Operating System (OS)
You should choose sleep option when

When computer gets hanged frequently. Let it sleep for some time
You are leaving for a very short time and want to resume you work shortly
You finish working and going to bed
The computer is tired after working for the whole day

ANSWER DOWNLOAD EXAMIANS APP

Operating System (OS)
Backups should be done

as several incrementals, followed by an image copy
daily for most installations
weekly for most installations
None of these
as several image copies, followed by an incremental

ANSWER DOWNLOAD EXAMIANS APP

Operating System (OS)
The function(s) of the Syntax phase is(are)

to recognize the major constructs of the language and to call the appropriate action routines that will generate the intermediate form or matrix for these constructs.
to build a uniform symbol table
None of these
to build a literal table and an identifier table
to parse the source program into the basic elements or tokens of the language.

ANSWER DOWNLOAD EXAMIANS APP