Operating Systems - Quiz(Unit 1) Batch-I | Take the Quiz

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Operating Systems Quiz - Test Your Knowledge!

Welcome to the Operating Systems Quiz! This quiz is designed for those who want to challenge their understanding of operating systems fundamentals. Whether you are a student or a professional in the field, test your knowledge and see how well you know the ins and outs of processes, threads, and system states.

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10 multiple-choice questions
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10 Questions2 MinutesCreated by CodingWizard237

A multi-user, multi-processing operating system cannot be implemented on hardware that does not support:

Address translation

DMA for disk transfer

At least two modes of CPU execution (privileged and non-privileged

Demand Paging

Consider the following statements about process state transitions for a system using preemptive scheduling. I. A running process can move to ready state. II. A ready process can move to ready state. III. A blocked process can move to running state. IV. A blocked process can move to ready state.

I, II and III only

II and III only

I, II and IV only

I, II, III and IV

The following C program is executed on a Unix/Linux system: #include<< unistd.h > int main () { int I ; for (i=0; i<10; i++) if (i%2 == 0) fork ( ) ; return 0 ; } The total number of child processes created is ____

The following two functions P1 and P2 that share a variable B with an initial value of 2 execute concurrently. P1() { C=B-1; B=2*C; } P2(){ D=2*B; B= D-1; } The number of distinct values that B can possibly take after the execution is -------

A process having multiple threads of control implies

Only one task at a time, but much faster

More than one task at a time

Only one thread per process to use

All of the above

A thread is usually defined as a ''light weight process'' because an operating system (OS) maintains smaller data structures for a thread than for a process. In relation to this, which of the following is TRUE?

On per-thread basis, the OS maintains only CPU register state.

The OS does not maintain a separate stack for each thread.

On per-thread basis, the OS does not maintain virtual memory state.

On per-thread basis, the OS only maintains scheduling and accounting

Consider the following code fragment: if (fork() == 0) { a = a + 5; printf("%d, %d \n", a, &a); } else { a = a - 5; printf ("%d, %d \n", a, &a); } Let u,v be the values printed by the parent process, and x,y be the values printed by the child process. Which one of the following is TRUE?

U = x+10 , v = y

U = x=10, v != y

U+10 = x, v = y

U+10 = x, v !=y

Which one of the following is FALSE? a. User level threads are not scheduled by the kernel. b. When a user level thread is blocked, all other threads of its process are blocked. c. Context switching between user level threads is faster than context switching between kernel level threads. d. Kernel level threads cannot share the code segment.

Operating Systems - Quiz(Unit 1) Batch-I

Operating Systems Quiz - Test Your Knowledge!

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