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Replies to This Discussion

yar koe to subjective upload kro

Kal hum paper da ka ayn gaa firr kraa gaa yaa loggg


 Reply by Irfan Khan MSCS on Sunday on virtulians....

What is process synchronization? give an example
What is indefinite blocking and which technique can be used to resolve this issue.
Critical section ki definition given ti aur batana ta k whether u r agree with it or not.
Resource sharing is the advantage or disadvantage of thread? explain with strong arguments.

thankxx bhaii

MY paper CS 604 on 23-12-2015

Mcq almost 97% from moaaz file.
Qno.21- Which scheduling algorithm is best according to waiting time criteria? (2)
Qno.21- Give two real life examples of critical section ? (2)
ANS: (p.no 97)
Qno.21- Give three reasons of mknod() call failure ? (3)
ANS: p.no 57)
Qno.21- write term which is best for true concurrency (3)
Qno.21- Separate primitive and non-primitive of the following? (5)
6)-Multilevel Ques Sheduling.
7)-Multilevel Feedback Ques Sheduling.
Qno.21- Requirements for Critical sections? (5)
ANS: p.no 98

Today My paper
how it can be converted from non preemptive to preemptive algorithm

shortcoming of TestAndSet instruction

N-process critical section problem , which variable is shared semaphore and how it is initialized

how to resume process from back ground write syntax

V Scheduling decreasing order of priority wise of following
swapper, i/o black, user prcess, file manipulation i/o device

which OS is fully aware if it create and mapping methods, name and examples.

good luckzzz

+ Fiiinder++  thanks 

Dani! share kro ... kdr tera ppr  ???

  1. Consider the resource shearing feature of the threads; what do you think that ‘resource shearing’ is an advantage of the thread or disadvantage of a thread.
  2. The mknod() system call may failed due to different reasons. You are required to identify at least three failures scenario in which mknod() system calls fails to execute.
  3. Hardware solution to critical section involves use of swap instruction. Write the code that specifies implementation of mutual exclusion using swap instruction.
  4. Which term is best suited for a situation in which a person is in its critical section, any other process that tries to enter its critical section must loop continuously in the entry code.
  5. Write the command in UNIX to Display the stats of process.
  6. There are five processes given below with their run time units. Assume that all processes arrived in order at time P1 = 0   P2 =4   P3 = 2   P4 = 5   P5 = 0, then answer the question given below.











 Show the scheduling order for the processes and First Come First Serve, Shortest Remaining Job First, Rounded Robin Scheduling (Quantum 4).

mcq's thien moaz file se pr read the book q k sb mcq's nhi thien past papers se..scheduling order se mujhay kuch nhi aya tha pr prepare kia tha mene..though not so tough at all..prepare kr k jaiye ga sb..and read the book thoroughly..Overall paper was very easy..

All the best.. :)

Cs604 MCQ's



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