The BIOS (Basic Input/Output System) or UEFI (Unified Extensible Firmware Interface) setup is a program that allows users to configure the hardware settings of a computer, such as the CPU, memory, disk, and boot options. The BIOS/UEFI setup can be accessed by pressing a specific key (such as F2, F10, or Delete) during the boot process, before the operating system loads12.
One of the settings that can be changed in the BIOS/UEFI setup is the CPU hyperthreading option. Hyperthreading is a technology that enables a single physical CPU core to execute two threads or tasks simultaneously, improving the performance and efficiency of multi-threaded applications. However, some software licenses may limit the number of CPU cores or threads that can be used, and therefore require disabling hyperthreading on the server34.
To disable hyperthreading on a server, the administrator will likely need to enter the BIOS/UEFI setup and navigate to the processor options menu. There, the administrator will find a setting for Intel Hyperthreading Technology or Hyperthreading Function, which can be enabled or disabled. The administrator will need to disable this setting and save the changes. This will turn off hyperthreading on the server and reduce the number of logical CPUs to match the number of physical cores5.

Explanation
The backup type that only records changes to the data blocks on a virtual machine is snapshot. A snapshot is a point-in-time copy of a virtual machine (VM) that captures the state and data of the VM at a specific moment.
A snapshot can be created instantly and with minimal overhead, as it only stores the changes made to the VM after the snapshot was taken. A snapshot can be used to restore the VM to its previous state in case of data loss or corruption.

Something you have is one of the types of authentication methods that relies on a physical object or device that the user possesses to verify their identity. A token is an example of something you have, as it is a small device that generates a one-time password or code that the user enters during login. A token can be a hardware device, such as a key fob or a smart card, or a software application, such as an app on a smartphone or a browser extension. A token provides an additional layer of security to the authentication process, as it prevents unauthorized access even if the user's username and password are compromised1.

RAID 1 is a mirroring technique that creates an exact copy of data on two disks. This provides redundancy and fault tolerance in case of hard drive failure. RAID 1 also improves read performance since either disk can be read at the same time. Therefore, installing the OS on a RAID 1 array meets the first requirement of separating the OS from the application data and protecting it from hard drive failure.
RAID 5 is a striping technique with parity that distributes data and parity blocks across three or more disks. This provides improved performance and storage efficiency compared to RAID 1, as well as fault tolerance in case of a single disk failure. Therefore, configuring RAID 5 for the application data meets the second and third requirements of providing high IOPS performance and data availability.
SSD hard drives are solid-state drives that use flash memory to store data. They have no moving parts and offer faster read and write speeds, lower latency, and lower power consumption than traditional HDDs. Therefore, using SSD hard drives for the data application array meets the second requirement of providing high IOPS performance.
References:
https://phoenixnap.com/kb/raid-levels-and-types
https://en.wikipedia.org/wiki/Standard_RAID_levels

An emergency change request is a type of change management activity that is used to address urgent issues that pose a significant risk to the organization, such as a system breach. An emergency change request requires immediate action and approval, and it may bypass some of the normal change management procedures, such as testing, documentation, or stakeholder communication12.
Reference = 1: Change Management Plans: A Definitive Guide - Indeed(https://www.indeed.com/career-advice/career-development/change-management-activities) 2: The 10 Best Change Management Activities - Connecteam(https://connecteam.com/top-10-change-management-activities/)