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Recent questions tagged process

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Operating System(Process)
A process executes the following segment of code: int main(){ fork(); fork() && fork(); } The number of new processes created is

Sourin Kundu asked in Operating System Jan 24

by Sourin Kundu

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Multi Level Feedback Queue(UNIX-SVR3)
Consider the following set of processes, and schedule them using the Multi-levelf eedback queue CPU scheduling algorithm as used in UNIX SVR3. P's CB AT Base Priority P1 2 0 60 P2 1. 1 60 P3 3. 2 60 Also prepare a gantt chart for the following..

rdxrohit asked in Operating System Dec 31, 2022

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Best Open Video Playlist for Processes Topic | Operating Systems
Please list out the best free available video playlist for Processes from Operating Systems as an answer here (only one playlist per answer). We'll then select the best playlist and add to GO classroom video lists. You can ... standard ones are more likely to be selected as best. For the full list of selected videos please see here

makhdoom ghaya asked in Study Resources Aug 20, 2022

by makhdoom ghaya

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#fork #threads
Consider the following program segment of C-programming language: #include<stdio.h> int main() { if (fork() || fork()) fork(); printf("GATE\n"); return 0; } Number of times the above program prints 'GATE' is_?

jayadev asked in Operating System Feb 1, 2022

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Applied Mock Test
A uniprocessor computer system has three processes, which alternate 20ms CPU bursts with 80ms I/O bursts. All the processes were created at nearly the same time. The I/O of all the processes can proceed in parallel. The absolute difference of CPU utilization (over a long period of time) using FCFS and Round Robin (time quantum 10ms) for this system is _____ %

LRU asked in Operating System Dec 14, 2021

by LRU

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1 answer

6

#threads
Why the operating system has the knowledge about kernel level threads but not about user level threads?

jayadev asked in Operating System Dec 7, 2021

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7

#threads
Does kernel level threads have separate PCB(process control block)?

jayadev asked in Operating System Dec 6, 2021

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Andrew S. Tanenbaum (OS) Edition 4 Exercise 2 Question 41 (Page No. 177)
Can a measure of whether a process is likely to be CPU bound or I/O bound be determined by analyzing source code? How can this be determined at run time?

Lakshman Bhaiya asked in Operating System Oct 25, 2019

by Lakshman Bhaiya

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2 answers

9

Self Doubt Process State
For a process the termination state lies in which memory? Main or Secondary memory?

shubhojit1412 asked in Operating System Jun 7, 2019

by shubhojit1412

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1 answer

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Stallings Book Doubt-Process
Which part of the process image forms the logical address space that is used in paging?

aditi19 asked in Operating System May 26, 2019

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self doubt - process concepts
Consider we have a cpu whose processes are scheduled using premptive priority scheduling algorithm, suppose a process of higher priority than the currently running process arrives in the ready queue, according to the algorithm the running process must be prempted, who actually does this job of interrupting the running process?

Saideepak Bejawada asked in Operating System Apr 9, 2019

by Saideepak Bejawada

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Galvin Edition 9 Exercise 3 Question 18 (Page No. 153)
What are the benefits and the disadvantages of each of the following ? Consider both the system level and the programmer level. a. Synchronous and asynchronous communication b. Automatic and explicit buffering c. Send by copy and send by reference d. Fixed-sized and variable-sized messages

akash.dinkar12 asked in Operating System Mar 19, 2019

by akash.dinkar12

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Galvin Edition 9 Exercise 3 Question 17 (Page No. 153)
Using the program shown below, explain what the output will be at lines X and Y. #include <sys/types.h> #include <stdio.h> #include <unistd.h> #define SIZE 5 int nums[SIZE] = {0,1,2,3,4}; int main() { int i; pid t pid; pid = fork( ... (i = 0; i < SIZE; i++) printf("PARENT: %d ",nums[i]); /* LINE Y */ } return 0; }

akash.dinkar12 asked in Operating System Mar 19, 2019

by akash.dinkar12

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Galvin Edition 9 Exercise 3 Question 16 (Page No. 153)
Consider the RPC mechanism. Describe the undesirable consequences that could arise from not enforcing either the “at most once” or “exactly once” semantic. Describe possible uses for a mechanism that has neither of these guarantees.

akash.dinkar12 asked in Operating System Mar 19, 2019

by akash.dinkar12

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15

Galvin Edition 9 Exercise 3 Question 15 (Page No. 153)
Give an example of a situation in which ordinary pipes are more suitable than named pipes and an example of a situation in which named pipes are more suitable than ordinary pipes.

