单选题 Which I/O technique allows devices to transfer data directly to and from memory without CPU intervention?
A、 Interrupt-driven I/O
B、 Direct Memory Access (DMA.
C、 Polling
D、 Spooling
单选题 What is the purpose of buffering in I/O management?
A、 To hold data temporarily during an I/O operation
B、 To increase CPU usage
C、 To slow down data transfer
D、 To manage network connections
单选题 What is the role of an interrupt in I/O operations?
A、 To allocate memory
B、 To signal the CPU when an I/O operation has completed
C、 To increase disk speed
D、 To manage network traffic
单选题 What is the primary role of the I/O system in an operating system?
A、 To manage CPU scheduling
B、 To handle communication between hardware devices and software
C、 To manage memory allocation
D、 To organize files on the disk
单选题 Which of the following is an example of a character device?
A、 Hard disk
B、 Keyboard
C、 DVD drive
D、 SSD
单选题 Which of the following is a block device?
A、 Monitor
B、 Mouse
C、 Hard disk
D、 Keyboard
单选题 What is the function of a device driver?
A、 To manage memory
B、 To allocate CPU time
C、 To provide an interface between the operating system and hardware devices
D、 To manage network connections
单选题 Which I/O technique involves the CPU continuously checking the status of a device?
A、 Interrupt-driven I/O
B、 Direct Memory Access (DMA.
C、 Polling
D、 Buffered I/O
2024-08-29
共35道
