An IDRAC (Integrated Dell Remote Access Controller) is a tool that can be used to command a remote shutdown of a physical Linux server. An IDRAC is a hardware device that provides out-of-band management for Dell servers. It allows the technician to access the server's console, power cycle, reboot, or shut down the server remotely using a web interface or a command-line interface. An IDRAC does not depend on the operating system or network connectivity of the server. A virtual serial console is a tool that can be used to access a remote virtual machine's console using a serial port connection. A KVM (Keyboard, Video, Mouse) switch is a device that allows the technician to switch between different computer sources using the same keyboard, monitor, and mouse. A crash cart is a mobile unit that contains a keyboard, monitor, mouse, and other tools that can be connected to a physical server for troubleshooting purposes. References: https://www.dell.com/support/kbdoc/en-us/000131486/understanding-the-idrac https://www.howtogeek.com/799968/what-is-a-kvm-switch/ https://www.techopedia.com/definition/1032/business-impact-analysis-bia

Explanation
The concept of right to downgrade allows a previous version of an OS to be installed and covered by the same license as the newer version. For example, if a customer has a license for Windows 10 Pro, they can choose to install Windows 8.1 Pro or Windows 7 Professional instead and still be compliant with the license terms.
Downgrade rights are granted by Microsoft for certain products and programs, such as Windows and Windows Server software acquired through Commercial Licensing, OEM, or retail channels. Downgrade rights are intended to provide customers with flexibility and compatibility when using Microsoft software.

Explanation
A snapshot is a feature that can be used in hypervisors to restore to a previous version. 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.

Reflective glass is an architectural reinforcement that attempts to conceal the interior of an organization by reflecting light and preventing outsiders from seeing inside. Reflective glass can also reduce heat and glare, and enhance the aesthetic appearance of a building. Reflective glass is often used in high-security facilities, such as data centers, government buildings, or corporate headquarters12
1: Server Architecture for CompTIA Server+ (SK0-004) | Pluralsight 2: Introducing the CompTIA Infrastructure Career Pathway

A Fibre Channel SAN solution is a type of storage area network (SAN) that uses high-speed optical fiber cables to connect servers and storage devices. A SAN allows for hosting data without impacting performance when the data is accessed in real time by multiple users, as it provides fast data transfer rates, low latency, high availability, and scalability12. A local external hard drive (A) would not be suitable for multiple users, as it would limit the accessibility and security of the data. Adding extra memory to the server (B) would not solve the problem of data access performance, as it would not increase the bandwidth or reduce the congestion of the network. Compressing the data would not improve the performance either, as it would add extra overhead and complexity to the data processing and retrieval. References: 1 https://www.techradar.com/best
/best-cloud-storage 2 https://solutionsreview.com/data-storage/the-best-enterprise-data-storage-solutions/