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Q. What are two differences among user-level threads and kernel-level threads? Under what situations is one type better than the other?
Answer:
(1) User-level threads are unidentified by the kernel whereas the kernel is aware of kernel threads.
(2) On systems utilizing either M:1 or M:N mapping user threads are scheduled by the thread library and the kernel schedules kernel threads.
(3) Kernel threads require not be associated with a process where as each user thread belongs to a process. Kernel threads are usually more expensive to maintain than user threads as they must be represented with a kernel data structure.
List two types of system directories A) Device directory:- Describing physical properties of files. B) File directory :- Giving logical properties of the files.
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Placement algorithms :calculate where in available real-memory to execute a program. Common functions are next-fit, first-fit, and best-fit. Replacement algorithms :are
factors that influences layout
What is monolithic and its diagram
Tree structured directories: This is the main common directory structure. The tree has a root directory as well as every file in the system has a unique path name. A directory
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
Question: OS Installation / File system a) Why is NTFS portioning preferred over FAT16 or FAT32 when security is of primary concern? b) State a situation or an application w
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