A queue is a sequentially ordered data structure that uses the first in, first out (FIFO) principle for adding and removing items.

Communication is not one of the major categories of system calls.

The process of starting a computer by loading the kernel is known as BIOS.

The "export" command is used to turn a local variable into an environment variable.

The "chmod +x filename" command makes a file executable.

Linux-based and Windows-based Operating Systems can use Kernel Virtual Machine (KVM).

The primary difficulty in designing a layered operating system approach is ensuring each layer is easily converted to modules.

The host system is protected from a virtual machine, but several virtual machines running on the same host are not protected from each other.

The output below indicates that "user1" has read and write permissions for "file.txt":

Virtual machines first appeared commercially on mainframes in the 1970s.