220-1101 Practice Test 50 — 15 Questions

Question 1

A user reports that their workstation cannot access network resources. The technician runs ipconfig and sees the following: IP address: 192.168.1.100, Subnet mask: 255.255.255.0, Default gateway: 192.168.1.1. The technician pings 127.0.0.1 (success), pings 192.168.1.100 (success), but pinging 192.168.1.1 fails. Other workstations on the same subnet can ping the default gateway successfully. The cable is connected and the link light is on. Which of the following is the MOST likely cause?

Accepted Answer

Duplicate IP address.. The workstation has a valid IP address and subnet mask, and the loopback (127.0.0.1) and its own IP (192.168.1.100) respond to ping, confirming the TCP/IP stack and network interface are working. The failure to ping the default gateway (192.168.1.1) while other workstations on the same subnet can reach it indicates a local issue. A duplicate IP address on the network would cause the workstation to receive no reply from the gateway because the gateway's ARP table may map the IP to another device's MAC address, or the duplicate device may respond with a conflicting ARP reply, preventing proper communication.

Answer

DNS server is not configured.

Answer

Incorrect subnet mask.

Answer

Firewall on the workstation blocking ICMP.

Question 2

A user reports that they cannot access the internet, but they can still access shared folders on the local network. The technician runs ipconfig on the workstation and sees an IP address of 169.254.10.15 with a subnet mask of 255.255.0.0. Which of the following is the MOST likely cause of this issue?

Accepted Answer

The DHCP server is unavailable. The IP address 169.254.10.15 with a subnet mask of 255.255.0.0 is an Automatic Private IP Addressing (APIPA) address, which Windows assigns when a DHCP server is unavailable or fails to respond. Since the user can still access local shared folders (local link-layer communication works), but cannot reach the internet, the core issue is the lack of a valid DHCP lease, not a DNS or gateway misconfiguration.

Answer

The DNS server is not responding

Answer

The default gateway address is incorrect

Answer

The workstation has a static IP address configured

Question 3

A user reports that their smartphone's camera app crashes whenever they attempt to take a photo with the flash enabled. The camera works normally without flash, and the flashlight app functions correctly. Which of the following components is MOST likely faulty?

Accepted Answer

Camera module. The camera module is the most likely faulty component because it contains the flash LED driver circuitry that synchronizes the flash with the camera sensor. When the flash is enabled, the camera module must coordinate the LED pulse with the image capture; a failure in this integrated circuit causes the app to crash, even though the standalone flashlight app works by bypassing the camera's synchronization logic.

Answer

Flash LED

Answer

Motherboard

Answer

Battery

Question 4

A development team wants to deploy a custom web application. They want to focus solely on writing and updating the application code without managing the underlying operating system, runtime, web server, or middleware. The team also wants the cloud provider to automatically handle patching of the OS and platform components. Which cloud service model BEST meets these requirements?

Accepted Answer

Platform as a Service (PaaS). Platform as a Service (PaaS) provides a managed platform that includes the operating system, runtime, web server, and middleware, allowing developers to focus solely on writing and updating application code. The cloud provider automatically handles patching of the OS and underlying platform components, which directly matches the team's requirement to avoid managing infrastructure.

Answer

Infrastructure as a Service (IaaS)

Answer

Software as a Service (SaaS)

Answer

Desktop as a Service (DaaS)

Question 5

A user reports that their workstation cannot access the internet or any network resources. The technician runs ipconfig and sees the IP address 169.254.10.55 with subnet mask 255.255.0.0. The Ethernet link lights are solid on both the NIC and the switch port. Which of the following is the MOST likely cause?

Accepted Answer

B. The IP address 169.254.10.55 with subnet mask 255.255.0.0 is an Automatic Private IP Addressing (APIPA) address, assigned by Windows when a DHCP server is unavailable. Since the link lights are solid, the physical layer is functional, but the workstation cannot obtain a valid IP address, indicating the most likely cause is a DHCP server failure or misconfiguration.

