Pass the CompTIA A+ 220-1202 Questions and answers with ExamsMirror

A VPN creates a secure tunnel from the user’s home network into the corporate network, providing the necessary routing and access controls for the laptop to reach internal file servers. Without a VPN, the device remains outside the corporate LAN and cannot directly reach protected resources.

A VPN creates a secure tunnel from the user’s home network into the corporate network, providing the necessary routing and access controls for the laptop to reach internal file servers. Without a VPN, the device remains outside the corporate LAN and cannot directly reach protected resources.

Comprehensive and Detailed Explanation From Exact Extract:

In the context of artificial intelligence, "hallucinations" refer to instances where an AI system generates information that is plausible-sounding but factually incorrect or entirely fabricated. This is a known limitation of large language models, including generative AI tools.

A. Data privacy refers to the protection of personal or sensitive data, not content accuracy.

C. Appropriate use relates to ethical and policy-based concerns, not factual correctness.

D. Plagiarism involves presenting someone else's work as your own — this situation is about accuracy, not ownership.

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.

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Comprehensive and Detailed Explanation From Exact Extract:

Persistent pop-ups urging antivirus updates are likelyscareware or adware. The correct approach is toverify existing antivirus settings, run a trusted security scan, and avoid interacting with unknown pop-ups.

FromQuentin Docter – CompTIA A+ Complete Study Guide:

“Users should verify antivirus status using trusted tools before responding to alerts. Fake updates are common vectors for malware.”

Comprehensive and Detailed Explanation From Exact Extract:

A Zero-day vulnerability refers to a security flaw in software or hardware that is unknown to the vendor or has not yet been patched. If this vulnerability is exploited before the vendor has issued a fix or patch, it becomes a Zero-day exploit. These attacks are highly dangerous because they take advantage of the absence of defenses due to the lack of awareness or mitigation options.

A. Spoofing is a form of impersonation, not necessarily tied to unpatched vulnerabilities.

B. Brute-force attacks rely on repeatedly guessing credentials and are not related to software flaws.

C. DoS (Denial of Service) attacks are meant to overwhelm systems and don't necessarily exploit unknown vulnerabilities.

Comprehensive and Detailed Explanation From Exact Extract:

Remote wipe is the best option to prevent unauthorized access to data when a mobile device is lost or stolen—especially if the user is unaware of the loss. It allows administrators or mobile device management (MDM) systems to remotely erase all data on the device, rendering it unusable for unauthorized users.

A. Encryption protects the data, but if the device remains powered and logged in, it may still be accessible.

C. Geofencing can restrict features based on location but does not erase data.

D. Facial recognition helps secure access but can be bypassed in some cases or fail in practical situations.

Comprehensive and Detailed Explanation From Exact Extract:

Authenticator apps, such as Google Authenticator or Microsoft Authenticator, can be configured to sendpush notificationsto users for approval when logging in. This is a form of multi-factor authentication.

FromAll-in-One Exam Guide:

“Push-based two-factor authentication uses an authenticator app to send a notification to a mobile device. The user must approve the login attempt in real time, ensuring the request is valid.”

Comprehensive and Detailed Explanation From Exact Extract:

A synthetic full backup combines the last full backup with subsequent incremental backups to create a new full backup without re-reading data from the source system. This method significantly reduces the backup window and network impact. It is especially useful when traditional full backups are too time-consuming.

A. Changing the backup window only shifts timing, not duration.

B. Incremental weekly backups would lack a proper full recovery point and aren't ideal alone.

C. Storage space isn't the bottleneck in backup speed—it’s read/write operations and network load.

Comprehensive and Detailed Explanation From Exact Extract:

Older tablets may not support newer app versions due toincompatible or unsupported operating systems. App developers often drop support for outdated OS versions.

FromTravis Everett – CompTIA A+ All-in-One Exam Guide:

“When an app won't install on an older device, check the OS version. Most apps require a minimum OS level for compatibility and security.”

Comprehensive and Detailed Explanation From Exact Extract:

Group Policyis the standard administrative tool for enforcing security and configuration settings across domain-joined systems, including disabling guest accounts.

FromQuentin Docter – CompTIA A+ Study Guide:

“Disabling guest accounts and applying consistent security policies across multiple machines is best achieved through Group Policy on a Windows domain.”