Question: The operating system keeps a table, called the <strong>_______</strong>, containing information about all open files.
Answer:
When a file operation is requested, the file is specified via an index into this table, so no searching is required.
When the file is no longer being actively used, it is closed by the process, and the operating system removes its entry from the open-file table. Typically, the operating system uses two levels of internal tables: a per-process table and a system-wide table. The per-process table tracks all files that a process has open. Stored in this table is information regarding the process’s use of the file.
MCQ: The operating system keeps a table, called the <strong>_______</strong>, containing information about all open files.
Explanation:
When a file operation is requested, the file is specified via an index into this table, so no searching is required.
When the file is no longer being actively used, it is closed by the process, and the operating system removes its entry from the open-file table. Typically, the operating system uses two levels of internal tables: a per-process table and a system-wide table. The per-process table tracks all files that a process has open. Stored in this table is information regarding the process’s use of the file.
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Related Questions
- 1. The _______________needed to locate the file on disk is kept in memory so that the system does not have to read it from disk for each operation.
- 2. This ________ is stored on the per-process table so the operating system can allow or deny subsequent I/O requests.
- 3. ______ tracks the number of opens and closes and reaches zero on the last close.The system can then remove the entry.
- 4. ______ is unique to each process operating on the file and therefore must be kept separate from the on-disk file attributes.
- 5. A <strong>_____ </strong>is akin to a reader lock in that several processes can acquire the lock concurrently.
- 6. An <strong>__________ </strong>behaves like a writer lock;only one process at a time can acquire such a lock.
- 7. If a lock is ______, then once a process acquires an exclusive lock, the operating system will prevent any other process from accessing the locked file
- 8. The system uses the _______ to indicate the type of the file and the type of operations that can be done on that file.
- 9. A file with extension______ is the binary executable file.
- 10. Which of the following file with extension ______is the binary executable file?
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