The feature that would best assist in this situation is the Display Settings for Text Size and Bold Text. This option allows users to adjust the size of text across the entire system, making it easier to read without compromising the overall layout and aesthetic of the interface. Users can access this feature by navigating to Settings > Display & Brightness > Text Size, where they can use a slider to increase or decrease text size. Additionally, enabling Bold Text can further enhance readability, making text stand out more clearly against the background. On the other hand, Night Shift is primarily designed to reduce blue light exposure during evening hours, which can help with eye strain but does not directly address the issue of navigation difficulty due to text and icon size. AssistiveTouch is a feature that provides an on-screen touch interface for users who have difficulty using physical buttons, but it does not modify the size of text or icons. Guided Access is a tool that restricts the device to a single app and controls which features are available, which is useful for focus but does not aid in customizing the interface for accessibility. Thus, while all options present valuable features, the Display Settings for Text Size and Bold Text specifically target the user’s need for improved navigation through customization of text and icon size, making it the most appropriate choice in this context. Understanding the nuances of these accessibility features is crucial for providing effective support to users with varying needs.

This approach adheres to best practices in cybersecurity, which emphasize the importance of skepticism towards unsolicited requests for sensitive information. Clicking on the link and entering credentials can lead to unauthorized access to the employee’s account and potentially compromise the entire organization’s security. Forwarding the email to colleagues may spread the risk if they also fall victim to the phishing attempt. Ignoring the email without investigation does not address the potential threat and could leave the employee vulnerable if the email is indeed a legitimate request. Furthermore, organizations often implement security awareness training to educate employees about recognizing phishing attempts and other security threats. This training typically includes guidelines on how to handle suspicious communications, emphasizing the need for verification through official channels. By taking the appropriate action of verifying the email, the employee not only protects their own information but also contributes to the overall security posture of the organization.

If the power supply is functioning correctly and the battery health is satisfactory, the technician can then focus on the logic board. However, if the power supply or battery shows signs of wear or malfunction, it may be the root cause of the shutdowns, thus avoiding unnecessary replacement of the logic board. Replacing the logic board solely based on the error code without further investigation can lead to unnecessary costs and time. Reinstalling the operating system is also not advisable at this stage, as it does not address potential hardware issues and may overlook critical diagnostics already provided by the hardware test. Lastly, while checking for external peripherals is a valid consideration, it is less direct than assessing the power supply and battery health first. In summary, a thorough examination of the power supply and battery health is essential to confirm whether the logic board is indeed the source of the problem or if another component is at fault. This methodical approach ensures that the technician addresses the most likely causes of the issue before proceeding with more invasive and costly repairs.

Paraphrasing the concerns allows the project manager to clarify the issues raised, ensuring that they are accurately understood and acknowledged. This technique not only shows respect for the team member’s input but also encourages further discussion, allowing other team members to contribute their thoughts and solutions. On the other hand, dismissing the concerns to keep the meeting on schedule can lead to resentment and disengagement among team members, as it undermines their input and can create a culture where team members feel their opinions are not valued. Providing a detailed report without engaging the team fails to address the emotional aspect of the concerns and can come off as impersonal. Lastly, focusing solely on the positive aspects of the project may temporarily uplift spirits but does not address the underlying issues, which could lead to greater problems down the line if the concerns are not resolved. In summary, employing active listening and paraphrasing not only addresses the immediate concerns but also promotes a culture of open communication, collaboration, and problem-solving within the team, which is vital for the success of the project.

In this scenario, the file size of 1.5 GB is well within the capabilities of AirDrop, which can handle files up to 5 GB in size. Therefore, the size of the file is not a limiting factor in this case. Additionally, while the recipient’s device settings can affect the ability to receive files, if the device is set to receive from “Contacts Only” and the sender is not in the recipient’s contacts, this could indeed prevent the transfer. However, the question specifically asks for the most likely factor contributing to the failure, and the distance between the devices is a more fundamental issue that directly impacts the connection. Lastly, while running an outdated version of macOS can lead to compatibility issues, AirDrop is designed to work across various versions of macOS, provided that both devices support the feature. Therefore, the most plausible explanation for the repeated failures in transferring the file is that the distance between the devices exceeds the effective range of Bluetooth and Wi-Fi Direct connections, which is critical for establishing a successful AirDrop session.

