I. If a sentence is correct write true if the sentence is incorrect write false.

1. A modern computer consists of one or more processors.

2. An operating system is a program that acts as an intermediary/interface between a user of

a computer and the computer hardware.

3. Program execution deals with the specifics of I/O and file formats.

4. System access resolves conflicts for resource contention

Dean wants a quick way to look up staff members by their staff id. in cell q3, nest the existing vlookup function in an iferror function. if the vlookup function returns an error result, the text “invalid staff id” should be displayed by the formula. (hint: you can test that this formula is working by changing the value in cell q2 to 0, but remember to set the value of cell q2 back to 1036 when the testing is complete.)

Are special combinations of keys that tell a computer to perform a command. keypads multi-keys combinations shortcuts

On early television stations, what typically filled the screen from around 11pm until 6am? test dummies test patterns tests testing colors