Question 1

Which commands below are useful to collect data about remote filesystem connections? (Choose TWO correct answers.)

Accepted Answer

Correct answer: BD

Question 2

Which of the following commands will provide the PIDs of the processes sorted by which are using the most CPU cycles on the Linux system?

Accepted Answer

Correct answer: A

Question 3

In the below example output, which columns detail the percent of time the CPU spent running non-kernel code and the percent of time the CPU spent running
kernel code? (Choose TWO correct answers.)
# vmstat 1 100
procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
0 0 0 282120 134108 5797012 0 0 0 2 0 0 0 0 100 0
0 0 0 282120 134108 5797012 0 0 0 0 1007 359 0 0 100 0
0 0 0 282120 134108 5797012 0 0 0 0 1117 577 0 0 100 0
0 0 0 282120 134108 5797012 0 0 0 0 1007 366 0 0 100 0

Accepted Answer

Correct answer: BD

Question 4

A database application requires a maximum shared memory segment (shmmax) of 2GB (2147483648 Bytes). Which configuration file should be modified to set
this kernel parameter permanently? (Specify the full name of the file, including path.)

Accepted Answer

/etc/sysctl.conf

Question 5

Which directory contains the system-specific udev rule files? (Specify the absolute path including the directory name)

Accepted Answer

/etc/udev/rules.d, /etc/udev/rules.d/

Question 6

How can the kernel parameter for the maximum size of the shared memory segment (shmmax) be changed to 2GB (2147483648 Bytes) on a running system?
(Choose TWO correct answers.)

Accepted Answer

Correct answer: CD

Question 7

What happens if the Linux kernel can't mount the root filesystem when booting?

Accepted Answer

Correct answer: D

Question 8

What is the meaning of the /etc/auto.home file?

Accepted Answer

54. What is the purpose of the smartd daemon?
A. It is a user space daemon used for reading smart cards and integrated circuit chips.
B. It attempts to automatically repair file systems upon a failed file system check.
C. It monitors process activity and helps the kernel decide which processes to kill when the kernel overcommits.
D. It monitors certain disk drives and attempts to predict when they will fail.

Question 9

Which files are updated as devices are mounted and unmounted to provide information on the currently
mounted devices and the options used? (Choose TWO correct answers.)

Accepted Answer

Correct answer: BD

Question 10

Which directory in /dev/disk/ can be used to determine the UUID of a connected hard disk?

Accepted Answer

/dev/disk/by-uuid, by-uuid, /dev/disk/by-uuid/