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Q. Explain about disk caching scheme?
The disk caching scheme can be used to speed up performance of disk drive system. A set (cache) of buffers is assigned to hold some disk blocks that have been recently accessed. In effect the cached blocks are in memory copies of disk blocks. If data in a cache buffer memory is modified only local copy is updated at that time. Therefore processing of data occurs using cached data avoiding need to frequently access disk itself.
A computer system provides protection using the Bell-LaPadula policy. How would a virus spread if A) the virus were placed on the system at system low (the compartment that all o
Describe queue? Ans: It is a type of data structure in which the data are stored in and retrieved on a First in first out (FIFO) basis. It grows in the direction of increasin
Q. What are the types of parallel programming? There are various parallel programming models in general use. A few of them are: Data Parallel programming Message P
Define Process Control Block (PCB). Process Control Block (PCB): Information related with each process is stored into Process control Block. a) Process state b)
A subscriber makes three phone calls of 3 minutes, 4 minutes and 2 minutes duration in a one hour period. Calculate the subscriber traffic in erlangs, CCS and CM. Subscriber tr
Problem : (a) Show whether or not a standard format for representing data, such as XML, is needed. (b) Using an appropriate example, describe how data is organized in a dat
Q. Explain Magnetic Read and Write Mechanisms? Data are recorded on and then retrieved from disk via a conducting coil called the head. In numerous systems there are two heads,
A certain amount of side tone is essential in telephone communication. Ans: It is true that a specific amount of side tone is necessary in telephone communication.
Explain The while loop in C The while loop keeps repeating an action until an associated test returns false. This is useful where the programmer does not know in advance how ma
A class invariant is a condition that describes all valid states for an object. It is a logical condition to make sure the correct working of a class. Class invariants must hold wh
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