If a resource is __________ multiplexed, each receives a part of the resource instead of the programs or users taking turns.

		Resource
		Time
		Space
		File

The process of making sure that if a word is present in two or more caches and one of the CPUs modifies the word, it is automatically and atomically removed from all the caches in order to maintain consistency is called?

		Buffering
		Snooping
		Mirroring
		Replication

The ultimate goal of Ubiquitous computing according to Mark Weiser is__________

		Cloud Computing.
		Transparent Computing.
		Pervasive Computing.
		Parallel Computing.

The parent executes a _______ system call to wait until the child process terminates.

		Fork
		Unlink
		Waitpid
		Wait

In layered system which layer is responsible for communication between each process and the user?

		One
		Three
		Four
		Two