What criteria should be used to decide which strategy contiguous linked indexed allocation is best utilized for a particular file?

What criteria should be used in deciding which strategy is best utilized for a particular file? Answer: � Contiguous – if file is usually accessed sequentially, if file is relatively small. � Linked – if file is large and usually accessed sequentially. � Indexed – if file is large and usually accessed randomly.

What problems could occur if a system allowed a file system to be Mountedsimultaneously at more than one location?

11.2 What problems could occur if a system allowed a file system to be mounted simultaneously at more than one location? Answer: There would be multiple paths to the same file, which could confuse users or encourage mistakes (deleting a file with one path deletes the file in all the other paths).

In which type of allocation method each file occupy a set of contiguous block on the disk?

8. In which type of allocation method each file occupy a set of contiguous block on the disk? Explanation: None.

What are the problems for contiguous file allocation?

Disadvantages: Contiguous allocation method suffers internal as well as external fragmentation. In terms of memory utilization, this method is inefficient. It is difficult to increase the file size because it depends on the availability of contiguous memory.

What is contiguous allocation in operating system?

1. Contiguous Memory Allocation : Contiguous memory allocation is basically a method in which a single contiguous section/part of memory is allocated to a process or file needing it. The main memory is a combination of two main portions- one for the operating system and other for the user program.

What are the advantages of contiguous allocation?

The advantage of contiguous memory allocation is it increases the processing speed. As the operating system uses the buffered I/O and reads the process memory blocks consecutively it reduces the head movements. This speed ups the processing.

Why do all file systems suffer from internal fragmentation?

Internal fragmentation occurs because each file is stored into one sector regardless of its size so then there is a lot of wasted space if you store small files. Essentially there is no way to “combine the holes” in order to save memory and allocate space for a file.

What happens in contiguous memory allocation?

In the Contiguous Memory Allocation, each process is contained in a single contiguous section of memory. In this memory allocation, all the available memory space remains together in one place which implies that the freely available memory partitions are not spread over here and there across the whole memory space.

Which of the following system call is used for opening or creating a file?

open system call
Which of the following system call is used for opening or creating a file? Explanation: To read or write to a file, we first need to open it. For this purpose, open system call is used. Open has two forms ; the first forms assumes that the file already exists and the second form creates the file if it doesn’t.

What is operating system Mcq?

What is an operating system? Explanation: An Operating System acts as an intermediary between user/user applications/application programs and hardware. It is a program that manages hardware resources. It provides services to application programs.

What is linked allocation in operating system?

In linked allocation, each file is a linked list of disk blocks. The directory contains a pointer to the first and optionally the last block of the file. With linked allocation, each directory entry has a pointer to the first disk block of the file.

What are the different strategies that can be used in contiguous memory allocation?

Dynamic partitioning and Static partitioning are the two contiguous memory allocation techniques.