Which are the two types of device files in Unix?

There are two general kinds of device files in Unix-like operating systems, known as character special files and block special files.

What type of files are used to represent physical devices in Unix?

Explanation: Special Files – Used to represent a real physical device such as a printer, tape drive or terminal, used for Input/Ouput (I/O) operations. Device or special files are used for device Input/Output(I/O) on UNIX and Linux systems. They appear in a file system just like an ordinary file or a directory.

What are the two types of device files?

There are two types of device files; character and block, as well as two modes of access. Block device files are used to access block device I/O.

Which of the following contains device files for all the hardware devices on the machine?

The /dev directory
The /dev directory contains the special device files for all the devices.

How do character devices and block devices differ?

Character devices are those for which no buffering is performed, and block devices are those which are accessed through a cache. Block devices must be random access, but character devices are not required to be, though some are. Filesystems can only be mounted if they are on block devices.

What is the way the processes in Unix interact with the file systems?

Files in Unix System are organized into multi-level hierarchy structure known as a directory tree. At the very top of the file system is a directory called “root” which is represented by a “/”. All other files are “descendants” of root. / : The slash / character alone denotes the root of the filesystem tree.

Which part of the Unix operating system interacts with the hardware?

The kernel
Which part of the UNIX operating system interacts with the hardware? Explanation: The kernel is the core of the operating system. It is a collection of routines written in C which directly communicates with the hardware.

How does the device file help in accessing the device?

Device files allow user programs to access hardware devices on the system through the kernel. They are not “files” per se, but look like files from the program’s point of view: you can read from them, write to them, mmap() onto them, and so forth.

What communicates directly with the hardware in Unix?

Explanation: The kernel is the core of the operating system. It is a collection of routines written in C which directly communicates with the hardware.

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