1. **Devices with 8GB of RAM**: These devices already meet the requirement. Therefore, they do not need any upgrades. There are 30 such devices. 2. **Devices with 4GB of RAM**: These devices also meet the minimum requirement. Thus, they do not require any upgrades. There are 15 such devices. 3. **Devices with 2GB of RAM**: These devices do not meet the minimum requirement and will need an upgrade. There are 5 devices with 2GB of RAM. Now, we can summarize the findings: – Devices with 8GB: 30 (no upgrade needed) – Devices with 4GB: 15 (no upgrade needed) – Devices with 2GB: 5 (upgrade needed) Since only the devices with 2GB of RAM need an upgrade, the total number of devices requiring an upgrade is 5. In conclusion, the company will need to upgrade 5 devices to ensure that all devices meet the minimum system requirements for macOS Monterey. This scenario illustrates the importance of understanding system requirements and the implications of hardware specifications on software compatibility, which is crucial for effective IT management and planning.

Creating a Time Machine backup is a critical step because it allows the technician to restore the system to its current state if any further actions lead to data loss or additional issues. Time Machine is a built-in backup feature in macOS that automatically backs up the entire system, including applications, user data, and system files. This precaution is vital, especially when dealing with potential software conflicts or system instability. Uninstalling all third-party applications immediately may seem like a proactive approach, but it could lead to unnecessary data loss and does not guarantee that the underlying issue will be resolved. Additionally, running Disk Utility to repair disk permissions and verify disk integrity is a good practice, but it should not replace the need for a backup. Disk Utility can help identify and fix certain issues, but it does not safeguard against data loss. Reinstalling the operating system directly from the recovery partition without checking for backups is risky. This action could result in the loss of important data if the technician has not ensured that a backup exists. Therefore, the most prudent course of action is to create a Time Machine backup first, ensuring that the technician has a safety net before proceeding with any further troubleshooting or system modifications. This approach aligns with best practices in IT support, emphasizing the importance of data integrity and recovery options in troubleshooting scenarios.

Using third-party applications for file sharing and communication may seem convenient, but it can lead to security vulnerabilities and a lack of control over data management. Without a centralized management system, the business risks inconsistent user experiences and potential data breaches. Relying solely on iCloud for file storage and sharing, while convenient for personal use, may not provide the level of control and security required in a business setting. iCloud lacks the comprehensive management features that Apple Business Manager offers, such as device supervision and the ability to enforce security policies. Setting up a local server introduces additional complexity and maintenance challenges. Manual updates and configurations can lead to inconsistencies and increased downtime, which can hinder productivity. Moreover, this approach does not leverage the cloud capabilities that Apple devices are designed to utilize, such as seamless updates and remote management. In conclusion, Apple Business Manager provides a robust framework for integrating Apple devices in a business environment, ensuring that all devices can work together efficiently while maintaining security and ease of use. This approach not only enhances collaboration among employees but also simplifies the management of devices and applications, making it the optimal choice for the small business in question.

In urban areas, for instance, tall buildings can obstruct GPS signals, leading to inaccurate or delayed location data. This phenomenon, known as “urban canyon effect,” occurs when the line of sight to satellites is obstructed, causing the GPS receiver to struggle in determining an accurate position. If the user is in such an environment, it is likely that the app is unable to provide accurate location data despite having the necessary permissions. While the other options present plausible scenarios, they do not directly address the core issue of location accuracy. An outdated app may lead to performance issues, but if permissions are correctly set, the app should still function to some extent. Similarly, not restarting the device or having a low battery could affect overall performance but are less likely to be the primary cause of location inaccuracies. Therefore, understanding the environmental factors that affect GPS signal reception is crucial for diagnosing location service issues effectively. This highlights the importance of considering the context in which location services are being used, as well as the interplay between technology and physical surroundings.

