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Define Middleware to Ease the Low-Level Protocol Burden
Fortunately, many products are available today to ease the low-level protocol burden on the application programmer. Middleware is a term used to denote these products that provide soft ware layers to shield the complexity of application development from core underlying protocols or services. Sample middle ware includes session - oriented, RPC - based, message- oriented, database interface systems and file- transfer products from a variety of vendors.
System Service Program system service program Supports and provides the services for other program. System service program perform Varity of tasks. They are further divided in
Example 1. The diagram illustrating the data structures of in-memory VFS objects and on-disk objects and their relationships on slide 24 of the lecture notes OSD.4. This diagram i
Q. Polling for an I/O completion is able to waste a large number of CPU cycles if the processor iterates a busy-waiting loop several times before the I/O completes. However if the
What are the different accessing methods of a file? The different types of accessing a file are: Sequential access: Information in the file is accessed sequentially
EXAMPLE FOR SEGMENTATION Consider an instance as given in the table and we have five segments numbered from 0 through 4 the segment is stock in the physical memory as shown. Th
Gopher Gallery consists of a shopping mall and a cart ride that covers the 150 acre habitat. There are m visitors and n single-person vehicles. Visitors stroll around the mall at t
What is a Latency Time Latency Time is the time required through a sector to reach below read/write head.
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Page Fault Handling conditions like, where the copy on write bit of a page is set and that page is send by more than one process, the Kernel assign new page and copies the conten
Compare contiguous-memory allocation with pure paging in the following aspects: 1. In support of dynamic memory allocation: most systems allow programs to allocate more memory t
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