This is the first post I have done. Figured I would pick your guy's brains :)

The Operating system's ____ accepts, interprets, and carries out commands.
a. User interface ( I think that's what it is)
b. IOCS
c. File system
d. API

The set of available user interface commands and their syntax rules form a ___.
a. GUI (I think this is it)
b. Shell
c. Batch Language
d. Command language

When a file is____, the file system reads the directory, finds the file's directory entry, extracts the file's start address, and sometimes even reads all or part of the file.
a. Opened
b. Closed
c. Accessed
d. Created

____is the total execution time - for all programs - divided by the total elapsed time and is often expressed as a percentage.
a. Throughput
b. Turnaround
c. Response time
d. Bandwidth

_____occurs when there are two or more programs and each controls a resource needed by the other.
a. Polling
b. An interrupt (I think this is what it is)
c. Deadlock
d. Spooling

Using_____, an MS-DOS user can change or override the standard input or output.
a. Pipes
b. Wildcard characters ( I think)
c. Redirection parameters
d. Filters

The standard Windows user interface is called the desktop

Ignore the last sentense, I know the rest of the questions.