Option b suggests checking the app’s internal settings, which may be misleading. While some apps do have their own notification settings, these settings typically do not override the system-level preferences. If notifications are disabled at the system level, the app’s internal settings will not be effective. Option c, which involves restarting the device, is a common troubleshooting step but does not address the root cause of notification issues. Restarting may resolve temporary glitches but does not ensure that the notification settings are correctly configured. Option d, updating the app, is also a valid action but does not directly address the notification settings. An outdated app may indeed have bugs that affect notifications, but if the system settings are not configured correctly, updating the app alone will not resolve the issue. Thus, the most comprehensive approach to ensuring notifications are functioning correctly involves checking and adjusting the settings in the Notifications section of the Settings app, as this provides the necessary control over how and when notifications are received from each app.

If interference is present or the firmware is outdated, these factors can significantly impact the device’s ability to maintain a stable connection. Therefore, addressing these issues first can often resolve the connectivity problem without the need for more drastic measures. On the other hand, immediately replacing the Wi-Fi router may not be necessary and could lead to unnecessary expenses if the issue is related to interference or firmware. Disabling all security settings on the router is not advisable, as it exposes the network to potential security threats and does not address the underlying connectivity issue. Lastly, suggesting a switch to cellular data does not solve the problem at hand and may lead to increased data usage costs for the customer. In summary, a thorough examination of potential interference and ensuring the router’s firmware is current are critical steps in diagnosing and resolving Wi-Fi connectivity issues effectively. This approach not only adheres to best practices in troubleshooting but also empowers the customer with knowledge about their network environment.

1. **Devices with 8GB of RAM and a compatible processor**: There are 30 devices in this category. Since they exceed the minimum RAM requirement and have a compatible processor, all 30 devices can successfully update. 2. **Devices with 4GB of RAM but an incompatible processor**: There are 15 devices in this category. Although they meet the RAM requirement, they do not have a compatible processor. Therefore, none of these devices can update to the new macOS version. 3. **Devices with 2GB of RAM and a compatible processor**: There are 5 devices in this category. These devices do have a compatible processor; however, they do not meet the minimum RAM requirement of 4GB. Thus, they also cannot update to the new macOS version. Now, we sum the number of devices that can successfully update: – From the first group: 30 devices – From the second group: 0 devices – From the third group: 0 devices Adding these together gives us a total of \(30 + 0 + 0 = 30\) devices that can successfully update to the new macOS version. This scenario emphasizes the importance of understanding both hardware specifications and software requirements when planning updates. It also highlights the need for IT departments to assess device compatibility thoroughly before initiating software updates, as failing to do so could lead to significant disruptions in workflow and productivity.

Turning off all notifications for every application (option b) may reduce battery drain but could lead to missed important alerts, which is not ideal for user experience. Setting the device to Low Power Mode at all times (option c) can help conserve battery but may limit the functionality of certain apps and features, leading to a suboptimal user experience. Uninstalling infrequently used applications (option d) might free up some resources, but it does not directly address the battery drain caused by Background App Refresh. In summary, the most effective strategy is to manage Background App Refresh settings intelligently, allowing essential applications to remain functional while minimizing the impact on battery life from less critical apps. This nuanced understanding of iOS features and their implications on device performance is essential for effective device support.

Updating all devices simultaneously during business hours can lead to significant downtime, as users may be interrupted during critical tasks. This could result in frustration and decreased productivity, which is counterproductive to the goal of maintaining operational efficiency. Allowing users to initiate updates at their convenience without guidance can lead to inconsistent update statuses across the fleet, creating potential security vulnerabilities and compatibility issues. Lastly, performing updates on a random selection of devices may not provide a comprehensive understanding of compatibility issues, as it does not ensure that all devices are tested under the same conditions. In summary, the best strategy involves careful planning and management to ensure that updates are applied efficiently while minimizing disruption to users. This includes utilizing tools like Apple Business Manager to facilitate the process and scheduling updates during times when they will have the least impact on productivity.

