QUESTION NO: 1
A server has three disks of 80GB each and must manage a database with 4 million records of 30KB each. The best configuration for this server, with the criteria being performance, configurability and flexibility, is:

A. Use just LVM
B. Use RAID1 over LVM
C. Use LVM over RAID5
D. Use LVM over RAID1
E. Use RAID5 over LVM

Answer: C

Explanation:
RAID1 would not be performance enhancing (Mirroring), as would the default LVM (linear). So use a RAID5 for redundancy and performance and use LVM for added configurability and flexibility A striped LVM only would work too, I guess, if you need no redundancy at all.

QUESTION NO: 2
The correct command sequence to create logical volumes on a Linux system is:

A. lvcreate, pvcreate, vgcreate, mount, mke2fs
B. pvcreate, vgcreate, lvcreate, mke2fs, mount
C. vgcreate, lvcreate, pvcreate, mount, mke2fs
D. mke2fs, pvcreate, vgcreate, lvcreate, mount
E. pvcreate, lvcreate, vgcreate, mount, mke2fs

Answer: B

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QUESTION NO: 3
What is the usable disk space of a RAID 5 array of five 18GB drives with one drive dedicated as a spare?

A. 18GB
B. 36GB
C. 54GB
D. 72GB
E. 90GB

Answer: C

QUESTION NO: 4
You decide to use the logical volume manager (LVM) to manage four 4GB disk drives. After creating the volume group, how would you create a 10GB logical volume called big-app?

A. vgcreate -p 10g -n /dev/vg01/big-app
B. vgcreate -l 2560 /dev/vg01/big-app
C. mklvm -v 10240 -n /dev/vg01/big-app
D. lvcreate -v 10240 /dev/vg01/big-app
E. lvcreate -l 2560 vg01 -n big-app

Answer: E

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QUESTION NO: 5
What is the purpose of vgextend?

A. Extend a volume group’s footprint on disk
B. Add physical volumes to a volume group
C. Increase the number of days between scheduled error checking
D. Create a volume group which uses all available space on disk

Answer: B