201-450 Practice Test

201-450 Practice Test practice questions, page 2 of 5, with answer review and explanations.

Question 6

The following command has just been run successfully: Cd /opt; tar xvf /dev/nst0; What will happen if the command sequence is run again?

  1. An error saying that there is no tape present is generated because the tape has been ejected after being used
  2. The contents of /opt will be restored again
  3. The entire contents of /opt will be replaced with the contents of the next file on the tape
  4. The contents of /opt will have additional content added from the next file on the tape

Question 7

FILL BLANK - What command discards unused blocks on a mounted file system in order to support SSD devices? (Specify ONLY the command without any path or parameters.)

Question 8

Which single command simulates a failed device within a RAID 5 array?

  1. mdadm --remove /dev/md0 /dev/sdd1
  2. mdadm --zero-superblock /dev/sdf3
  3. mdadm --force-fault /dev/md2 /dev/sde2
  4. mdadm --fail /dev/md0 /dev/sdc1
  5. mdadm /dev/md0 --offline /dev/sdc1

Question 9

What is the minimum number of disks required in a fully redundant RAID5 array?

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5

Question 10

A system has one hard disk and one CD writer which are both connected to SATA controllers. Which device represents the CD writer?

  1. /dev/hdb
  2. /dev/sdd
  3. /dev/scd1
  4. /dev/sr0
  5. /dev/sr1