220-1201 Practice Question: A technician is tasked with enabling…

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

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  Enable Secure Boot

  Why it's wrong here

  Secure Boot is a UEFI firmware feature designed to enhance system security by preventing the loading of unauthorized operating system bootloaders and drivers during startup. It verifies the digital signatures of boot components against a database of trusted certificates to ensure system integrity. While crucial for protecting against rootkits and malware, Secure Boot does not directly enable or facilitate hardware-level virtualization, which relies on specific CPU extensions for efficient hypervisor operation.

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  Enable Execute Disable Bit (XD/NX)

  Why it's wrong here

  Execute Disable Bit (Intel XD) or No-Execute bit (AMD NX) is a CPU security feature that marks certain memory regions as non-executable. This hardware-enforced protection helps prevent specific types of malicious code, such as buffer overflow attacks, from running in data-only memory areas, thereby enhancing system security. Although a vital security measure, XD/NX is unrelated to the CPU's ability to support or accelerate virtualization technologies, which require dedicated instruction sets for direct hardware access.

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  Enable Intel VT-x or AMD-V

  Why this is correct

  Intel Virtualization Technology (VT-x) and AMD Virtualization (AMD-V) are essential CPU extensions that provide hardware-assisted virtualization capabilities. These technologies allow a hypervisor to run virtual machines more efficiently by directly accessing hardware resources, significantly reducing the overhead typically associated with software-only virtualization. Enabling these features in the BIOS/UEFI firmware is a prerequisite for deploying and optimizing virtualized environments, ensuring guest operating systems perform near native speeds and enhancing overall virtualization performance.

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  Set SATA mode to AHCI

  Why it's wrong here

  Advanced Host Controller Interface (AHCI) is a technical standard that defines an operation mode for SATA controllers, enabling advanced features like Native Command Queuing (NCQ) and hot-swapping. Its primary purpose is to improve the performance and functionality of SATA hard drives and solid-state drives by optimizing data transfer and command processing. AHCI is a storage interface standard and has no direct bearing on the CPU's ability to perform hardware-level virtualization; it only affects how storage devices communicate with the system.

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