akash.dinkar12 asked in Operating System Mar 19, 2019

by akash.dinkar12

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16

Galvin Edition 9 Exercise 3 Question 14 (Page No. 152)
Using the program in Figure 3.34, identify the values of pid at lines A, B, C, and D. (Assume that the actual pids of the parent and child are 2600 and 2603, respectively.) #include <sys/types.h> #include <stdio.h> #include <unistd. ... pid); /* C */ printf("parent: pid1 = %d",pid1); /* D */ wait(NULL); } return 0; }

akash.dinkar12 asked in Operating System Mar 19, 2019

by akash.dinkar12

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1 answer

17

Galvin Edition 9 Exercise 3 Question 13 (Page No. 152)
Explain the circumstances under which which the line of code marked printf("LINE J") in following program will be reached. #include <sys/types.h> #include <stdio.h> #include <unistd.h> int main() { pid t pid ... will wait for the child to complete */ wait(NULL); printf("Child Complete"); } return 0; }

akash.dinkar12 asked in Operating System Mar 19, 2019

by akash.dinkar12

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1 answer

18

Galvin Edition 9 Exercise 3 Question 12 (Page No. 152)
Including the initial parent process, how many processes are created by the program shown below- #include <stdio.h> #include <unistd.h> int main() { int i; for (i = 0; i < 4; i++) fork(); return 0; }

akash.dinkar12 asked in Operating System Mar 19, 2019

by akash.dinkar12

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19

Galvin Edition 9 Exercise 3 Question 11 (Page No. 152)
Explain the role of the init process on UNIX and Linux systems in regard to process termination.

akash.dinkar12 asked in Operating System Mar 19, 2019

by akash.dinkar12

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20

Galvin Edition 9 Exercise 3 Question 10 (Page No. 151-152)
Construct a process tree similar to Figure 3.8. To obtain process information for the UNIX or Linux system, use the command ps -ael.Use the command man ps to get more information about the ps command.The task manager ... the parent process ID, but the process monitor tool, available from technet.microsoft.com, provides a process-tree tool.

akash.dinkar12 asked in Operating System Mar 19, 2019

by akash.dinkar12

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1 answer

21

Galvin Edition 9 Exercise 3 Question 9 (Page No. 151)
Describe the actions taken by a kernel to context-switch between processes.

akash.dinkar12 asked in Operating System Mar 19, 2019

by akash.dinkar12

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1 answer

22

Galvin Edition 9 Exercise 3 Question 8 (Page No. 151)
Describe the differences among short-term, medium-term, and long term scheduling.

akash.dinkar12 asked in Operating System Mar 19, 2019

by akash.dinkar12

287 views

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23

Galvin Edition 9 Exercise 3 Question 7 (Page No. 150)
Assume that a distributed system is susceptible to server failure. What mechanisms would be required to guarantee the “exactly once” semantic for execution of RPCs?

akash.dinkar12 asked in Operating System Mar 19, 2019

by akash.dinkar12

275 views

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24

Galvin Edition 9 Exercise 3 Question 6 (Page No. 150)
Consider the “exactly once”semantic with respect to the RPC mechanism. Does the algorithm for implementing this semantic execute correctly even if the ACK message sent back to the client is lost due to a network problem? Describe the sequence of messages, and discuss whether “exactly once” is still preserved.

akash.dinkar12 asked in Operating System Mar 19, 2019

by akash.dinkar12

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25

Galvin Edition 9 Exercise 3 Question 5 (Page No. 150)
When a process creates a new process using the fork() operation, which of the following states is shared between the parent process and the child process ? a. Stack b. Heap c. Shared memory segments

akash.dinkar12 asked in Operating System Mar 19, 2019

by akash.dinkar12

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26

Galvin Edition 9 Exercise 3 Question 4 (Page No. 150)
The Sun UltraSPARC processor has multiple register sets. Describe what happens when a context switch occurs if the new context is already loaded into one of the register sets. What happens if the new context is in memory rather than in a register set and all the register sets are in use ?

akash.dinkar12 asked in Operating System Mar 19, 2019

by akash.dinkar12

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27

Galvin Edition 9 Exercise 3 Question 3 (Page No. 150)
Original versions of Apple’s mobile iOS operating system provided no means of concurrent processing. Discuss three major complications that concurrent processing adds to an operating system.

akash.dinkar12 asked in Operating System Mar 19, 2019

by akash.dinkar12

269 views

1 vote

1 answer

28

Galvin Edition 9 Exercise 3 Question 2 (Page No. 149-150)
Including the initial parent process, how many processes are created by the following program. #include <stdio.h> #include <unistd.h> int main() { fork(); fork(); fork(); return 0; }

akash.dinkar12 asked in Operating System Mar 19, 2019

by akash.dinkar12

273 views

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1 answer

29

Galvin Edition 9 Exercise 3 Question 1 (Page No. 149)
#include <sys/types.h> #include <stdio.h> #include <unistd.h> int value = 5; int main() { pid t pid; pid = fork(); if (pid == 0) { /* child process */ value += 15; return 0; } else if (pid > 0) { /* ... ;PARENT: value = %d",value); /* LINE A */ return 0; } } Explain what the output will be at LINE A in this program.

akash.dinkar12 asked in Operating System Mar 19, 2019

by akash.dinkar12

743 views

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Recent questions tagged process