Sesion 1 Curso LPIC 2023

Which command is used to automatically load a module and its dependencies?

• modprobe

• lsmod

• insmod

• modinst

El FS / (a)   / contiene los archivos de dispositivos especiales para todos los dispositivos hardware.

Which command is used to obtain a list of USB devices?

• usbls

• lspci | grep usb

• lsusb

• ls --usb

El sistema de archivos / (a)   / contiene un sistema de archivos imaginario o virtual. El núcleo lo crea en memoria. Se utiliza para ofrecer información relacionada con el sistema.

Which command can be used to obtain a list of currently loaded kernel modules?

• insmod

• modlist

• lsmodules

• lsmod

Answer explanation

The lsmod command is used to list currently loaded kernel modules

The / (a)   / filesystem is the location where information about devices, drivers, and some kernel features is exposed

Which command can be used to view the kernel ring buffer in order to troubleshoot the boot process?

• /var/log/kern.log

• dmesg

• systemctl

• journalctl -u

Answer explanation

The dmesg command displays the contents of the kernel ring buffer. On many Linux distributions, this log is also saved to /var/log/dmesg. The other options shown for this question are not valid commands

The _ key, when is pressed during the operating system selection menu, is used to enable editing of the parameters related to boot with GRUB

(a)  

Answer explanation

The e key, when pressed at the right time during boot, will send you into the GRUB shell, where you can change parameters related to boot, such as the kernel options and other related parameters.

EL (a)   es un proceso de verificación e inicialización de los componentes de entrada y salida en un sistema computacional que se encarga de configurar y diagnosticar el estado del hardware.

El initrd/initramfs se carga inicialmente en:

• CPU

• Memoria

• Disco

• Kernel