C191 Operating Systems for Programmers Practice Questions - Set 2 - Part 2

Test your knowledge of data-driven decision making concepts with these practice questions. Each question includes detailed explanations to help you understand the correct answers.

Question 21: What is the difference between a process and a thread?

A) A process has its own memory space, while threads share memory within a process

B) Processes are faster than threads

C) Threads cannot be created without a process

D) Processes are always independent, while threads are always dependent

Question 22: Which of the following is an advantage of using threads?

A) Threads are slower to create and destroy than processes

B) Threads share the same address space, allowing for easier data sharing

C) Threads require more system resources than processes

D) Threads cannot be preempted

Question 23: What occurs during the boot process of a computer?

A) The CPU is turned off

B) The operating system is loaded into memory

C) All applications are launched

D) The hardware is disconnected

Question 24: In which scheduling algorithm does the process with the shortest burst time get executed first?

A) First-Come, First-Served (FCFS)

B) Shortest Job First (SJF)

C) Round Robin (RR)

D) Priority Scheduling

Question 25: What is the purpose of a mutex in multithreading?

A) To allow multiple threads to execute simultaneously

B) To ensure that only one thread can access a resource at a time

C) To manage process scheduling

D) To prevent deadlocks

Question 26: What is thrashing in an operating system?

A) Excessive CPU utilization

B) High disk activity due to page faults

C) Processes running indefinitely

D) Increased context switching

Question 27: Which of the following describes the "busy waiting" technique?

A) A process sleeping while waiting for a resource

B) A process actively checking for a condition to be met

C) A process yielding control to another process

D) A process terminating after reaching a certain state

Question 28: What is the main function of the file system in an operating system?

A) To manage CPU scheduling

B) To manage memory allocation

C) To manage data storage and retrieval

D) To manage process execution

Question 29: In a distributed system, what is the purpose of remote procedure calls (RPCs)?

A) To create a new thread

B) To execute processes on a remote server as if they were local

C) To manage file transfers

D) To allocate memory across different machines

Question 30: Which of the following is a benefit of using virtual memory?

A) It decreases overall system performance

B) It allows the system to run more processes than can fit in physical memory

C) It eliminates the need for a file system

D) It requires more physical memory than available

Question 31: What is the role of the kernel in an operating system?

A) To manage hardware and system resources

B) To provide user interfaces

C) To execute user applications

D) To manage network protocols

Question 32: What does the term "context switching" refer to in operating systems?

A) Switching between different operating systems

B) Switching between user and kernel mode

C) Saving and restoring the state of a CPU so that multiple processes can share a single CPU

D) Switching between different hardware devices

Question 33: What does the term "blocking I/O" mean?

A) I/O operations that do not require waiting

B) I/O operations that cause the process to be suspended until the operation is completed

C) I/O operations that can be interrupted

D) I/O operations that are executed in the background

Question 34: In operating systems, what is a "semaphore"?

A) A signaling mechanism that controls access to shared resources

B) A type of process scheduling algorithm

C) A method for handling deadlocks

D) A data structure for managing memory

Question 35: What is the purpose of a file control block (FCB)?

A) To manage memory allocation for a process

B) To provide access control for files

C) To maintain metadata about a file

D) To track process execution

Question 36: Which scheduling algorithm minimizes the average waiting time for a set of processes?

A) First-Come, First-Served (FCFS)

B) Shortest Job First (SJF)

C) Round Robin (RR)

D) Priority Scheduling

Question 37: In a deadlock situation, which condition ensures that the system remains in a safe state?

A) Mutual exclusion

B) Hold and wait

C) No preemption

D) Wait for all resources

Question 38: What is a main benefit of using RAID (Redundant Array of Independent Disks)?

A) It increases CPU performance

B) It provides data redundancy and improves fault tolerance

C) It reduces the amount of RAM required

D) It simplifies the file system

Question 39: Which of the following describes "swapping" in operating systems?

A) Moving processes from the ready queue to the running state

B) Transferring processes between main memory and disk storage

C) Switching the CPU between different processes

D) Moving threads between different states

Question 40: What is the purpose of a disk scheduler?

A) To allocate CPU time to processes

B) To manage memory allocation

C) To optimize disk I/O operations

D) To handle process synchronization

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