Top Updated 201-450 exam engine Reviews!

New Questions 3

The users of the local network complain that name resolution is not fast enough. Enter the command, without the path or any options, that shows the time taken to resolve a DNS query.

New Questions 4

Which of the following commands displays the physical path of the kernel module named dummy?

A. modprobe u2013i dummy

B. modinfo u2013n dummy

C. modpath u2013v dummy

D. depmod u2013n dummy

E. modshow u2013p dummy

New Questions 5

Which of the following commands creates a Btrfs subvolume named volume in/mnt?

A. btrfs subvolume add u2013n volume /mnt

B. btrfs create subvolume /mnt volume

C. btrfs-subvolume create /mnt/volume

D. btrfs subvolume new volume /mnt

E. btrfs subvolume create /mnt/volume

New Questions 6

What action should be performed after increasing the size of a logical volume?

A. Run vgresize.

B. Increase the size of the filesystem used for the logical volume.

C. Run lvresize.

D. Remount the logical volume.

New Questions 7

A Linux server running systemd booted to rescue.target for maintenance. Which commands are used to restore the server to its usual target? (Choose two.)

A. telinit 0

B. systemctl default

C. sync

D. systemctl emergency

E. systemctl reboot

New Questions 8

A correctly formatted entry has been added to /etc/hosts.deny to prevent certain clients from connecting to a service but this is having no effect. What could be the cause of this? (Choose TWO correct answers.)

A. tcpd needs to be sent the HUP signal.

B. The service needs to be restarted.

C. The machine needs to be restarted.

D. There is a conflicting entry in /etc/hosts.allow.

E. The service does not support tcpwrapper.

New Questions 9

Which single command will simulate a failed device within a RAID 5 array?

A. mdadm --remove /dev/md0 /dev/sdd1

B. mdadm --zero-superblock /dev/sdf3

C. mdadm --force-fault /dev/md2 /dev/sde2

D. mdadm --fail /dev/md0 /dev/sdc1

E. mdadm /dev/md0 --offline /dev/sdc1

New Questions 10

In which directory tree are files modified when changing kernel parameters using the command sysctl?

A. /sys/kernel/

B. /proc/kernel/

C. /proc/sys/

D. /lib/sys/

E. /sys/proc/

New Questions 11

Which file contains the message that is displayed above the login prompt of the system console? (Specify the full name of the file, including path.)

New Questions 12

The following command has just been run successfully: cd /opt; tar xvf /dev/nst0;

What will happen if the command sequence is run again?

A. An error saying that there is no tape present is generated because the tape has been ejected after being used.

B. The contents of /opt will be restored again.

C. The entire contents of /opt will be replaced with the contents of the next file on the tape.

D. The contents of /opt will have additional content added from the next file on the tape.