$16\mathrm{.}2$ Explain the major error in the following sentence: "One of the major tasks performed by the operating system program is to load and execute programs."

$16\mathrm{.}3$ Explain concurrent processing. Briefly describe at least two services that an operating system must provide to support concurrent processing.

$16\mathrm{.}4$ What are the memory resident parts of an operating system called? When are these parts loaded into memory?

$16\mathrm{.}5$ What is a diskless workstation or thin client?

$16\mathrm{.}6$ What does API stand for? What is the purpose of an API?

$16\mathrm{.}7$ Operating systems are said to be event driven. Explain what this means.