Match the following w.r.t. Input/Output management : Code :
2017
Match the following w.r.t. Input/Output management :
Code :
- A.
a - (iii), b - (iv), c - (i), d -(ii)
- B.
a - (ii), b - (i), c - (iv), d -(iii)
- C.
a - (iv), b - (i), c - (ii), d -(iii)
- D.
a - (i), b - (iii), c - (iv), d -(ii)
Attempted by 50 students.
Show answer & explanation
Correct answer: A
Correct matching:
a — performs data transfer (Device controller).
b — processing of I/O request (Device driver).
c — extracts information from the controller register and stores it in a data buffer (Interrupt handler).
d — I/O scheduling (Kernel I/O subsystem).
Why: The device controller is hardware that directly moves data; the device driver is software that handles and translates I/O requests; the interrupt handler quickly reads controller registers and transfers data to buffers when an interrupt occurs; the kernel I/O subsystem schedules and manages higher-level I/O operations.