AssistiveTouch, while also an important accessibility feature, primarily aids users who have difficulty using the touchscreen. It provides a virtual button that can perform various functions, but it does not enhance navigation through auditory feedback. Guided Access restricts the device to a single app and allows users to control which features are available, which can be useful in certain contexts but does not directly address navigation challenges. Switch Control allows users to interact with their devices using switches, which is beneficial for those with limited mobility, but it does not provide the same level of navigation assistance as VoiceOver. In summary, for a user facing navigation difficulties, VoiceOver stands out as the most effective tool, as it transforms the way users interact with their devices by providing comprehensive auditory feedback, thereby enhancing their overall experience and usability. Understanding the nuances of these accessibility features is crucial for providing effective support to users with diverse needs.

In contrast, the other options present misconceptions about the functionalities of Continuity. While a centralized location for files is important, it is not a direct feature of Continuity; rather, it relates more to iCloud and file management systems. Automatic software updates are managed through the system settings and are not a function of Continuity. Lastly, restricting access to shared resources pertains to security protocols and user permissions, which are separate from the Continuity features that focus on enhancing workflow and device integration. Understanding the nuances of how Continuity operates is crucial for leveraging its full potential in a collaborative environment. By utilizing these features, teams can significantly improve their workflow, making it easier to manage tasks across different devices, thereby fostering a more productive work atmosphere.

If the problem persists after the factory reset, it strongly indicates a hardware issue, possibly related to the Wi-Fi antenna or other internal components. Conversely, if the disconnection issue resolves, it suggests that the original software configuration or settings were at fault. While checking for software updates (option b) is a good practice, it does not address the possibility of deeper software corruption that a factory reset would resolve. Disabling Wi-Fi Assist (option c) may help in some cases, but it does not provide a comprehensive diagnosis of the underlying issue. Replacing the Wi-Fi router (option d) is also not a viable first step, as it does not isolate the problem to the device itself and could lead to unnecessary expenses if the issue lies within the iPhone. Thus, the most effective approach to diagnose the issue is to perform a factory reset and monitor the device’s behavior without restoring from a backup. This method allows for a clear assessment of whether the problem is due to hardware failure or a software-related issue.

Firstly, if the new device cannot communicate effectively with the existing devices due to protocol differences, it may introduce latency into the network. This is because the existing devices may need to wait for the new device to respond or may not be able to send commands to it at all. This situation can create bottlenecks in data transmission, leading to a decrease in overall network efficiency. Moreover, the inability of devices to communicate can result in a fragmented network where some devices are unable to share data or respond to commands from others. This fragmentation can hinder the smart home’s ability to optimize energy consumption, as devices may not be able to coordinate their operations effectively. In contrast, seamless integration (as suggested in option b) is unlikely unless the new device is designed to support multiple protocols or is compatible with a common standard used by the existing devices. The idea that the new device would operate independently (option c) overlooks the interconnected nature of smart home systems, where devices are expected to work together to enhance functionality. Lastly, the notion that the new device would automatically convert its protocol (option d) is misleading, as protocol conversion typically requires additional hardware or software solutions, which are not inherent to most devices. Thus, the introduction of a device with a different communication protocol is likely to lead to increased latency and reduced overall network efficiency due to the challenges of protocol incompatibility. This highlights the importance of ensuring that all devices within a smart home ecosystem are compatible with the same communication standards to maintain optimal performance and interoperability.

