C191 Operating Systems for Programmers Practice Questions - Set 4 - Part 1

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 1: What is the primary function of a device driver?

A) To manage system memory

B) To control hardware devices

C) To facilitate user interface

D) To schedule processes

Question 2: In an operating system, what is a "thread"?

A) A lightweight process

B) A sequence of instructions

C) A method for data encryption

D) A type of file system

Question 3: Which scheduling algorithm is designed to give all processes equal CPU time?

A) Shortest Job First (SJF)

B) Round Robin

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

D) Priority Scheduling

Question 4: What is the purpose of "context switching" in an operating system?

A) To allocate memory

B) To switch between different applications

C) To save and restore process states

D) To manage user input

Question 5: Which of the following is a characteristic of a "real-time operating system"?

A) No user interface

B) Supports multitasking

C) Guarantees a response within a specific time frame

D) Only runs on servers

Question 6: In the context of operating systems, what does "paging" refer to?

A) Dividing memory into fixed-size blocks

B) Compressing data for storage

C) Scheduling processes

D) Encrypting files

Question 7: What is the function of the "process control block" (PCB)?

A) To manage file access

B) To keep track of process execution

C) To allocate system memory

D) To handle user inputs

Question 8: What type of memory allocation is "static allocation"?

A) Memory is allocated at runtime

B) Memory is allocated during compile time

C) Memory allocation occurs in fixed-size blocks

D) Memory is allocated dynamically as needed

Question 9: Which of the following is a method of "inter-process communication" (IPC)?

A) Semaphores

B) File management

C) Memory mapping

D) All of the above

Question 10: What does the "thrashing" condition refer to in an operating system?

A) Excessive CPU usage by a process

B) Continuous swapping of processes in and out of memory

C) A failure in the disk drive

D) Overloading the network

Question 11: What is the primary purpose of a "file system"?

A) To manage CPU scheduling

B) To control hardware resources

C) To organize and store data on storage devices

D) To facilitate network communication

Question 12: In the context of networking, what does "DHCP" stand for?

A) Dynamic Host Configuration Protocol

B) Data Host Control Protocol

C) Distributed Host Control Protocol

D) Domain Host Configuration Protocol

Question 13: What is the function of a "swap space" in an operating system?

A) To store executable files

B) To temporarily hold data that cannot fit in RAM

C) To manage user permissions

D) To cache frequently accessed files

Question 14: Which of the following best describes "fork" in process management?

A) Terminating a process

B) Creating a new process

C) Merging two processes

D) Sharing resources between processes

Question 15: What is the primary advantage of using "buffering" in I/O operations?

A) To increase the speed of data encryption

B) To reduce the latency of data transfers

C) To decrease the amount of data stored

D) To improve system security

Question 16: What is the purpose of "load balancing" in a network?

A) To optimize memory usage

B) To distribute workload evenly across servers

C) To ensure data integrity

D) To prevent data loss

Question 17: Which of the following is a common example of a "blocking" system call?

A) Opening a file

B) Reading data from a file

C) Writing data to a file

D) All of the above

Question 18: In the context of file systems, what is a "directory"?

A) A single file

B) A collection of files and subdirectories

C) A special file used for system operations

D) A memory location for temporary data

Question 19: What does "data compression" achieve in an operating system?

A) Increases file size

B) Reduces storage space

C) Slows down data access

D) Increases processing time

Question 20: What is the role of "virtual memory" in an operating system?

A) It provides a physical address for memory allocation

B) It allows for more processes to run than physical RAM can support

C) It eliminates the need for caching

D) It directly manages CPU scheduling

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