220-1102 Exam Dumps - CompTIA A+ Questions and Answers

PowerShell (Option C) is a powerful scripting language used in Windows environments for automating tasks, including the configuration of services across multiple systems. It is widely used by system administrators for scripting and automating administrative tasks.

SQL (Option A) is used for managing databases, not for scripting system configurations.

HTML (Option B) is a markup language for web development, not for automating services.

C# (Option D) is a general-purpose programming language but is not primarily used for administrative automation tasks.

CompTIA A+ Core 2 References:

4.8 - Basics of scripting, including PowerShell for automation

The nslookup command is a network administration tool used for querying the Domain Name System (DNS) to obtain domain name or IP address mapping or for any other specific DNS record. It's the most direct way to verify if a PC can resolve a website's domain name to its IP address.  

Here's why the other options are not the primary tools for this task:

B. hostname: This command displays the hostname of the computer.

C. tracert: This command traces the route packets take to reach a specific destination. It can help identify network connectivity issues but doesn't directly test DNS resolution.

D. netstat: This command displays active network connections and listening ports. It's not used for DNS troubleshooting.

How to use nslookup:

Open a command prompt.

Type nslookup (e.g., nslookup google.com) and press Enter.

The output will show the DNS server used and the IP address(es) associated with the website.

If the command returns an error or doesn't show an IP address, it indicates a problem with DNS resolution.

When a customer experiences display issues such as large icons and inaccurate colors after a Windows upgrade, the most appropriate Control Panel option to address these issues is "Device Manager." The technician can use Device Manager to check and update display drivers, which are often the cause of such problems after an OS upgrade. Updating or reinstalling the correct drivers can help resolve display resolution and color issues.

A. Ease of Access focuses on accessibility features and does not directly address display driver issues.

C. Network and Sharing Center is related to network settings and does not affect display settings.

D. Programs and Features is used for managing installed programs and features but is not relevant for updating display drivers.

References:

CompTIA A+ Core 2 (220-1102) Exam Objectives, Section 1.3: Using features and tools of the Microsoft Windows OS, including Device Manager for managing hardware drivers​​.

Detailed Explanation with Core 2 References:Bollards are physical barriers that prevent unauthorized vehicle access to certain areas, providing a preventive measure against unauthorized entry and potential threats. Bollards are classified as a preventive control because they act to deter or block physical access to secured locations, as opposed to video surveillance or alarm systems, which are typically used for detection and monitoring. Core 2 highlights the importance of implementing various physical security controls to protect assets and infrastructure (Core 2 Objective 2.1)​.

The .dmg file type in macOS requires mounting before installation. .dmg files are disk image files used to distribute software on macOS. When opened, they mount a virtual disk on the desktop, from which the application can be installed. Other file types like .pkg, .zip, and .app have different processes for installation and do not require mounting in the same way.

In this scenario, the user cannot access a separate subnet, and all other checks (credentials, network stability, and permissions) have been verified. The next logical step is to check if the user's IP address is being blocked by a firewall.

Option A: Consult with the firewall team to see if the user's IP address is blockedFirewalls can block specific IP addresses, preventing access to certain network segments. Given the problem's nature and the steps already taken, this is the most logical next step to ensure the user's IP is not inadvertently blocked.

Option B: Delete the user’s credentials and create new onesThis step is unnecessary since the credentials have already been verified as correct.

Option C: Run a virus scan on the user's workstationWhile important for overall security, a virus scan is unlikely to resolve an issue specific to accessing a subnet if the problem does not affect other users.

Option D: Update the network drivers on the user’s workstationIf the network connection is stable and the issue is isolated to accessing a specific subnet, network drivers are unlikely to be the cause.

References:

CompTIA A+ 220-1102 Objective 2.0 (Security), particularly firewall settings​​.