Including the frequency of occurrence helps in understanding whether the problem is sporadic or consistent, which can influence the urgency of the response. Specific actions that lead to the freezing can point to particular software or hardware interactions that may be at fault. For instance, if the freezing occurs only when using a specific application, it may indicate a compatibility issue or a bug within that app. While customer personal information, warranty status, and a list of installed applications can be relevant in certain contexts, they do not directly aid in diagnosing the technical problem at hand. Personal information is necessary for account verification but should not overshadow the technical details of the issue. Similarly, while knowing the warranty status can be important for service eligibility, it does not contribute to resolving the technical malfunction. A comprehensive understanding of the issue itself is paramount for effective support, making it the most critical component of the support ticket.

However, the technician also needs to consider the kernel panics related to the graphics driver. Kernel panics can cause the system to shut down unexpectedly, and if the graphics driver is outdated or corrupted, it could exacerbate the shutdown issue. Updating the macOS to the latest version may include important driver updates that could resolve compatibility issues with the hardware. Reinstalling the graphics driver could also be a viable option, but it is often more effective to ensure that the entire operating system is up to date, as this can address multiple underlying issues at once. Resetting the System Management Controller (SMC) is a common troubleshooting step for power-related issues, but it may not directly address the kernel panic logs that indicate a deeper problem with the graphics driver. In summary, while all options have merit, the technician should prioritize replacing the battery first to ensure stable power delivery, as this is a fundamental requirement for the device’s operation. Following that, updating the macOS would be a prudent step to address any software-related issues that could be contributing to the kernel panics. This layered approach ensures that both hardware and software aspects are addressed systematically, leading to a more comprehensive resolution of the problem.

In this scenario, the most plausible reason for the failure is related to the AirDrop settings. If the AirDrop is set to allow only contacts to receive files, and the colleague’s MacBook is not in the sender’s contacts, the transfer will not initiate. This setting is a common oversight in corporate environments where users may not have each other saved as contacts. While being on the same iCloud account can facilitate easier sharing, it is not a strict requirement for AirDrop to function. Additionally, while an outdated version of macOS could potentially cause issues, it is less likely to be the primary reason for the failure in this case, especially if the devices are relatively modern. Thus, understanding the nuances of AirDrop settings and their implications in a corporate setting is crucial for troubleshooting file transfer issues effectively. This highlights the importance of not only knowing how AirDrop works but also being aware of the specific configurations that can impact its functionality.

\[ \text{Maximum bandwidth per device} = \frac{\text{Total bandwidth}}{\text{Number of devices}} = \frac{100 \text{ Mbps}}{10} = 10 \text{ Mbps} \] This calculation assumes that the bandwidth is evenly distributed among all devices, which is a common scenario in network management. Now, regarding the potential cause of connectivity issues, if the bandwidth is fully utilized (i.e., all 10 devices are using their maximum theoretical bandwidth of 10 Mbps), this can lead to bandwidth saturation. Bandwidth saturation occurs when the demand for bandwidth exceeds the available supply, resulting in slow speeds, dropped connections, and overall poor performance. In contrast, the other options present plausible but incorrect scenarios. For instance, if each device could utilize only 5 Mbps, that would imply a total bandwidth of only 50 Mbps, which contradicts the given total of 100 Mbps. Similarly, while interference from other networks and outdated hardware can contribute to connectivity issues, they do not directly explain the symptoms observed if the network is already saturated. Incorrect network settings could also lead to issues, but they would not account for the observed bandwidth distribution during peak usage. Thus, understanding the relationship between bandwidth distribution and connectivity issues is crucial for effective troubleshooting in network management.

