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Q17. 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
Explanation:
See http://www.tldp.org/HOWTO/LVM-HOWTO/anatomy.html
You need to create the Physical Volumes first, then the Volume Group (consisting of PVs}, then the Logical Volumes, which you need to format and mount.
Q18. What command must be used to create an ext3 file-system?
A. mkext3fs
B. mkjfs
C. mke3fs
D. mke2fs
E. mkext2fs
Answer: D
Explanation:
Also: mkfs -t ext3 or mkfs.ext3 if you call mke2fs you actually need option -J to enable journalling otherwise ext2 will be used.
Q19. What is the command to add another IP address to an interface that already has (at least} one IP address?
A. ifconfig eth0:1 192.168.1.2
B. ifconfig eth0 192.168.1.2
C. ipconfig eth0:1 192.168.1.2
D. ipconfig eth0 192.168.1.2
E. ifconfig eth0:sub1 192.168.1.2
Answer: A, E
Explanation:
From the man pages:
ifconfig - configure a network interface
The interface is usually a driver name followed by a unit number, for example eth0 for the first Ethernet interface. If
your kernel supports alias interfaces, you can specify them with eth0:0 for the first alias of eth0.
You can use them to assign a second address.
Q20. Which of the following is a valid location in the automount configuration, when a Windows share needs to be made available to the system?
A. \\server\sharename
B. ://server/sharename
C. server:/sharename
D. :server/sharename
E. \\\\server\\sharename
Answer: B
Explanation:
From the man pages:
EXAMPLE
kernel -ro,soft,intr ftp.kernel.org:/pub/linux
boot -fstype=ext2 :/dev/hda1
windoze -fstype=smbfs ://windoze/c
removable -fstype=ext2 :/dev/hdd
cd -fstype=iso9660,ro :/dev/hdc
floppy -fstype=auto :/dev/fd0
server -rw,hard,intr / -ro myserver.me.org:/ \
/usr myserver.me.org:/usr \
/home myserver.me.org:/home
In the first line we havea NFS remote mount of the kernel directory on ftp.kernel.org. This is mounted readonly.
The second line mounts an ext2 volume on a local ide drive. The third makes a share exported from a
Windows machine available for automounting. The rest should be fairly self-explanatory. The last entry (the last three lines) is an example of a multi-map (see below).
Q21. Which of the following commands will copy one disk partition /dev/sda3 to /dev/sdb3?
A. dd if=/dev/sdb3 of =/dev/sda3 bs=4096 conv=notrunc
B. dd if=/dev/sda3 of=/dev/sdb3 bs=4096 conv=notrunc
C. dd --input /dev/sda3 --output /dev/sdb3 bs=4096 conv=notrunc
D. dd --input /dev/sdb3 --output /dev/sda3 bs=4096 conv=notrunc
Answer: B
Explanation:
From the man pages:
dd - convert and copy a file
SYNOPSIS
dd [OPERAND]... dd OPTION DESCRIPTION
Copy a file, converting and formatting according to the operands. bs=BYTES read and write BYTES bytes at a time (also see ibs=,obs=} if=FILE read from FILE instead of stdin of=FILE write to FILE instead of stdout
Q22. 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 RAIDS
D. Use LVM over RAID1
E. Use RAIDS over LVM
Answer: C
Explanation:
RAID1 would not be performance enhancing (Mirroring}, as would the default LVM (linear}. So use a RAIDS 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.
Q23. Which ONE of the following wireless tools can be used to check the wireless network link quality?
A. iwconfig
B. iwlink
C. iwscan
D. iwifi
Answer: A
Explanation:
See http://en.wikipedia.org/wiki/Wireless_tools_for_Linux
Q24. Which of these tools can provide the most information about DNS queries?
A. dig
B. nslookup
C. host
D. named-checkconf
E. named-checkzone
Answer: A
Explanation:
dig - DNS lookup utility
nslookup - query Internet name servers interactively
Host - DNS lookup utility
Named-checkconf - named configuration file syntax checking tool
Named-checkzone - zone file validity checking tool