Which statement is true about udev?
A.
it is static kernel device naming scheme based ondevfs.
B.
it prevents device renaming upon reboot by default.
C.
Theudevconfiguration file is/etc/udev.conf.
D.
it is a dynamic kernel device naming scheme based onsysfs.
Explanation:
udev expects its main configuration file at /etc/udev/udev.conf. The file consists of a set of variable sand values allowing the user to override default udev values.
i believe that C is wrong so D should be correct but I’am not 100% sure
D
devfs is an obsolete and no longer available virtual filesystem that
automatically generated the contents of /dev on some older versions of the
Linux kernel. These days, it has been replaced by udev, a daemon that
manages the contents of /dev in a temporary filesystem, or devtmpfs, a
lightweight replacement for devfs used in some minimal systems.
udev stores configuration files under /etc/udev/*
The udev device manager dynamically creates or removes device node files at
boot time or if you add a device to or remove a device from the system with
a 2.6 version kernel or later. When creating a device node, udev reads the
device’s /sys directory for attributes such as the label, serial number, and
bus device number.