Device Management in Operating Systems - 30 MCQs
1. What is device management in an operating system?
A) Managing user accounts
B) Managing hardware devices
C) Managing memory allocation
D) None of the above
Answer: B
A) Managing user accounts
B) Managing hardware devices
C) Managing memory allocation
D) None of the above
Answer: B
2. What is a device driver?
A) A hardware component
B) Software that communicates with hardware
C) A type of operating system
D) None of the above
Answer: B
A) A hardware component
B) Software that communicates with hardware
C) A type of operating system
D) None of the above
Answer: B
3. Which of the following is NOT a function of device management?
A) Device allocation
B) Device deallocation
C) Process scheduling
D) Device monitoring
Answer: C
A) Device allocation
B) Device deallocation
C) Process scheduling
D) Device monitoring
Answer: C
4. What is the purpose of buffering in device management?
A) To reduce the speed of data transfer
B) To manage multiple processes
C) To temporarily store data during transfer
D) None of the above
Answer: C
A) To reduce the speed of data transfer
B) To manage multiple processes
C) To temporarily store data during transfer
D) None of the above
Answer: C
5. Which scheduling algorithm is commonly used for managing I/O devices?
A) Shortest Job First
B) Round Robin
C) First-Come, First-Served
D) Multilevel Queue
Answer: C
A) Shortest Job First
B) Round Robin
C) First-Come, First-Served
D) Multilevel Queue
Answer: C
6. What does DMA stand for?
A) Direct Memory Access
B) Data Management Application
C) Device Memory Allocation
D) None of the above
Answer: A
A) Direct Memory Access
B) Data Management Application
C) Device Memory Allocation
D) None of the above
Answer: A
7. Which of the following is an advantage of using device drivers?
A) Increased complexity
B) Improved performance
C) Simplified hardware communication
D) All of the above
Answer: C
A) Increased complexity
B) Improved performance
C) Simplified hardware communication
D) All of the above
Answer: C
8. What is spooling in the context of device management?
A) Storing data for future use
B) Simultaneous processing of multiple tasks
C) Buffering data to be sent to a device
D) None of the above
Answer: C
A) Storing data for future use
B) Simultaneous processing of multiple tasks
C) Buffering data to be sent to a device
D) None of the above
Answer: C
9. What is the role of the I/O controller?
A) Manages CPU scheduling
B) Facilitates communication between the OS and devices
C) Allocates memory
D) None of the above
Answer: B
A) Manages CPU scheduling
B) Facilitates communication between the OS and devices
C) Allocates memory
D) None of the above
Answer: B
10. What type of devices are considered input devices?
A) Printers
B) Scanners
C) Monitors
D) All of the above
Answer: B
A) Printers
B) Scanners
C) Monitors
D) All of the above
Answer: B
11. What is a "virtual device"?
A) A device that doesn't exist physically
B) A software simulation of a hardware device
C) Both A and B
D) None of the above
Answer: C
A) A device that doesn't exist physically
B) A software simulation of a hardware device
C) Both A and B
D) None of the above
Answer: C
12. What does the term "device allocation" refer to?
A) Assigning specific devices to processes
B) Allocating memory
C) Distributing software applications
D) None of the above
Answer: A
A) Assigning specific devices to processes
B) Allocating memory
C) Distributing software applications
D) None of the above
Answer: A
13. Which of the following is a primary function of the OS in device management?
A) File management
B) Resource allocation
C) Process scheduling
D) None of the above
Answer: B
A) File management
B) Resource allocation
C) Process scheduling
D) None of the above
Answer: B
14. What is the function of device deallocation?
A) Releasing devices when they are no longer needed
B) Allocating devices to new processes
C) Monitoring device performance
D) None of the above
Answer: A
A) Releasing devices when they are no longer needed
B) Allocating devices to new processes
C) Monitoring device performance
D) None of the above
Answer: A
15. Which of the following devices uses polling for management?
A) Hard disk drives
B) Network cards
C) Printers
D) All of the above
Answer: D
A) Hard disk drives
B) Network cards
C) Printers
D) All of the above
Answer: D
