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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Security | 28% | - Threats and mitigation
|
| Topic 2: Operating Systems | 28% | - Windows installation, configuration, and management
|
| Topic 3: Operational Procedures | 21% | - Communication and professionalism
|
| Topic 4: Software Troubleshooting | 23% | - Application and security troubleshooting
|
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NEW QUESTION # 452
A utility failure causes a workstation to immediately shut down. Which of the following would help prevent this from reoccurring?
Answer: D
Explanation:
A "utility failure" implies a power interruption (brownout/blackout). The device that prevents an immediate shutdown during an outage is a UPS . Quentin Docter explains that a UPS stores energy in batteries and "if the power fails, the batteries can power the computer for a period of time so that the administrator can then safely power it down." He further notes UPS devices also protect against "power sags and even power outages" and may work with operating systems to shut down safely and automatically.
Mike Meyers' Lab Manual echoes the same: a UPS "continues to supply AC power to your computer during both brownouts and blackouts via a battery that is charged from the AC current." A surge suppressor is mainly for voltage spikes, not sustained backup power. A redundant PSU helps only if one PSU fails inside the system, and Docter explicitly states it "can't keep the system up and running if there is a power outage." Therefore, the best answer is B .
NEW QUESTION # 453
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 network issues, 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 # 454
A technician is 3-D printing high-strength, carbon fiber-based filament parts for a customer order.
Which of the following is the most important for the technician to use?
Answer: A
Explanation:
An air filter mask is most important because 3-D printing carbon fiber-based filaments can release fine particles and fumes that are hazardous if inhaled.
NEW QUESTION # 455
A user is attempting to run a high-end graphics application on a computer with integrated video, but the application fails to start, reporting that the system does not meet the minimum video RAM requirements. The computer has 16 GB of system RAM installed. Which of the following should the technician adjust to resolve this issue?
Answer: C
Explanation:
With integrated graphics, "VRAM" is often not dedicated memory on a discrete card-graphics may instead borrow system RAM . Quentin Docter explains this directly: if the video card is built into the motherboard, it
"likely won't have its own memory but will share system memory," meaning the total system RAM is split between the OS and video usage. Docter then answers the key "where do I change this?" question: " Shared memory is configured in the system BIOS/UEFI ," and some BIOS/UEFI setups allow you to set aside a specific amount (example given: 512 MB) for video memory.
That is exactly why the machine can have plenty of DRAM yet fail a VRAM check: the BIOS/UEFI allocation for integrated graphics may be set too low. Adjusting BIOS/UEFI settings to reserve more memory for the integrated GPU is the most direct way to attempt meeting a VRAM requirement (when supported).
Device Manager and System Configuration won't change reserved video memory allocation, and "Virtual RAM" (paging) is unrelated to VRAM. Therefore, BIOS options is correct.
NEW QUESTION # 456
An administrator requires information about a server to identify the product owner and whether it has any business-critical services. Which of the following can the administrator refer to in order to find this information?
Answer: C
Explanation:
A CMDB (Configuration Management Database) contains details about IT assets, including product ownership and business-critical service status.
NEW QUESTION # 457
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