Answer

A

Answer

C

Answer

D

Question 6

A technician is troubleshooting a small office network. Users on one side of the office report very slow network speeds and occasional disconnections. The technician checks the unmanaged switch and notices that the link LED for the port connected to a particular workstation is rapidly alternating between green and amber. The workstation is able to obtain an IP address. Which of the following is the MOST likely cause of this issue?

Accepted Answer

Duplex mismatch between the switch and the workstation. The rapidly alternating green and amber link LED on an unmanaged switch indicates a duplex mismatch or a high error rate on the link. Since the workstation can obtain an IP address, Layer 2 connectivity exists, but a duplex mismatch (e.g., the switch is set to auto-negotiate while the workstation is manually set to full duplex, or vice versa) causes excessive collisions or frame check sequence (FCS) errors, leading to retransmissions and slow speeds. This is the most likely cause because the LED behavior directly points to a physical-layer or data-link-layer negotiation problem.

Answer

Faulty patch cable connecting the workstation to the wall jack

Answer

IP address conflict with another device on the network

Answer

The switch is overheating due to poor ventilation

Question 7

A user reports that they cannot access the company intranet website at http://intranet. The technician opens a browser on the workstation and types the IP address 192.168.10.5, which successfully loads the intranet page. The workstation is configured to obtain IP settings automatically via DHCP. Which of the following is the MOST likely cause of the issue?

Accepted Answer

The DHCP server is not providing a DNS server address. The user can access the intranet by IP address but not by hostname, which indicates a name resolution failure. Since the workstation uses DHCP, the most likely cause is that the DHCP server is not providing a DNS server address, so the browser cannot resolve 'intranet' to an IP. This is a classic symptom of missing or misconfigured DNS settings from DHCP.

Answer

The intranet server is down

Answer

The workstation has a corrupted hosts file

Answer

The workstation's browser cache is full

Question 8

A user reports that their smartphone charges intermittently. The technician observes that the USB-C cable fits very loosely into the charging port and often falls out. Which component is MOST likely causing this issue?

Accepted Answer

The charging port or connector is damaged or worn.. The USB-C cable fitting loosely and falling out of the charging port is a classic sign of physical wear or damage to the port or connector. Over time, the internal retention clips or solder joints inside the port can degrade, preventing a secure mechanical and electrical connection. This intermittent physical contact directly causes the intermittent charging behavior, not a software or battery issue.

Answer

The battery is no longer able to hold a charge.

Answer

The operating system has a bug affecting charging.

Answer

The firmware controlling the charging circuit is corrupted.

Question 9

A user reports that their smartphone's touchscreen is unresponsive in a small area near the bottom-left corner after dropping the device. The screen is not cracked, and the display still shows images correctly in that area. The technician has already performed a soft reset and verified that no screen protector is interfering. Which of the following is the most likely cause?

Accepted Answer

A. The digitizer layer is damaged. The digitizer layer is the component responsible for detecting touch input. When a smartphone is dropped, the digitizer can sustain localized damage—such as a cracked or delaminated sensor grid—even if the display (LCD/OLED) remains intact and shows images correctly. The unresponsive area in the bottom-left corner, combined with normal image display, points directly to a damaged digitizer rather than the LCD panel.

Answer

B. The LCD panel is cracked internally

Answer

C. The battery is swollen and pressing against the screen

Answer

D. The screen resolution settings are incorrect

Question 10

A user reports that they can browse the internet and receive emails but cannot send emails using their email client. The email client is configured to use the company's email server. The technician verifies that other users in the same office can send and receive emails without any issues. The workstation's software firewall is disabled. Which of the following is the MOST likely cause of the issue?

Accepted Answer

The email client's outgoing server settings are misconfigured.. Since the user can receive emails (POP3/IMAP) and browse the internet, network connectivity and DNS resolution are functional. The fact that other users can send emails confirms the SMTP service on the server is operational. The most likely cause is that the email client's outgoing server settings (SMTP server address, port, or authentication) are misconfigured, preventing the client from establishing an SMTP session to relay the outgoing message.

Answer

The email server's SMTP service is experiencing an outage.

Answer

The workstation's DNS resolver cannot resolve the email server's hostname.

Answer

The user's email account password has expired.

