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What is an I/O buffer? What is the advantage of buffering? Is buffering always effective? Justify your answer with help of an example.
One type of I/O requirement arises from devices which have a very high character density like tapes and disks. With these attributes, it is not possible to regulate communication along with devices on a character-by-character basis. Hence, the information transfer is regulated in blocks of information. In addition, sometimes this may need some type of format control to structure the information to suit the device and/or data characteristics. For example, a disk drive is different from a line printer or an image scanner.
For each of these devices, the format and structure of information is dissimilar. It should be examined that the rate at which a device may offer data and the rates at which an end application may consume it might be significantly different. In place of these differences, the OS should offer uniform and easy to use I/O mechanisms. Generally, this is done by providing an I/O buffer. The OS manages this buffer thus as to be able to comply with the requirements of both the producer and consumer of data. Essentially, the buffers absorb mismatch in the data transfer rates of processor or memory on one side and device on the other.
Can we specify file transfer in a Web page? Explain with the help of suitable example. Yes, file transfer can be given in a web page. The first field within a URL gives a proto
zmax=7.5x1-3x2 subject to constraints 3x1-x2-x3>=3 x1-x2+x3>=2 x1,x2,x3>=0
With a C program to read the text book number, title, author and publisher into a structure and print these values. # include # include void main() { struct boo
Designed, developed, tested and documented the demo created for NPBlox framework. NPBlox framework is a framework which enabled developers to create CLI/WEB/SNMP interfaces for
You presently work for an automotive parts supply store. Your company is growing, and is considering expansion. The company presently has three locations (North, South, and Central
The Credit Line The Credit Line is a set of informational facts usually found below or beside a picture of a work of art. Should the picture appear in a book, magazine, poster,
What is the advantage of buffering? Is buffering always effective? Justify your answer with help of an example. I/O buffer: One type of input-output requirement arises from d
Q. Versions of small computer systems interface? SCSI-1 calls for a cable with 8 data wires plus one for parity. SCSI-2 allows use of multiple cables to support 16- or
how to implement a modified distribution method using c/c++
What are instruction hazards? The pipeline might also be stalled because of a delay in the availability of an instruction. For instance, this may be a result of a miss in the c
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