The correct way to share data between several virtual machines running on the same Linux-based host system is by using a network file system or file transfer protocol. A network file system (NFS) is a distributed file system protocol that allows a user on a client computer to access files over a network in a manner similar to how local storage is accessed1. A file transfer protocol (FTP) is a standard network protocol used for the transfer of computer files between a client and server on a computer network2. Both methods allow data to be shared between virtual machines regardless of their underlying file systems or virtualization technologies. The other options are incorrect because they either do not work or are not feasible. Option A is wrong because each virtual machine has its own file system that is not directly accessible by other virtual machines. Option B is wrong because there is no such device as /dev/virt-disks/remote/ that can be used to mount other virtual machines' file systems. Option C is wrong because a ramdisk is a volatile storage device that is not suitable for sharing data between virtual machines. Option E is wrong because attaching the same virtual hard disk to multiple virtual machines can cause data corruption and conflicts, and EXT4 does not have any sharing extensions that can prevent this. References:https://kb.vmware.com/s/article/1012706
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Nested page table extensions, such as Intel Extended Page Table (EPT) or AMD Rapid Virtualization Indexing (RVI), are hardware features that facilitate the virtualization of memory. They allow the CPU to perform the translation of guest virtual addresses to host physical addresses in a single step, without the need for software-managed shadow page tables. This reduces the overhead and complexity of memory management for virtual machines, and improves their performance and isolation. Nested page table extensions do not directly affect the virtualization of other hardware components, such as network interfaces, host bus adapters, hard disks, or IO cache.
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Second Level Address Translation - Wikipedia
c - What is use of extended page table? - Stack Overflow
Hypervisor From Scratch - Part 4: Address Translation Using Extended ...

Docker Hub is acloud-based container image registryused to store, manage, and distribute Docker container images. According to container documentation, it hosts bothofficial imagesand user-contributed images.
Docker Hub is not a Linux distribution, orchestration platform, or runtime. Therefore, the correct answer isB.

LXC (Linux Containers) is acontainer runtimethat uses Linux kernel features such asnamespaces and cgroupsto provide lightweight, isolated environments. According to containerization documentation, LXC allows multiple Linux systems (containers) to run on a single host while sharing the same kernel.
LXC is Linux-specific, uses the Linux kernel directly, and is not a virtual machine manager. Therefore, the correct answer isC.