Operating System (OS)
The file structure that redefines its first record at a base of zero uses the term:

relative organization
hashing
dynamic reallocation
None of these
key fielding

ANSWER DOWNLOAD EXAMIANS APP

Operating System (OS)
Multiprogramming systems:

execute more jobs in the same time period
None of these
are used only on large mainframe computers
execute each job faster
are easier to develop than single programming system

ANSWER DOWNLOAD EXAMIANS APP