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

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

ANSWER DOWNLOAD EXAMIANS APP

Operating System (OS)
File record length

depends upon the size of the file
should always be fixed
Should always be variable
should be chosen to match the data characteristics
None of these

ANSWER DOWNLOAD EXAMIANS APP

Operating System (OS)
The Register - to - Register (RR) instructions

which perform indicated operations on two fast registers of the machine and leave the result in one of the registers.
None of these
which perform an operation on a register operand and an operand which is located in the main store, generally leaving the result in the register, except in the case of store operation when it is also
All of these
have both their operands in the main store.

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Operating System (OS)