Operating System (OS)
The term 'polling' in a computer means a process by which a computer system

multiplexes the inputs and updates the memory accordingly
None of these
detects/corrects errors
inquires to see if a terminal has any transaction to send
decides correct alternative by analysing several ones

ANSWER DOWNLOAD EXAMIANS APP

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

to parse the source program into the basic elements or tokens of the language.
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 literal table and an identifier table
None of these
to build a uniform symbol table

ANSWER DOWNLOAD EXAMIANS APP