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What are two differences among user-level threads and kernel-level threads? Under what circumstances is one type better than the other?
(1) User-level threads are unknown by the kernel, while the kernel is aware of kernel threads.
(2) User threads are listed by the thread library and the kernel schedules kernel threads.
(3) Kernel threads require not be associated with a process while every user thread belongs to a process.
Suppose your process starts up, and allocates some memory with malloc(). The allocator will then give part of a memory page to your process. The OS then updates the corresponding p
What are the drawbacks of contiguous allocation of disk space? The disadvantages are a. Suffers from internal fragmentation b. Suffers from external fragmentation c. F
Managing the interaction of client and server Among the differences between traditional application programs and client server ones is that developers must create a mechanism
Explain hierarchy level directory
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A UNIX file system has 1-KB blocks and 4-byte disk addresses. What is the maximum file size if i-nodes contains 10 direct entries, and one single, double, and triple indirect entry
Explain Terminal Symbols Terminal symbols are literal strings that are forming the input of a formal grammar and cannot be broken down into smaller units with no losing their l
A hard-disk drive reads “120 GB HDD 7200 rpm 3 GB/sec transfer rate”. If the drive has a sector size of 512 bytes, what is the average rotational latency and transfer time to read
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The Cigarette-Smokers difficulty Consider a system with three smoker processes and one agent process. Every smoker continuously rolls a cigarette and then smokes it. But to roll as
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