Full Comprehensive Explanation: In this situation, the priority is to get the workstation back online and accessing the corporate database as quickly as possible. Restoring from the last backup is the most efficient way to achieve this. It will revert the system to a known working state, likely resolving the software issue without the need for extensive troubleshooting.

The next step after isolating the system is to perform a system scan to remove the malware (Option C). Since ransomware is suspected, running a comprehensive malware scan can help identify and remove the malicious software. It is crucial to deal with the active threat before taking further actions.

Scheduling an antivirus scan and system update (Option A) may help, but the immediate concern is identifying and removing the ransomware.

Educating the end user (Option B) is important but should happen after the immediate threat is resolved.

Creating a system restore point (Option D) would not be useful at this point since the system is infected.

CompTIA A+ Core 2 References:

2.3 - Detect, remove, and prevent malware, including handling ransomware​.

Detailed Explanation with Core 2 References:Rootkits can disable antivirus programs, including Windows Defender, as they operate at a low level within the OS to avoid detection. This issue falls under malware types and removal strategies in Core 2 (Core 2 Objective 2.3)​.

The issue could have been avoided if the developer had used Sandbox testing (Option D), which allows new software to be tested in a controlled environment before implementation. This process ensures that the software does not negatively impact system functionality, like stopping access to critical resources such as file servers.

End-user acceptance (Option A) ensures that users approve the software, but it wouldn't prevent the issue.

Staff delegation (Option B) relates to who is responsible but doesn't address testing.

Appropriate scoping (Option C) helps in defining the extent of changes but does not replace testing.

CompTIA A+ Core 2 References:

4.2 - Explain basic change management best practices, including testing in a sandbox environment​.

Disk encryption is the best method for securing a workstation used in financial transactions, such as point-of-sale systems. It ensures that if the workstation is stolen, all data on the disk is encrypted and cannot be accessed without proper credentials. File encryption (B) only encrypts individual files, and USB drive encryption (C) only applies to removable storage. Data-in-transit encryption (A) is not relevant for physical security.

Time drift occurs when the internal clock of a computer is not properly synchronized, often leading to discrepancies like being an hour behind. In this case, the workstation is the only device affected, indicating that it's likely a local issue. Time drift can happen if the system clock isn't syncing properly with an NTP (Network Time Protocol) server or if automatic daylight savings adjustments aren't enabled. It's less likely to be a CMOS battery issue since the technician has already verified the correct date and the system clock isn’t completely reset (which is what happens when the CMOS battery fails).

References:

Troubleshooting Time Synchronization Issues in Windows​ (Help Desk Geek)​ (Zendesk)

When an organization refuses to pay the ransom for a decryption key after a ransomware attack, and all traces of the infection have been removed, the next critical step is:

Restore critical data from backup: This is the most effective way to recover from a ransomware attack without paying the ransom. Assuming the organization has good backup practices, the backups should be free from infection and can be restored to get the systems operational again.

Scan all of the infected files with up-to-date, anti-malware cleaning software: This step is important during the infection removal process but does not address restoring the encrypted files.

Fully patch the server operating systems hosting the fileshares: While this is necessary to prevent future attacks, it does not recover the encrypted files.

Change the files to be read-only: This will not help recover the encrypted data.

The performance degradation following the launch of a new external web server suggests that Quality of Service (QoS) considerations were overlooked. QoS settings help prioritize traffic to ensure that critical services like web servers receive the bandwidth they need without negatively impacting the overall network performance. Without proper QoS configuration, the new server's traffic could overwhelm the firewall, leading to widespread performance issues.

To ensure device security on the network while adhering to industry best practices, the technician should:

Automate the patching process: This ensures that all devices receive the latest security updates in a timely manner without manual intervention, reducing the risk of vulnerabilities.

Monitor the firewall configuration: Important for network security but does not directly ensure all devices are patched.

Implement access control lists: Controls access to resources but does not ensure devices are patched.

Document all changes: Important for change management but does not directly impact the patching process.