The                    present a uniform device- access interface to the I/O subsystem, much as system calls provide a standard interface between the application and the operating system.

Related MCQs

• When device A has a cable that plugs into device B, and device B has a cable that plugs into device C and device C plugs into a port on the computer, this arrangement is called a
• To access the services of operating system, the interface is provided by the                        
• To access the services of operating system, the interface is provided by the
• The                program initializes all aspects of the system, from CPU registers to device controllers and the contents of main memory, and then starts the operating system.
• A situation where several processes access and manipulate the same data concurrently and the outcome of the execution depends on the particular order in which access takes place is called                          
• The                calls certain procedures on remote systems and is used to perform synchronous or asynchronous interactions between systems.
• When a peripheral device needs immediate attention from the operating system, it generatesa(n)
• When several processes access the same data concurrently and the outcome of the execution depends on the particular order in which the access takes place, is called?
• If the memory access time is denoted by ‘ma’ and ‘p’ is the probability of a page fault (0 <= p <= 1). Then the effective access time for a demand paged memory is
• A keyboard is an example of a device that is accessed through a                      interface.