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Tag Archives: Input Output Systems

The cin object in C++ is used to accept the input from the standard input device i.e., keyboard. it is the instance of the class… Read More
The cout object in C++ is an object of class ostream. It is defined in iostream header file. It is used to display the output… Read More
The cin object in C++ is an object of class istream. It is used to accept the input from the standard input device i.e. keyboard.… Read More
In this article, we will discuss the very basic and most common I/O operations required for C++ programming. C++ runs on lots of platforms like… Read More
Put the following disk scheduling policies results in minimum amount of head movement. (A) FCFS (B) Circular SCAN (C) Elevator Answer: (C) Explanation: Circular scanning… Read More
Normally user programs are prevented from handling I/O directly by I/O instructions in them. For CPUs having explicit I/O instructions, such I/O protection is ensured… Read More
From amongst the following given scenarios determine the right one to justify interrupt mode of data-transfer: Source: nptel (A) Bulk transfer of several kilo-byte (B)… Read More
We describe a protocol of input device communication below. a. Each device has a distinct address b. The bus controller scans each device in sequence… Read More
Which of the following is major part of time taken when accessing data on the disk? (A) Settle time (B) Rotational latency (C) Seek time… Read More