domain name, which points to a failure in translating private IP addresses to the public IP on the WAN interface. Network Address Translation (NAT) is required on the router to map the private 192.168.1.0/24 subnet to the public IP; without it, packets from the workstation have no routable source address on the internet, so responses cannot return.

Answer

The workstation's DNS server is not configured correctly.

Answer

The workstation's subnet mask is incorrect.

Answer

The default gateway is incorrect.

Question 7

A technician is troubleshooting a desktop computer that shuts down unexpectedly after about 10 minutes of playing a graphics-intensive game. The technician checks the CPU temperature, which stays at 45°C at idle but reaches 95°C under load just before shutdown. The heatsink and fan are clean and spinning properly. The power supply is a 650W unit, and the graphics card is a high-end model that draws up to 350W. Which of the following is the MOST likely cause of the shutdowns?

Accepted Answer

The thermal paste between the CPU and heatsink has degraded. The CPU temperature reaching 95°C under load just before shutdown indicates a thermal throttling or thermal protection shutdown. Since the heatsink and fan are clean and spinning properly, the most likely cause is degraded thermal paste, which reduces heat transfer efficiency from the CPU to the heatsink, causing the CPU to overheat despite adequate cooling hardware.

Answer

The power supply is insufficient for the graphics card

Answer

The CPU fan is not spinning fast enough

Answer

The graphics card is overheating

Question 8

A technician is repairing a smartphone with a cracked screen. After replacing the screen assembly, the touch screen is completely unresponsive, although the display shows properly. The technician has verified that the digitizer flex cable is firmly seated in the connector on the motherboard. Which of the following should the technician check NEXT?

Accepted Answer

Check that the grounding screw for the digitizer is installed and tight. Option C is correct because many smartphone digitizer assemblies require a dedicated grounding screw to complete the circuit for capacitive touch sensing. Without this ground, the digitizer may receive power and data via the flex cable but cannot establish a stable reference voltage, causing the touch screen to be completely unresponsive even though the display works. The technician has already verified the flex cable connection, so checking the grounding screw is the logical next step.

Answer

Check that the LCD cable is properly connected

Answer

Check the digitizer cable for damage or improper orientation

Answer

Replace the battery

Question 9

A technician is troubleshooting a computer that cannot access any websites by their domain name (e.g., www.example.com) but can access websites by their IP address. The computer's IP configuration shows it received a valid IP address from the DHCP server. Which of the following is the MOST likely cause?

Accepted Answer

The DNS server address is incorrect or unreachable. The ability to access websites by IP address but not by domain name indicates that name resolution is failing. Since the computer has a valid IP address from DHCP, the most likely cause is that the DNS server address provided by DHCP is incorrect or unreachable, preventing the translation of domain names to IP addresses.

Answer

The default gateway is incorrect

Answer

The subnet mask is incorrect

Answer

The DHCP lease has expired

Question 10

A technician is troubleshooting a desktop computer that powers on, all fans spin, and the keyboard lights flash, but the monitor displays 'No Signal'. The monitor and video cable are known to work with another computer. The technician has already reseated the RAM and tested with known-good RAM. The motherboard has no diagnostic LEDs or speaker. Which of the following should the technician do NEXT?

Accepted Answer

Reseat the CPU. The symptoms—power on, fans spinning, keyboard lights flashing, but no display—indicate that the motherboard is receiving power and the CPU is likely initializing, but the system is failing to complete POST. Since the RAM has been reseated and tested with known-good modules, the next most probable cause is a loose or improperly seated CPU. Reseating the CPU ensures proper contact with the socket pins, which is critical for the CPU to communicate with the chipset and memory controller. This step follows the logical troubleshooting flow of checking the CPU before moving to the power supply or other components.

Answer

Reseat the CPU power connector

Answer

Test the monitor with a different cable

Answer

Replace the power supply

Question 11

A technician is troubleshooting a desktop computer that fails to boot after a power surge during a thunderstorm. The computer's power LED illuminates briefly when the power button is pressed, but then nothing happens. The technician has tested the power supply with a multimeter and it outputs correct voltages. Which of the following components is MOST likely damaged?

Accepted Answer

Motherboard. The correct answer is C (Motherboard). Even though the power supply outputs correct voltages under multimeter testing, a power surge can damage the motherboard's voltage regulation modules (VRMs) or power management IC, preventing the system from completing the POST sequence. The brief power LED illumination indicates the PSU is functional, but the motherboard fails to sustain the boot process, which is a classic symptom of motherboard damage from a surge.

Answer

CPU

Answer

RAM

Answer

Hard drive

Question 12

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 13

A technician is troubleshooting an issue where users in one department cannot access the internet, but they can access shared files on the local network. The router's status lights indicate WAN connectivity is active. Which of the following should the technician check FIRST?