Question 11

A user reports that they cannot access the internet, but they can access internal network resources by IP address. The technician runs ipconfig and sees IP address 192.168.1.12, subnet mask 255.255.255.0, default gateway 192.168.1.1, DNS server 192.168.1.1. The user can ping 192.168.1.1 and 8.8.8.8 successfully. However, they cannot ping www.google.com. Which of the following is the MOST likely cause?

Accepted Answer

The DNS server is not resolving hostnames.. The user can ping the default gateway (192.168.1.1) and an external IP (8.8.8.8) successfully, which confirms that the network layer (IP routing) is working and the internet connection is functional. However, the inability to ping www.google.com by name while being able to ping by IP indicates that the DNS server (192.168.1.1) is failing to resolve the hostname to an IP address. Since the DNS server is the same as the default gateway, it is likely that the gateway device is not configured to perform DNS resolution or the DNS service is not running.

Answer

The default gateway is unreachable.

Answer

The subnet mask is incorrect.

Answer

The NIC is faulty.

Question 12

A user's Android smartphone exhibits a strange charging behavior. When the phone is powered off and connected to the wall charger, it charges normally and the battery percentage increases. However, when the phone is powered on and plugged into the same charger, the device shows the charging icon, but the battery percentage steadily decreases over time, eventually causing the phone to shut down. The user has already tried different charging cables and adapters, and has performed a factory reset. Which component is MOST likely faulty?

Accepted Answer

Battery. The battery is most likely faulty because it can hold a charge when the phone is off (minimal current draw) but fails under the higher load of the powered-on system. A degraded battery's internal resistance increases, causing voltage sag under load, which the PMIC interprets as a low charge state, leading to a net discharge despite the charger being connected.

Answer

Charging port / USB connector

Answer

Power management integrated circuit (PMIC)

Answer

Operating system battery calibration

Question 13

A graphic design company needs to render a complex 3D animation that will take approximately 4 hours to complete. The rendering software requires a powerful CPU and a large amount of RAM. The company's on-premises workstations are not powerful enough, and they do not want to purchase new hardware. Which cloud computing characteristic would BEST allow them to complete this task cost-effectively?

Accepted Answer

Elasticity. Elasticity allows the company to provision cloud-based virtual machines with the required CPU and RAM for the duration of the rendering task (4 hours) and then de-provision them immediately after, paying only for the compute time used. This avoids the capital expenditure of purchasing new hardware and is cost-effective because resources scale up on demand and scale down when no longer needed.

Answer

Metered service / measured service

Answer

Resource pooling

Answer

High availability

Question 14

A user reports that their laptop’s Wi-Fi connection is slow and drops frequently, but only when they are in the break room. Other laptops in the same area have no issues. The technician tests the signal strength in the break room and it is excellent. Which of the following is the most likely cause?

Accepted Answer

The laptop’s wireless adapter is malfunctioning. The correct answer is B because the issue is isolated to a single laptop in a specific location where signal strength is excellent and other devices work fine. This points to a hardware fault in the laptop's wireless adapter, such as a failing chipset, driver corruption, or antenna disconnection, rather than environmental interference or network congestion.

Answer

Interference from a microwave oven

Answer

The access point is overloaded with too many clients

Answer

The laptop is connected to the 5 GHz band which has shorter range

Question 15

A user reports that their smartphone will not power on. The technician connects the phone to a charger and sees a red LED indicator for a few seconds, then it goes off. After leaving it charging for an hour, the phone still will not turn on, and the technician notices the phone feels unusually warm near the battery area. Which of the following components is MOST likely faulty?

Accepted Answer

Battery. The red LED that briefly illuminates and then extinguishes, combined with the phone feeling unusually warm near the battery area after charging, strongly indicates a faulty battery. A degraded or internally shorted battery can accept a small charge (causing the brief red LED) but quickly heat up due to excessive internal resistance or a short circuit, preventing it from holding a charge or powering the device. The battery's inability to deliver sufficient voltage to the system after an hour of charging confirms it is the most likely failed component.

Answer

Charging port

Answer

Screen assembly

Answer

Power button