However, the “Ask to Buy” feature specifically restricts the ability of the children to make purchases independently. Instead, whenever they attempt to purchase an app, game, or any other content that requires payment, a request is sent to the parent for approval. This ensures that the parent can review and either approve or deny the purchase based on their discretion. This setup is particularly beneficial for managing children’s access to potentially inappropriate content or for controlling spending. It is important to note that the “Ask to Buy” feature applies to purchases made through the App Store, iTunes Store, and Apple Books, but does not affect their ability to access shared subscriptions like Apple Music. In contrast, the other options present misconceptions about the functionality of Family Sharing and the “Ask to Buy” feature. For instance, stating that children can make purchases freely contradicts the purpose of the parental control. Similarly, the idea that children cannot request purchases at all is incorrect, as the feature is designed to facilitate requests for parental approval. Lastly, the notion that children over 13 can make unrestricted purchases is misleading, as the “Ask to Buy” feature can still be applied regardless of age, depending on the parent’s settings. Thus, understanding the nuances of Family Sharing and the implications of enabling “Ask to Buy” is essential for parents who wish to maintain control over their children’s purchasing behavior while allowing them access to shared content.

– North: $150,000 – South: $200,000 – West: $250,000 The total sales can be calculated as: \[ \text{Total Sales} = \text{North} + \text{South} + \text{West} = 150,000 + 200,000 + 250,000 = 600,000 \] Next, to find the percentage contribution of the South region, we use the formula for percentage: \[ \text{Percentage Contribution} = \left( \frac{\text{Sales of South}}{\text{Total Sales}} \right) \times 100 \] Substituting the values: \[ \text{Percentage Contribution of South} = \left( \frac{200,000}{600,000} \right) \times 100 = \frac{200}{600} \times 100 = \frac{1}{3} \times 100 \approx 33.33\% \] Rounding this to the nearest whole number gives us approximately 33%. In the context of Keynote, to effectively represent this data, the marketing team should create a pie chart that visually illustrates the proportions of sales from each region. This chart will allow viewers to quickly grasp the relative contributions of each region to the overall sales figure. In addition to the pie chart, it would be beneficial to include data labels that show the exact percentages for each region, enhancing clarity and understanding. This approach not only makes the data visually appealing but also ensures that the audience can easily interpret the information presented. Thus, the correct answer regarding the percentage contribution of the South region is approximately 30%, which aligns with the calculated value when rounded appropriately.

User feedback is invaluable; it provides insights into which articles are helpful and which may be confusing or outdated. By analyzing this feedback, the team can prioritize updates and modifications that will have the most significant impact on user satisfaction. Additionally, incorporating analytics helps identify trends in user behavior, allowing the team to focus on high-traffic articles that may require immediate attention. In contrast, simply increasing the number of articles without a review process can lead to a dilution of quality. New content may not align with user needs or may repeat existing information, resulting in confusion rather than clarity. Ignoring existing articles can also create a knowledge gap, as users may still rely on outdated information if it is not regularly reviewed and updated. Limiting contributions to a select few experienced team members may maintain consistency in writing style, but it can stifle diverse perspectives and insights that other team members might offer. A collaborative approach that encourages contributions from various team members, while still maintaining a structured review process, fosters a more comprehensive and user-focused knowledge base. Ultimately, a well-maintained knowledge base that incorporates regular reviews, user feedback, and analytics will lead to a more effective support resource, enhancing user experience and satisfaction.

The total budget is $5,000. The team has decided to reserve 20% of this budget for future learning resources. We can calculate this reserved amount as follows: \[ \text{Reserved Amount} = 0.20 \times 5000 = 1000 \] This means that the remaining budget available for online courses is: \[ \text{Available Budget} = 5000 – 1000 = 4000 \] Next, we need to determine how many online courses they can purchase with the available budget. Each online course costs $200, so we can find the number of courses by dividing the available budget by the cost per course: \[ \text{Number of Courses} = \frac{\text{Available Budget}}{\text{Cost per Course}} = \frac{4000}{200} = 20 \] Thus, the team can purchase 20 online courses while still adhering to their budget constraints. This scenario emphasizes the importance of budgeting and resource allocation in a corporate environment, particularly in the context of continued learning and development. It illustrates how teams can strategically plan their expenditures to maximize their training opportunities while ensuring they have resources available for future needs. Understanding these financial principles is crucial for effective management and support of ongoing education initiatives within organizations.

