Most hardware architectures provide an instruction to return from a interrupt, such as iret. This instruction switches the mode of operation from kernel-mode to user-mode. a) Explain where in the operating system this instruction would be b) Explain what happens if an application program executes this in- used. struction.

The word ‘play’ comes with many different interpretations and a variety of definitions. discuss some of the various meanings tied to the word play. why is the concept of play thought to be an important addition to the workplace? do some (brief) research online and give an example of how play in the workplace is being done right.

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How many meatballs required for a larty of 25 adults and 6 children