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Write on short note DMA.
Direct Memory Access (DMA) is a technique for transferring data from main to a device without passing it through the CPU. Computers that have DMA channels are able to transfer data to and from devices much more quickly than computers without a DMA channel can. This is helpful for making quick backups and for real-time applications.
A few expansion boards such as CD-ROM cards are capable of accessing the computer's DMA channel. When you install the board, you should specify which DMA channel is to be used, which sometimes engross setting a jumper or DIP switch.
Define Segmentation The memory allocation method subject to “external” fragmentation is Segmentation.
List disadvantages of using a single directory. Users have no privacy. Users must be careful in choosing file names, to avoid names used by others. Users may destroy each othe
We are use to using variables within C without thinking about where they are stored. Most variables are dynamic i.e. can change, therefore they are stored in Ram, unlike a program
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Question 1: (a) Describe what is meant by Client-server Computing? (b) Distinguish between a server process and a client process. (c) What are the basic characteristics o
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Consider the following C program where M, N, K are predefined constants. Assume int is 4 bytes. Suppose this program is run on a machine with 4KB page size and 32 TLB entries. Init
explain about design issues of network operating system
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