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How can a parent and child process communicate?
A parent and child can communicate by any of the normal inter-process communication schemes (pipes, sockets, message queues, shared memory), but also have some special ways to communicate that take benefits of their relationship as a parent and child. One of the most obvious is that the parent can get the exit status of the child.
Q. Copy file from a floppy disk to the hard disk? While using a PC, often you need to copy file from a floppy disk to the hard disk or vice-versa. For instance, you buy some s
These five questions are part of the assignment. The answers of each question can be written in around 300 words (with relevant diagrams and Refrences). Assignement should be comnp
Q. Why are high-speed memories required? Is the main memory not a high-speed memory? The answer to second question is absolutely 'No' though why so? Then if memories are slowe
In the past there was a large gap between speed of a memory andprocessor. So a subroutine execution for an instruction for illustration floating point addition may have to follow a
Basic Operational Concepts of a Computer: Most of computer operations are executed in the ALU (arithmetic and logic unit) of a processor. For an example: to add 2 numb
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Q. Illustration of a demon program? When the PVM initialize it inspects the virtual machine in that it's to operate and creates a process known as PVM demon or simply pvmd on e
Explain the stack in digital computers The stack in digital computers is fundamentally a memory unit with an address register which can count only (after first value is loaded
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