16. What is the purpose of device management in an operating system?
A) To manage system memory
B) To manage data storage
C) To provide an interface between hardware and software
D) None of the above
Answer: C
A) To manage system memory
B) To manage data storage
C) To provide an interface between hardware and software
D) None of the above
Answer: C
17. What is the main advantage of Direct Memory Access (DMA)?
A) Increases CPU workload
B) Reduces data transfer speed
C) Allows peripherals to transfer data without CPU intervention
D) None of the above
Answer: C
A) Increases CPU workload
B) Reduces data transfer speed
C) Allows peripherals to transfer data without CPU intervention
D) None of the above
Answer: C
18. What is an interrupt?
A) A signal from a device that needs attention
B) A process termination signal
C) A method of memory allocation
D) None of the above
Answer: A
A) A signal from a device that needs attention
B) A process termination signal
C) A method of memory allocation
D) None of the above
Answer: A
19. What is the function of the buffer?
A) To temporarily store data before it is sent to the device
B) To manage process states
C) To allocate system resources
D) None of the above
Answer: A
A) To temporarily store data before it is sent to the device
B) To manage process states
C) To allocate system resources
D) None of the above
Answer: A
20. Which of the following is NOT a type of device?
A) Input device
B) Output device
C) Processing device
D) Storage device
Answer: C
A) Input device
B) Output device
C) Processing device
D) Storage device
Answer: C
21. What is the primary purpose of a device manager in an OS?
A) To manage user accounts
B) To handle device I/O operations
C) To allocate system resources
D) None of the above
Answer: B
A) To manage user accounts
B) To handle device I/O operations
C) To allocate system resources
D) None of the above
Answer: B
22. How does an operating system identify devices?
A) By using a unique identifier
B) By device type
C) By device manufacturer
D) None of the above
Answer: A
A) By using a unique identifier
B) By device type
C) By device manufacturer
D) None of the above
Answer: A
23. What type of storage device is typically slower?
A) SSD
B) HDD
C) RAM
D) Cache
Answer: B
A) SSD
B) HDD
C) RAM
D) Cache
Answer: B
24. What is a common challenge in device management?
A) Hardware compatibility
B) Device performance
C) Security vulnerabilities
D) All of the above
Answer: D
A) Hardware compatibility
B) Device performance
C) Security vulnerabilities
D) All of the above
Answer: D
25. Which of the following is an example of an output device?
A) Keyboard
B) Monitor
C) Scanner
D) None of the above
Answer: B
A) Keyboard
B) Monitor
C) Scanner
D) None of the above
Answer: B
26. What does the term "hot swapping" refer to?
A) Changing devices without shutting down the system
B) Increasing device performance
C) Allocating more memory
D) None of the above
Answer: A
A) Changing devices without shutting down the system
B) Increasing device performance
C) Allocating more memory
D) None of the above
Answer: A
27. Which of the following describes a "block device"?
A) A device that reads data in fixed-size blocks
B) A device that transfers data one byte at a time
C) A device used for input only
D) None of the above
Answer: A
A) A device that reads data in fixed-size blocks
B) A device that transfers data one byte at a time
C) A device used for input only
D) None of the above
Answer: A
28. What is the main disadvantage of polling?
A) It is efficient
B) It consumes CPU resources unnecessarily
C) It is easy to implement
D) None of the above
Answer: B
A) It is efficient
B) It consumes CPU resources unnecessarily
C) It is easy to implement
D) None of the above
Answer: B
29. What is the purpose of a device queue?
A) To manage memory allocation
B) To store processes waiting for device access
C) To handle process scheduling
D) None of the above
Answer: B
A) To manage memory allocation
B) To store processes waiting for device access
C) To handle process scheduling
D) None of the above
Answer: B
30. Which of the following is a benefit of using shared devices?
A) Increased resource utilization
B) Reduced performance
C) Increased complexity
D) None of the above
Answer: A
A) Increased resource utilization
B) Reduced performance
C) Increased complexity
D) None of the above
Answer: A
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