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NEW QUESTION # 116
Which of the following describes the function of an injector?
Answer: A
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
A PoE injector is used to add power to an Ethernet cable, enabling the cable to deliver both power and data.
This is crucial when connecting to PoE-enabled devices like IP cameras or wireless access points that are far from power outlets.
#Reference: "CompTIA A+ Complete Practice Tests" by Jeff T. Parker - Chapter 10, Question 77, page 585.
NEW QUESTION # 117
The display in a conference room has a ghost image that does not match the presentation Which of the following would test resolve the issue?
Answer: A
Explanation:
B:Correct the keystone:
A keystone correction adjusts the image shape when a projector is angled either up or down. When a projector is not positioned directly perpendicular to the screen, the image becomes distorted or offset. Correcting the keystone will resolve alignment issues, ensuring that the presentation matches the display.
Incorrect Options:
A:Adjust the color settings: This is used for improving color balance and has no impact on ghosting or mismatched images.
C:Increase the brightness levels: Brightness changes the visibility of the image but does not address ghosting or alignment.
D:Replace the monitor: Replacing the monitor is unnecessary unless there is hardware failure, which is not indicated here.
Key Takeaway: Keystone correction is essential to resolve alignment and distortion issues in projected images.
Reference: CompTIA A+ Core 1 Exam Objectives (220-1201), Domain 3.4 - Display troubleshooting.
NEW QUESTION # 118
Several storms cause mission-critical servers to go offline unexpectedly A server also goes offline suddenly due to haroNvare failure Upon assessment the company purchases new UPSs to condition power and allow the OSs to shut down gracefully in the event of a power failure However, the UPSs are delayed due to supply chain issues Which of the following can balance a cost-effective solution with uptime requirements?
Answer: B
Explanation:
C: Installing redundant PSUs (Power Supply Units):
Redundant PSUs provide fault tolerance by ensuring that if one power supply fails, another will take over seamlessly.
This is a cost-effective way to increase uptime while waiting for the UPSs to arrive.
Incorrect Options:
A: Purchasing backup generators: Generators are costly and are typically used for long-term outages, not as an immediate or cost-effective solution.
B: Increasing input voltage: This is not a practical solution to hardware failures or power issues.
D: Activating a hot site: A hot site is an expensive, fully operational backup facility that would not be a cost- effective solution for this scenario.
Key Takeaway: Installing redundant PSUs is a cost-effective way to balance uptime requirements in case of power or hardware failure.
Reference: CompTIA A+ Core 1 Exam Objectives (220-1201), Domain 5.3 - Power-related troubleshooting.
NEW QUESTION # 119
A user brings a laptop to work every morning, correctly seats it in the docking station and then opens the laptop to begin work with no issues After the user left the laptop at home during a two-week vacation the laptop is no longer working. Upon returning to the office, the user reports that the keyboard and display are no longer working Which of the following should the technician ask the user to do first?
Answer: A
Explanation:
Reasoning: Many docking stations provide power and functionality only when the laptop is properly powered on. If the laptop was powered off (e.g., during the vacation), docking it will not automatically turn it on. The technician should first ensure the laptop is powered on by pressing the power button.
This is a common troubleshooting step when laptops in docking stations appear non-functional.
Relevance to CompTIA A+ Core 1: This falls under Objective 5.2, which covers diagnosing and resolving common laptop and mobile device issues.
Why the Other Options Are Incorrect:
A:Ensure the docking station is plugged in:
While ensuring power to the docking station is important, the scenario specifies that the issue occurred after a vacation. The likelihood of the docking station losing power coincidentally during the vacation is low.
Verifying the laptop's power state should be the first step.
C:Plug the laptop in and let it charge overnight:
There is no indication the laptop's battery is drained. While charging could resolve a dead battery, the user is more likely experiencing an issue where the laptop is powered off but docked, so charging overnight is not the best first step.
D:Connect the laptop directly to the network:
A network connection will not resolve the primary issue of the keyboard and display not working. Addressing the laptop's power state is a higher priority.
Practical Example:
If a user returns from a vacation and places a powered-off laptop into a docking station, it may not automatically power on. Pressing the power button ensures the laptop is operational and communicating with the docking station.
CompTIA A+ Exam Objective Alignment:
Objective 5.2: Troubleshooting common laptop issues, including power, display, and peripheral connectivity.
NEW QUESTION # 120
Which of the following services is used to allocate IP addresses in an enterprise-wide environment?
Answer: A
Explanation:
Dynamic Host Configuration Protocol (DHCP) is a network service used to automatically assign IP addresses and other network configuration details (such as subnet masks and default gateways) to devices on an enterprise-wide network.
Why Not A (DNS): DNS resolves domain names to IP addresses but does not allocate IP addresses.
Why Not B (Syslog): Syslog is used for logging system events, not IP address management.
Why Not C (Telnet): Telnet is a protocol for remote access, not for IP allocation.
CompTIA A+ Exam Reference: Core 1 (220-1201), Section 2.6, DHCP concepts.
NEW QUESTION # 121
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