New Questions 1

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

A. An error message is shown and the administrator is asked by the kernel to specify a valid root filesystem to continue the boot process.

B. An error message is shown and the system reboots after a keypress.

C. An error message is shown and the system boots in maintenance mode.

D. An error message is shown showing which device couldn't be mounted or informing that init couldn't be found.

E. An error message is shown stating that the corresponding kernel module couldn't be loaded.

New Questions 2

Which command is used to create a ISO9660 filesystem? (Specify ONLY the command without any path or parameters.)

New Questions 3

In case the file containing the Linux kernel is lost, what happens when the system is booting?

A. The system starts normally since the bootloader copies the kernel to the master boot record of the hard disk.

B. Instead of the kernel, the initramfs is loaded and instructed to mount the root filesystem and reinstall the kernel from the original package or from source.

C. The bootloader mounts the root filesystem read-only and launches /bin/sh directly in order to allow the administrator to reinstall the kernel.

D. Without a kernel a system cannot boot and, depending on the bootloader, an error is displayed.

New Questions 4

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.)

A. Edit /etc/shmmax and set the parameter to 2147483648.

B. sysctl shmmax=2147483648

C. sysctl kernel.shmmax=2147483648

D. echo 2147483648 > /proc/sys/kernel/shmmax

E. export kernel.shmmax=2147483648

New Questions 5

The main configuration file for autofs has this entry:

New Questions 6

Where would fsck put any unreferenced file or file fragments on a ext4 filesystem?

A. recover

B. lost+found

C. back

D. lost

New Questions 7

What mechanism does collectd use to gather monitoring information on systems?

A. It uses a library of plugins.

B. A master server connects to a collectd service on each machine to retrieve the information.

C. It collects its own information on each server and sends that to a master server.

D. It makes SNMP queries to the clients being monitored.

New Questions 8

What is the functionality that PXE provides?

A. The ability to boot a computer using its network interface.

B. The ability to launch an remote X11 desktop on a computer.

C. The ability to verify a system's configuration after completing the boot process.

D. The ability to verify a system's configuration before completing the boot process.

New Questions 9

Which of the following is a side effect of extensive usage of swap space?

A. The root filesystem may become full because swap space is always located on the system root partition.

B. The overall system performance may degrade because of heavy hard disk use and memory reorganization.

C. Since processes always exist completely in either RAM or swap, regular RAM may become unused if the kernel does not move processes back from the swap space to memory.

D. The memory may become fragmented and slow down the access to memory pages. However, this can be kept to a minimum by the regular use of memfrag -d.

E. Applications need to restart because their virtual memory addresses change to reflect memory relocation to the swap address area.

New Questions 10

What option in the collectd configuration file is required in order to define what to start monitoring?

A. LoadModule

B. Module

C. Plugin

D. LoadPlugin