useless trivia: What Word Means: A Short Time - A Sandpiper - A Dunlin - A Stent?

Questions

Complex disease of uncertain origin caused by the faulty metabolism of uric acid produced in the body by breakdown of protein, & resulting in elevated levels of uric acid in the blood?

Computers - a "lan" is called a_________?

Computers - a file which has a "hidden attribute" is called a__________?

Computers - all keys that have a "F" with a number,are called a________?

Computers - demo means_______?