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Q57. CORRECT TEXT - (Topic 7)

Which file contains the text message that is displayed after logging into the console? (Specify the full name of the file, including path.)

Answer: 

/etc/motd


Q58. CORRECT TEXT - (Topic 2)

Which directory contains the system-specific udev rule files? (Specify the absolute path including the directory name)

Answer: 

/etc/udev/rules.d, /etc/udev/rules.d/


Q59. CORRECT TEXT - (Topic 6)

Running tcpdump -nli eth1 'tcp' shows the following output:

14:41:53.694538 IP 10.1.52.145.51738 > 24.215.7.162.143: Flags [.], ack 33051, win 1002,

options [nop,nop,TS val 36789130 ecr 1746004159], length 0

What is the source IP address of this packet? (Please specify the answer in digits and dots ONLY.)

Answer: 

10.1.52.145


Q60.  - (Topic 1)

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.

Answer: B


Q61.  - (Topic 8)

You maintain daily backups of a large file, as well as calculating an MD5 checksum with md5sum. When verifying the contents of one such backup, you notice that the new checksum is different from the previous one by only one byte. What does this tell you about the contents of the file?

A. A single character in the original file has been modified.

B. 1/32nd of the original file has been modified.

C. 1/128th of the original file has been modified.

D. It tells you that the original file has been modified.

E. The contents of the file are in reverse order from the original.

Answer: D

Explanation: The MD5 (Message Digest number 5) value for a file is a 128-bit value similar to a checksum. This value is calculated according to the contents of a file. If a file has changed, the MD5/checksum value will be different.

Reference: http://www.iay.pwp.blueyonder.co.uk/threel/tech/tools/md5.htm

Incorrect Answers

A:A different checksum means that the file has changed. However, it offers no indication of how much of the file has changed.

B:A different checksum means that the file has changed. However, it offers no indication of how much of the file has changed.

C:A different checksum means that the file has changed. However, it offers no indication of

how much of the file has changed.

E:A different checksum means that the file has changed. However, it offers no indication of how much of the file has changed.


Q62.  - (Topic 4)

Which of the following are common Linux filesystem types used for root partitions? (Choose THREE correct answers.)

A. ext4

B. VFAT

C. NTFS

D. XFS

E. Btrfs

Answer: A,D,E


Q63.  - (Topic 5)

What are the options to node.startup in the iscsid.conf file? (Choose TWO correct answers.)

A. login

B. initiate

C. manual

D. discover

E. automatic

Answer: C,E


Q64. CORRECT TEXT - (Topic 4)

Consider the following /etc/fstab file:

/dev/hda1 swap swap defaults 0 0

/dev/hda2 / ext2 defaults 1 1

/dev/hda3 /home ext2 defaults 1 2

none /proc proc defaults 0 0

/dev/sdb1 /media/usb0 vfat user,noauto 0 0

What is one of the possible commands that an ordinary (non-root) user can use to mount the /dev/sdb1 partition on the /media/usb0 mount point? (Please enter the command with all parameters and/or options but without any file system type options.)

Answer: 

mount /dev/sdb1, mount /media/usb0, /bin/mount /dev/sdb1, /bin/mount

/media/usb0, mount /media/usb0/, /bin/mount /media/usb0/