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Q. Provide two programming instances in which multithreading provides better performance than a single-threaded solution.
Answer: (1) A Web server that services every request in a separate thread.
(2) A parallelized application such like matrix multiplication where different parts of the matrix may be worked on in parallel.
(3) An interactive GUI program such like a debugger where a thread is used to monitor user input and another thread represents the running application and a third thread monitors performance.
What is segmentation? In a segmented memory management scheme a programmer views a program to be collection of program components called as segments. Every segment is a logical
Q. Give the reasons why Windows XP, Solaris and Linux implement multiple locking mechanisms. Explain the circumstances under which they use mutexes, spinlocks, semaphores, adaptiv
Q. In the IBM/370 memory protection is offered through the use of keys. A key is a 4-bit quantity every 2K block of memory has a key (the storage key) associated with it. The CPU
In a multiprogramming and time sharing environment several users share the system simultaneously .what are two such problems?
Virtual file systems The file-system execution having of three major layers. The first layer is the file-system interface, based on the open, read, write and close calls and fi
What is linked allocation, as detailed in text? Directory has pointers to first and last blocks of file. Every block of file (except last) has pointer to the next block.
with the aid of diagrams describe the following os structures monolithic , layered, client server
Q. Describes responsibilities of the I/O manager? Answer: The I/O manager is responsible for file systems and device drivers and network drivers. The I/O manager keeps follow
Write a short note on file organization and access. There are three methods to access files 1Record Access 2Sequential Access 3Random Access The record access
Q. Why might a system utilize interrupt-driven I/O to manage a single serial port however polling I/O to manage a front-end processor such as a terminal concentrator? A
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