Hardware

Question 1

IO Port

Answer 1

An address or range of addresses, identify a device

Question 2

Interrupt Request (IRQ)

Answer 2

Signals the processor that an event has happened and the CPU is requested to come check on the resource

Question 3

Direct Memory Access (DMA)

Answer 3

Allows a peripheral to access system memory directly instead of going through the CPU

Question 4

procfs

Answer 4

Contains details about the hardware in the system (kernel information) also called pseudofilesystem

Question 5

Which files can show alot of pertinent information about the system’s configuration

Answer 5

/proc/ioports
/proc/dma
/proc/interrupts

Question 6

Which commands allow you to view errors or conflicts within the /proc directory

Answer 6

cat /proc/interrupts
cat /proc/ioports
cat /proc/dma
cat /proc/usb
cat /proc/pci

Question 7

lsmod

Answer 7

Shows the kernel modules loaded, along with any dependencies for those modules (Helpful for checking if the driver is loaded for a peripheral)

Question 8

modprobe

Answer 8

loads a module

Question 9

lscpu

Answer 9

provides details about your CPU, such as the # and speed of ea. socket and core

Question 10

lspci

Answer 10

shows information about pci bus and devices. Identify devices on the bus that the kernel doesn’t know about and provides addressing info for configuring them

Question 11

lsscsi

Answer 11

Shows info about scsi devices on the system

Question 12

lsdev

Answer 12

shows devices recognized by the system (shows the most definitive)

Question 13

lsraid

Answer 13

displays the RAID devices on the system

Question 14

lsusb

Answer 14

displays usb info and devices

Question 15

lsblk

Answer 15

displays block devices