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Operating systems (MESIIN477625)
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From this symbolic notation of a file permissions :
Given the following ARM assembly code, what is the final value of register r2?
Hint :
o cmp compare two values by subtracting the second operand from the first.
o bne means branch if not equal.
Given the following ARM assembly code, what is the final value of register r2?
Hint :
o cmp compare two values by subtracting the second operand from the first.
o bne means branch if not equal.
Read the following C program and answer the questions :
1 - After calling this program, how many processes exist?
2 - What distinguishes the parent from the child?
3 - What is the purpose of the wait() system call in a parent process?
4 - After execv("/bin/date", args), what happens to the child’s original code?
5 - If /bin/date does not exist, what will happen?
Read the following C program and answer the questions :
1 - After calling this program, how many processes exist?
2 - What distinguishes the parent from the child?
3 - What is the purpose of the wait() system call in a parent process?
4 - After execv("/bin/date", args), what happens to the child’s original code?
5 - If /bin/date does not exist, what will happen?
Read the following C program and answer the questions :
1 - After calling this program, how many processes exist?
2 - What distinguishes the parent from the child?
3 - What is the purpose of the wait() system call in a parent process?
4 - After execv("/bin/date", args), what happens to the child’s original code?
5 - If /bin/date does not exist, what will happen?
Given the following ARM assembly code, what is the final value of register r2?
Hint :
o cmp compare two values by subtracting the second operand from the first.
o bne means branch if not equal.
Given the following ARM assembly code, what is the final value of register r2?
Hint :
o cmp compare two values by subtracting the second operand from the first.
o bne means branch if not equal.
Given the following ARM assembly code, what is the final value of register r2?
Hint :
o cmp compare two values by subtracting the second operand from the first.
o bne means branch if not equal.
Processes can communicate using two main mechanisms: shared memory (e.g., via buffers) and message passing (e.g., via sockets). Which mechanism is more suitable for distributed systems?