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Questions and Answers
What role do inodes play in the UNIX/Linux file system?
What role do inodes play in the UNIX/Linux file system?
- They store the actual content of the files.
- They contain metadata about files, such as ownership and permissions. (correct)
- They manage the allocation of disk blocks for the file system.
- They represent the physical storage location of files.
Which statement correctly describes the buffer cache in UNIX/Linux systems?
Which statement correctly describes the buffer cache in UNIX/Linux systems?
- It only affects read operations and has no impact on write operations.
- It always guarantees data integrity by preventing data loss.
- It is a portion of memory that temporarily stores disk blocks. (correct)
- It directly writes data to the storage device without any delay.
What is the purpose of process states in UNIX/Linux operating systems?
What is the purpose of process states in UNIX/Linux operating systems?
- To manage resource allocation for each active application.
- To monitor network traffic and manage connections.
- To optimize user interface responsiveness.
- To define the lifecycle of a process from creation to termination. (correct)
Which of the following best describes the function of buffer headers in UNIX/Linux?
Which of the following best describes the function of buffer headers in UNIX/Linux?
What transition occurs when a process calls sleep in UNIX/Linux?
What transition occurs when a process calls sleep in UNIX/Linux?
Flashcards
File System
File System
A hierarchical structure that organizes and manages files on a storage device.
Buffer Cache
Buffer Cache
A memory area that stores frequently accessed disk data to speed up read/write operations.
Inode
Inode
A data structure that stores metadata about a file, such as its size and location.
Process State
Process State
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Process Context
Process Context
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Study Notes
System Structure
- UNIX/Linux systems have a specific architecture.
UNIX Operating System Architecture
- The structure of the UNIX operating system is a key component.
System Concepts
- The file subsystem is a crucial part of the system.
- Processes are fundamental units of work.
- Context of a process describes its state and environment.
- Process states define the current status, e.g., running, ready, blocked.
- State transitions show changes in process status.
- Processes can sleep (wait) and wake up (become ready).
File Subsystem
Files and File System
- Files and their organization within the file system are a central concern.
Buffer Cache
- Buffer headers are used to manage cached data.
- The buffer pool stores blocks read from disk.
- Buffer retrieval scenarios exist for different needs.
- Reading and writing disk blocks are key functions.
- The buffer cache has advantages (e.g., fast access) and disadvantages (e.g., potential memory use).
Internal Representation of Files
- Inodes store metadata and location information about files.
- Regular files have a specific structure.
- Directories have a defined internal representation.
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