Design Hard Disk Layout (2)

Question 1

Which of the follow commands allow you to see your system’s memory information?

1. top
2. free
3. lsblk -f
4. swap
5. cat /sys/block
6. cat /proc/meminfo

Answer 1

1. top
2. free
3. lsblk -f
4. cat /proc/meminfo

The top, free, cat /proc/meminfo command all allow you to see your system’s memory information. The lsblk -f will show swap information, which is part of your system’s memory information as well.

Question 2

Which of the following statements are true concerning sysfs?

1. It is used by lsdev
2. Its files are accessible via /sys/
3. It is a pseudo-filesystem
4. It is mounted in RAM
5. It is mounted at /proc
6. It is used by lsblk

Answer 2

2. Its files are accessible via /sys/
3. It is a pseudo-filesystem
4. It is mounted in RAM
5. It is used by lsblk

The sysfs pseudo-filesystem is mounted in RAM, but its files are accessible through the /sys/ directory, and information in it is used by the lsblk utility.

Question 3

Which of the follow information is always displayed for a PCI connected device, when you use the lspci command?

1. slot
2. class
3. vendor
4. device
5. revision
6. programming interface

Answer 3

1. slot
2. class
3. vendor
4. device

The slot (PCI bus slot), class, vendor, and device information is always displayed for a PCI connected device, when you use the lsdev command. While revision and programming interface can be displayed, they are optional.

Question 4

Which of the follow mount points are considered to be required as the bare minimum?

1. /
2. /boot
3. swap
4. /bin
5. /sbin
   Overall explanation
   The fewest places where you should have filesystems mounted (mount points) on a Linux system is / (root) and /boot (boot), but typically you’ll see root, boot, and swap.

Answer 4

1. / AND 2. /boot

The fewest places where you should have filesystems mounted (mount points) on a Linux system is / (root) and /boot (boot), but typically you’ll see root, boot, and swap.