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GATE 2022: Operating System Quiz-4
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Question 1
Consider the following statement given below:
S1: Inter process communication and sharing is easier between processes than threads.
S2: There is no protection between threads of same process.
Which of the above statements are incorrect?
S1: Inter process communication and sharing is easier between processes than threads.
S2: There is no protection between threads of same process.
Which of the above statements are incorrect?
Question 2
Consider the following statements with respect to inter process communication:
S1 : Message passing is useful for exchanging smaller amount of data.
S2 : Message passing require kernel support
S3 : Shared memory is faster than message passing mechanisms.
S4 : Shared memory are implemented with the help of system calls and continuous requires system call support for exchanging data.
Which of the statements are NOT TRUE?
S1 : Message passing is useful for exchanging smaller amount of data.
S2 : Message passing require kernel support
S3 : Shared memory is faster than message passing mechanisms.
S4 : Shared memory are implemented with the help of system calls and continuous requires system call support for exchanging data.
Which of the statements are NOT TRUE?
Question 3
In indirect communication between Processes P and Q what do the two process have in common or what do they share
Question 4
Consider the following two concurrent processes with a shared memory variable x. Assume x is initialized to 10
The maximum possible value of x when both processes have completed __________.
Question 5
Consider the following statements
1) System calls are needed to set up shared memory between two processes.
2) A privileged instruction is needed to change the mode from privileged to non-privileged mode.
3) An ISR is invoked on completion of I/O in asynchronous I/O but not in synchronous I/O.
4) The return code for the fork system call is zero for the new process, whereas the non-zero process identifier of the child is returned to the parent.
Which of the above statements are correct?
1) System calls are needed to set up shared memory between two processes.
2) A privileged instruction is needed to change the mode from privileged to non-privileged mode.
3) An ISR is invoked on completion of I/O in asynchronous I/O but not in synchronous I/O.
4) The return code for the fork system call is zero for the new process, whereas the non-zero process identifier of the child is returned to the parent.
Which of the above statements are correct?
Question 6
Which of the following are TRUE for direct communication?
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