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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Operating Systems | 28% | - Mobile operating systems
|
| Topic 2: Security | 28% | - Network and application security
|
| Topic 3: Operational Procedures | 21% | - Safety and compliance
|
| Topic 4: Software Troubleshooting | 23% | - Application and security troubleshooting
|
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NEW QUESTION # 248
Recently, the number of users sharing smartphone passcodes has increased. The management team wants a technician to deploy a more secure screen lock method. Which of the following technologies should the technician use?
Answer: A
Explanation:
Facial recognition leverages biometric characteristics unique to each user, offering stronger security than shared passcodes or easily observed pattern locks. It ensures that only the enrolled individual can unlock the device, reducing the risk of unauthorized access from shared codes.
NEW QUESTION # 249
A technician is replacing a rack-mounted UPS. Which of the following should the technician consider?
Answer: D
Explanation:
The correct answer is B. Getting assistance to lift the hardware. A rack-mounted UPS can be very heavy because it contains one or more internal batteries. When replacing or installing heavy rack- mounted equipment, the technician must consider personal safety and proper lifting techniques before performing the work. The Sybex practice-test explanations state that a UPS, also called a battery backup, can range in size from a small unit to equipment as large as an entire server rack, and it contains batteries and fuses used to provide power protection during power problems. The same source also explains that technicians should bend at the knees, lift with the legs, observe weight limitations, and use a partner lift or cart when needed. Compressed air is related to cleaning, not replacing a UPS. Low-voltage regulations and fire suppression systems may be relevant to facility planning, but the immediate safety concern when replacing rack-mounted hardware is safe lifting and handling.
NEW QUESTION # 250
Which of the following operating systems is used to join a domain?
Answer: B
Explanation:
Domain join capability is a key Windows edition differentiator. In Quentin Docter's Windows editions comparison, Home explicitly "lacks support for... joining to a domain," while Pro "can join a Windows server domain." This applies across Windows 10/11 edition families: Home is positioned for consumers and does not include domain-join features, whereas Pro includes the business feature set.
The All-in-One guide states the same concept: "Windows Home systems cannot become part of a domain; to do that, you'll need something like Windows Pro." The Mike Meyers Lab Manual reinforces that Pro is the baseline edition for domain membership in business environments.
Given the answer choices, Windows 11 Pro is the correct selection for joining a domain.
NEW QUESTION # 251
A company wants to provide its employees with devices that align with the company's mission to support open-source projects. Which of the following should a technician recommend?
Answer: C
Explanation:
The correct answer is D. Smartphones with Android. Among the listed options, Android best aligns with supporting open-source projects. The Mike Meyers/Mark Soper material explains that Android is an open- source platform based on Linux, another open platform, and that device manufacturers can modify or customize Android for their hardware. The All-in-One Exam Guide states the same: Android is an open- source platform based on Linux, owned by Google, and manufacturers commonly customize it. macOS and iPadOS are Apple operating systems and are not generally treated as open-source platforms in the A+ exam context. Microsoft Windows is a proprietary desktop operating system. Linux desktops would be the strongest open-source answer if listed, but they are not one of the choices. Therefore, smartphones with Android are the best match among the available options.
NEW QUESTION # 252
A user recently installed an application that accesses a database from a local server. When launching the application, it does not populate any information. Which of the following command-line tools is the best to troubleshoot the issue?
Answer: A
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
The scenario involves an application that should retrieve data from a local database server but is failing to do so. This likely indicates a problem in communication between the application and the database server (such as a network issue, port misconfiguration, or service unavailability). The correct troubleshooting approach involves testing the network/service connectivity between the client and the database.
Let's examine the options:
* A. ipconfig:This command displays IP configuration details for Windows systems, such as IP address, subnet mask, and default gateway. While useful for diagnosing general networkissues, it does not test service connectivity or the availability of a specific application port/service.
* B. nslookup:Used to query DNS servers to resolve domain names to IP addresses. However, since the question references a local server (likely accessed via IP or static hostname), DNS is probably not involved. Also, it does not test application/service availability.
* C. netstat:Displays active TCP connections, listening ports, and routing tables. It helps determine whether the local system is listening for or maintaining any network connections, but it does not initiate a connection to test availability. It's diagnostic but not interactive for service testing.
* D. curl:This is the most appropriate tool for this scenario. curl is used to test connectivity to services over protocols like HTTP, HTTPS, FTP, and more. If the application retrieves data via a web interface or API (common in database-driven applications), curl can be used to test if the application can successfully reach and retrieve data from the server. It provides immediate, testable feedback on whether the server and service are available and responsive.
Example usage:
curlhttp://localhost:8080/api/data
This command would test whether a local server's application programming interface (API) is available and responding on port 8080.
CompTIA A+ 220-1102 Reference Points:
* Objective 2.4: Given a scenario, use appropriate tools to troubleshoot and support Windows OS issues.
* Objective 3.3: Use appropriate tools to troubleshoot and resolve issues.
* The CompTIA A+ Core 2 study guide references curl as a useful command-line utility for testing connectivity and troubleshooting application access to services.
NEW QUESTION # 253
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