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Mention the various features that characteristics the deadlock condition.
The four circumstances that give rise to deadlock condition are:
1) Mutual exclusion: As a minimum one resource must be held in the non-sharable mode that is only one process is able to be used at a time. If another process demand for the resource it should wait.
2) Hold and wait: A process should be holding at least one resource and wait for other process to give the resource to it.
3) No preemption: Resources not able to be preempted; it cannot be taken from one process with force.
4) Circular wait: Assume consider a set of process {p1, p2, p3.......} in the waiting queue such that p1 is waiting for the resource held by process p2 etc.
Difference between cache and associate memory
Construct a process tree similar to Figure 1. Look up the Linux command pstree -p and describe what it does. Then type in the command the capture the output.
Difference between threads and processes 1. Thread is flow of implementation. Process is group of instruction which is alike to that of a program except which may be stopped an
Define Segmentation The memory allocation method subject to “external” fragmentation is Segmentation.
What are the functions of virtual file system (VFS)? a. It separates file-system-generic operations from their execution defining a clean VFS interface. It permits transparent
Why is it not possible to enforce memory protection at compile time? Every process should be protected against unwanted interference by other process, whether intentional or
Q. It is occasionally said that tape is a sequential-access medium whereas magnetic disk is a random-access medium. In fact the correctness of a storage device for random access d
List three ways of allocating storage, and give advantages of each. a. Contiguous allocation. Fastest, if no changes are to be made. Also simplest for random access files. b
demonstrate ergonomics
Determine the reasons for Poor response time Process busy or High I/O rates or High paging rates
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