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Q. Why is it complicated to protect a system in which users are allowed to do their own I/O?
Answer: In earlier chapters we identified a distinction among kernel and user mode where kernel mode is utilized for carrying out privileged operations such as I/O. One reason why I/O should be performed in kernel mode is that I/O requires accessing the hardware as well as proper access to the hardware is necessary for system integrity. If we permit users to perform their own I/O we can't guarantee system integrity.
The field that consists of a segment index or an internal index is known as Target datum is field that consists of a segment index or an internal index.
origin of opreation reasrech
Cold Backup: It is copying the three groups of files when the object is shut down. This is a straight file copy, generally from the storage disk directly to tape. You must end th
KERNEL ACTIVITY FOR ULTS: The kernel isn't aware of thread activity but it is still managing process activity. When a thread compose a system call the whole process will be bl
Modern networks are not implemented as a single piece of software; that would render the task of dealing with multiple technologies and manufacturers virtually impossible. The solu
Define memory management In multiprogramming system the user part of memory should be further subdivided to accommodate multiple processes. The task of subdivision is carried o
how does DMA increase system concurrency
ADVANTAGES OF MICROFERNEL IN YSTEM DESIGN?
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
Q. Consider a system that holds 5000 users. Presume that you want to allow 4990 of these users to be able to access one file. a. How would you denote this protection scheme in
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