In contrast, the Mac Mini with the M1 chip, while powerful and efficient, has 8 CPU cores and 8 GPU cores. The M1 architecture is optimized for performance per watt and provides excellent single-threaded performance, but it may not match the raw multi-core capabilities of the Mac Pro in scenarios where extensive parallel processing is required. The MacBook Pro with an Intel Core i7 processor, while capable, does not offer the same level of performance as the Mac Pro, especially when considering the potential for memory bandwidth and thermal management in sustained workloads. Moreover, the Mac Pro’s architecture allows for greater memory bandwidth, which is crucial for handling large files typical in graphic design and video editing. The ability to configure the Mac Pro with more RAM also means that the designer can work with larger projects without experiencing slowdowns. Therefore, for a graphic designer focused on high-resolution images and video editing, the Mac Pro with an Intel Xeon processor would provide the most significant performance improvement, making it the optimal choice for their needs.

Handoff is a feature that allows users to start a task on one device and continue it on another without losing any progress. For example, a user can begin composing an email on their iPhone and finish it on their Mac. This feature is crucial for maintaining workflow efficiency, especially for users who frequently switch between devices. Continuity encompasses a range of features that enhance the user experience across devices, such as making and receiving calls on any device linked to the same Apple ID, and using Universal Clipboard to copy and paste content between devices. This interconnectedness is vital for users who rely on multiple devices for their daily tasks. In contrast, the other options do not provide the same level of synchronization and productivity enhancement. AirDrop, iMessage, and FaceTime are primarily communication and file-sharing tools, which, while useful, do not facilitate the same level of workflow integration. Similarly, Apple Music, Apple News, and Apple TV+ focus on entertainment rather than productivity, and Safari, Mail, and Calendar, while important applications, do not inherently provide the same seamless integration features as iCloud Drive, Handoff, and Continuity. Thus, understanding the specific functionalities and benefits of these services is crucial for optimizing the Apple ecosystem for productivity.

On the other hand, creating a bootable USB installer is a viable alternative that does not depend on the MacBook’s network capabilities. This method involves downloading the macOS installer on a different, functional Mac and transferring it to a USB drive. Once the USB drive is prepared, the technician can boot the malfunctioning MacBook from the USB drive and proceed with the installation. This approach is particularly useful in situations where the internal hardware is compromised, as it allows for a complete reinstallation of the operating system without the need for internet access. Attempting to repair the Wi-Fi hardware first may not be the most efficient course of action, especially if the technician is under time constraints or if the hardware issue is complex. Additionally, reinstalling macOS from a Time Machine backup would not resolve the underlying software issues if the backup itself is corrupted or if the system is unable to boot properly. In summary, given the constraints of the situation, creating a bootable USB installer is the most effective method for reinstalling macOS on the affected MacBook, ensuring that the technician can bypass the need for an internet connection and address the software issues directly.

\[ \text{Percentage} = \left( \frac{\text{Number of Whitelisted IPs}}{\text{Total IPs}} \right) \times 100 \] In this case, the number of whitelisted IPs is 10, and the total number of IP addresses in the subnet is 256. Plugging in these values, we get: \[ \text{Percentage} = \left( \frac{10}{256} \right) \times 100 \approx 3.9\% \] This calculation shows that whitelisting 10 IP addresses represents approximately 3.9% of the total available IP addresses. To effectively configure the firewall, it should be set to allow traffic only from the whitelisted IP addresses while blocking all other traffic on port 8080. This approach minimizes the risk of unauthorized access by ensuring that only known and trusted IP addresses can communicate through that port. The firewall rules should be explicitly defined to deny all other incoming traffic on port 8080, thereby enforcing a strict access control policy. In contrast, the other options suggest incorrect percentages or configurations that would either allow too much traffic or fail to adequately restrict access, which could lead to potential security vulnerabilities. Proper firewall configuration is crucial in maintaining network security, especially when dealing with sensitive applications that could be targeted by malicious actors.