Quiz Space

Operating Systems · Quiz 2 · 12 Apr 2026 · January 2026 term

Question 16: Consider a system with four processes, P1, P2, P3, and P…

Question 16

+4 marksNumerical answer

Consider a system with four processes, P1, P2, P3, and P4, arriving at different times and requiring the following CPU burst times to complete.

Assuming that the system employs the First-Come-First-Served (FCFS) scheduling algorithm, what will be the average waiting time?
Note: Enter your answer in decimal.

Show answer

Correct answer: 5.75

See the whole paperTake it as a mock test

Question 16 of 17 in the IIT Madras BS Operating Systems (Operating Systems) Quiz 2 paper sat on 12 Apr 2026, in the January 2026 term (OS 06 Apr 26). It carries 4 marks.

More questions from this paper

  1. Q1Which of the following statements are correct?
  2. Q2Select all the correct statements.
  3. Q3Choose all the correct statements regarding compiling and linking multiple C source files using gcc
  4. Q4Two processes P1 and P2 are competing for two shared R1 and R2.\ P1 holds R1 and waits for R2. • P2 holds R2 and waits …
  5. Q5Given the hexadecimal representation of the first few bytes of different files, identify the executable file (ELF file)…
  6. Q6Figure question
  7. Q7State True or False: In inter-process communication (IPC) using shared memory, the commonly used system calls are send …
  8. Q8If the exec system call is invoked as exec("/analyze", "data.txt", "config.json", "log.txt", "result.out");, then what …
  9. Q9In the following code snippet, a child process is created to execute the ls -l /home command. Identify the correct syst…
  10. Q10Match the following
  11. Q11What is a major disadvantage of the First Come First Serve (FCFS) scheduling algorithm in operating systems?
  12. Q12Which of the following statements correctly describes a key difference between the First-Come-First-Serve (FCFS) and Ro…
  13. Q13Assume that context switches can occur at any time during the execution of the following code snippet. The variable cou…
  14. Q14Consider the following code snippet from Bakery Algorithm. Considering that there are 5 processes, and initially num[0]…
  15. Q15Consider a set of 5 processes with the following arrival and burst times. If the CPU scheduling policy used is Round Ro…
  16. Q17Consider a system with four processes, P1, P2, P3, and P4, arriving at different times and requiring the following CPU …