Which one of the following connects high-speed high-bandwidth device to memory subsystem and CPU.

A. Expansion bus
B. Pci bus
C. Scsi bus
D. None of the mentioned

Which buffer holds the output for a device?

A. Spool
B. Output
C. Status
D. Magic

The device-status table contains ____________

A. Each i/o device type
B. Each i/o device address
C. Each i/o device state
D. All of the mentioned

Which hardware triggers some operation after certain programmed count?

A. Programmable interval timer
B. Interrupt timer
C. Programmable timer
D. None of the mentioned

Device drivers are implemented to interface ____________

A. Character devices
B. Block devices
C. Network devices
D. All of the mentioned

When hardware is accessed by reading and writing to the specific memory locations, then it is called ____________

A. Port-mapped i/o
B. Controller-mapped i/o
C. Bus-mapped i/o
D. None of the mentioned

The host sets _____ bit when a command is available for the controller to execute.

A. Write
B. Status
C. Command-ready
D. Control

The data-in register of I/O port is ____________

A. Read by host to get input
B. Read by controller to get input
C. Written by host to send output
D. Written by host to start a command

I/O hardware contains ____________

A. Bus
B. Controller
C. I/o port and its registers
D. All of the mentioned

All the changes that were done from a transaction that did not commit before the system crashed, have to be _________

A. Saved
B. Saved and the transaction redone
C. Undone
D. None of the mentioned