Accepted Answer

DNS server settings on the affected computers. The symptom—users can access local resources but not the internet—strongly suggests a name resolution failure. Since the router's WAN light is active, the physical and data-link layers to the ISP are up, so the issue is likely at the application layer. Checking DNS server settings on the affected computers is the first logical step because if the DNS server address is incorrect or unreachable, domain names cannot be resolved, making internet access appear down even though IP connectivity exists.

Answer

DHCP scope exhaustion

Answer

Firewall settings on the router

Answer

Faulty network cable from the department switch to the router

Question 14

A cloud administrator can log into a web portal at any time, day or night, and immediately provision a new virtual server with the desired resources without having to contact the cloud provider's support team or wait for approval. Which essential characteristic of cloud computing does this scenario BEST describe?

Accepted Answer

On-demand self-service. The scenario describes on-demand self-service because the cloud administrator can provision a virtual server instantly via a web portal without human interaction. This characteristic, defined by NIST SP 800-145, allows users to automatically configure computing resources as needed, eliminating the need for manual approval or support tickets.

Answer

Broad network access

Answer

Resource pooling

Answer

Measured service

Question 15

A cloud provider tracks a customer's usage of storage, processing power, and network bandwidth on a per-hour basis. At the end of the month, the customer receives a bill that exactly matches the resources consumed. Which essential cloud characteristic does this scenario BEST illustrate?

Accepted Answer

C. Measured service. The scenario describes a cloud provider tracking resource usage (storage, processing power, network bandwidth) per hour and billing exactly for what was consumed. This directly illustrates the 'Measured service' characteristic, where cloud systems automatically control and optimize resource use by leveraging a metering capability at some level of abstraction appropriate to the type of service (e.g., storage, processing, bandwidth, and active user accounts). The pay-per-use billing model is a direct outcome of this measured service.

Answer

A. Rapid elasticity

Answer

B. On-demand self-service

Answer

D. Resource pooling

Question 16

A company needs to migrate its customer relationship management (CRM) application to the cloud. The application runs on a custom operating system, and the IT team requires full administrative control over the OS and all installed software. Additionally, compliance regulations mandate that the underlying physical servers must be dedicated solely to the company's workloads. Which cloud service model BEST meets these requirements?

Accepted Answer

Infrastructure as a Service (IaaS) with dedicated hosts. Infrastructure as a Service (IaaS) with dedicated hosts provides full administrative control over the custom operating system and all installed software, while ensuring that the physical servers are not shared with other tenants. This model meets the compliance requirement for dedicated hardware because the cloud provider allocates specific physical servers exclusively to the company, giving the IT team the same level of control as on-premises infrastructure.

Answer

Platform as a Service (PaaS)

Answer

Software as a Service (SaaS)

Answer

Public cloud with shared servers

Question 17

A company hosts a critical application on a public cloud platform. The IT team configures the application to run on multiple virtual machines in an auto-scaling group. The cloud platform monitors the health of each instance. If a health check fails, the platform automatically terminates the unhealthy instance and launches a new one to maintain the desired capacity. Which cloud concept does this configuration BEST illustrate?

Accepted Answer

High availability. This configuration best illustrates high availability because the auto-scaling group and health check mechanism ensure that the application remains accessible despite instance failures. By automatically replacing unhealthy instances, the system minimizes downtime and maintains service continuity, which is the core goal of high availability in cloud computing.

Answer

Elasticity

Answer

Fault tolerance

Answer

Disaster recovery

Question 18

A company hosts a web application on a virtual machine in a public cloud. During lunch hours, traffic increases dramatically, and the cloud provider automatically provisions additional compute resources to handle the load. When traffic subsides, the extra resources are automatically released. Which essential characteristic of cloud computing does this scenario BEST describe?

Accepted Answer

Rapid elasticity. The scenario describes automatic scaling up and down of compute resources in response to demand, which is the defining behavior of rapid elasticity. This characteristic allows cloud resources to be provisioned and released quickly, often automatically, to match workload fluctuations. The key here is the dynamic, automated scaling triggered by traffic changes, not just the ability to request resources manually.

Answer

Resource pooling

Answer

Measured service

Answer

On-demand self-service

Question 19

A company wants to deploy a custom web application. They need full control over the operating system, middleware, and runtime environment, but they do not want to manage the underlying physical hardware, such as servers, storage, and networking equipment. Which cloud service model BEST meets this requirement?

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 runtime environment while the cloud provider manages the underlying physical hardware (servers, storage, networking). This matches the requirement exactly, as the company retains administrative access to the OS and software stack without needing to manage physical infrastructure.

Answer

Platform as a Service (PaaS)

Answer

Software as a Service (SaaS)

Answer

Desktop as a Service (DaaS)

Question 20

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

Answer

The battery is not fully seated

Answer

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