Multifactor authentication (MFA) requires the use of two or more verification factors to gain access to a resource such as an application, online account, or a VPN. The factors are categorized into something you know (like a password or PIN), something you have (like a security token or a smartphone), and something you are (like a biometric verification such as a fingerprint).
Fingerprint and password:This combination meets the criteria for MFA as it uses two different categories of authentication factors: "something you are" (fingerprint) and "something you know" (password). This enhances security by combining two distinct methods of authentication.
Other combinations mentioned:
Password and PIN:Both of these factors fall under the same category of "something you know," and hence, do not constitute multifactor authentication.
Password and swipe:Swiping a pattern is similar to a password in that it is something you know, so this does not qualify as multifactor authentication.
Swipe and PIN:Again, both of these are "something you know" and do not qualify as multifactor authentication since they fall under the same category.

Time Machine is the built-in backup feature for macOS that allows users to back up their system automatically. It continuously backs up everything on the Mac, including files, applications, system files, and settings, allowing users to restore their system to a previous state if needed. Time Machine operates by creating hourly backups for the past 24 hours, daily backups for the past month, and weekly backups for all previous months. Other options like "Mission Control" help in organizing windows, while "System Restore" is a feature more common in Windows operating systems, not macOS.
References:
Apple Support: Use Time Machine to back up or restore your Mac
CompTIA A+ Study Guide - Backup and Recovery Concepts in macOS (Whizlabs)

Remote network installation is the best option for configuring a new server that requires a bare-metal installation without installation media on site. A remote network installation is a method of installing an operating system or an application over a network connection, such as LAN, WAN, or Internet. A remote network installation can use various protocols, such as PXE, HTTP, FTP, or SMB, to access the installation files from a server or a cloud service. A remote network installation can also use various tools, such as Windows Deployment Services, Microsoft Deployment Toolkit, or Red Hat Kickstart, to automate and customize the installation process. A remote network installation can save time and resources by eliminating the need for physical media and allowing centralized management of multiple installations. Image deployment, recovery partition installation, and repair installation are not correct answers for this question.
Image deployment is a method of installing an operating system or an application by copying a preconfigured image file to a target device. Image deployment requires an existing image file and a compatible device.
Recovery partition installation is a method of restoring an operating system or an application from a hidden partition on the hard disk that contains the original factory settings. Recovery partition installation requires an existing recovery partition and a functional hard disk. Repair installation is a method of fixing an operating system or an application that is corrupted or damaged by replacing or repairing the system files without affecting the user data or settings. Repair installation requires an existing operating system or application and a working device. References:
* Official CompTIA learning resources CompTIA A+ Core 1 and Core 2, page 16
* CompTIA A+ Complete Study Guide: Core 1 Exam 220-1101 and Core 2 Exam ..., page 106

Explanation
The first mitigation step that a technician should take when a machine is suspected to contain ransomware is to quarantine the system. This means isolating the infected machine from the network and other devices, to prevent the ransomware from spreading and encrypting more data. The technician can quarantine the system by disconnecting the network cable, turning off the wireless adapter, or using firewall rules to block the traffic from and to the machine12.
This step is more important than the other options because:
Disabling System Restore (A) is not a priority, as it will not stop the ransomware from running or spreading. System Restore is a feature that allows users to restore their system to a previous state, but it may not work if the ransomware has encrypted or deleted the restore points. Moreover, disabling System Restore may prevent the user from recovering some data or settings in the future13.
Remediating the system (B) is the ultimate goal, but it cannot be done before quarantining the system.
Remediating the system means removing the ransomware, restoring the data, and fixing the vulnerabilities that allowed the attack. However, this process requires careful analysis, planning, and execution, and it may not be possible if the ransomware is still active and communicating with the attackers. Therefore, the technician should first isolate the system and then proceed with the remediation steps12.
Educating the system user is a preventive measure, but it is not a mitigation step. Educating the system user means raising awareness and providing training on how to avoid ransomware attacks, such as by recognizing phishing emails, avoiding suspicious links or attachments, and updating and patching the system regularly. However, this step will not help if the system is already infected, and it may not be effective if the user is not willing or able to follow the best practices. Therefore, the technician should focus on resolving the current incident and then educate the user as part of the recovery plan14.
References:
1: How to Mitigate Ransomware Attacks in 10 Steps - Heimdal Security1 2: 3 steps to prevent and recover from ransomware | Microsoft Security Blog3 3: How to use System Restore on Windows 10 | Windows Central5 4: Ransomware Mitigation | Prevention and Mitigation Strategies - Delinea4

When a user reports slow performance, a changed home page, and pop-up ads, these are classic signs of malware infection. The first step should be:
* Update the antivirus program and run a full system scan: This helps identify and remove any malware present on the system, addressing the root cause of the issues.
* Uninstall the suspicious search engine and reset the home page: This addresses the symptom but not the underlying cause, which is likely malware.
* Install the latest updates for the operating system: Important for security but secondary to removing malware.
* Block the pop-up ads using the web browser settings: Again, addresses the symptom but not the root cause.
Reference:
CompTIA A+ 220-1102 Exam Objectives, Section 3.3: Given a scenario use best practice procedures for malware removal.
Malware identification and removal documentation.