Q53.Marks: +2.0UGC NET Paper 2: Computer Science and Application 26th June 2025 Shift 1
Which of the followings shows the correct hierarchy of a layered file system in an operating system
A. Logical File System
B. File Organization Module
C. Basic File System
D. I/O Control
E. Application Programs
Choose the correct answer from the options given below:
1.A→B→D→C→E
2.D→E→C→A→B
3.E→A→B→C→D✓ Correct
4.E→C→B→A→D
Solution
Correct Answer: Option 3: E → A → B → C → D
The hierarchy of a layered file system in an operating system is organized as follows:
E: Application Programs: These are the user-level programs that interact with the file system to perform operations like reading, writing, or modifying files. They are the topmost layer.
A: Logical File System: This layer manages metadata, file names, and directories. It provides the interface for file operations and ensures logical organization.
B: File Organization Module: This module handles the organization of files and directories within the storage medium. It manages the structure and placement of data on the disk.
C: Basic File System: This layer is responsible for reading and writing blocks of data to and from the physical storage medium. It provides a basic interface for accessing data.
D: I/O Control: This is the lowest layer, responsible for interfacing with hardware devices like disk controllers and handling device-specific operations.
Hence, the correct hierarchy is:
E → A → B → C → D
Key Points
The layered file system structure ensures modularity, making it easier to debug and maintain.
Each layer has a distinct responsibility and interacts with the layer above and below it.
Additional Information
The Logical File System is responsible for maintaining consistency, such as ensuring file permissions and access control.
The I/O Control layer interacts directly with hardware and is critical for physical data transfer.
Hence, the correct answer is:Option 3: E → A → B → C → D
