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CORK INSTITUTE OF TECHNOLOGY
INSTITIÚID TEICNEOLAÍOCHTA CHORCAÍ
Semester 1 Examinations 2010/
Module Title: System Administration 1
Module Code: COMP 7020
School: Mathematics & Computing
Programme Title: Bachelor of Science in Computing - Award Bachelor of Science in computing in Information Technology Support – Year 2 Higher Certificate in Science in Computing in Information Technology Support – Year 2 Higher Certificate in science in Computing – Year 2
Programme Code: KCOMP_7_Y KITMN_8_Y KITSU_6_Y KCOME_6_Y
External Examiner(s): Ms. Ann Meagher Internal Examiner(s): Mr. Gerard Mac Sweeney, Mr. Karl O’Connell
Instructions: Answer 4 questions. All questions are worth equal marks
Duration: 2 Hours
Sitting: Winter 2010/
Requirements for this examination:
Note to Candidates: Please check the Programme Title and the Module Title to ensure that you have received the correct examination. If in doubt please contact an Invigilator.
Q1. (a) List any 8 tasks that are performed by a systems administration and briefly explain any 2. (12 Marks) (b) Why is resource monitors an important role for a Systems Administrator and what is provided by the operating system to help the administrator in this role? (4 Marks) (c) Briefly explain the history of UNIX (2 Marks) (d) Briefly explain the UNIX Shell. (2 Marks) (e) What is a Linux distribution and give an example. (2 Marks) (f) On the Linux command line what notation is used to identify hidden files and what is the command you execute that will list these files in your directory. (3 Marks)
Q2. (a) In UNIX the following is a typical file permission string. Explain the meaning of each of the 10 permission character positions in relation to the example. (5 Marks)
-rw-r--r-- 1 geeko ITSGroup 28 Oct 2 11:43 temp
(b) Change the permission on the folowing file using octal notation to allow: The user to have rwx permission The group to have rw- permission.
-rw-r--r-- 1 geeko ITSGroup 28 Oct 2 11:43 temp (4 Marks)
(c) What policy should a system administrator set in relation to user passwords?(2 Marks) (d) What is the typical information stored in the /etc/passwd file on a Linux system. (4 Marks) (e) Is the root user on Linux required to maintain a list of users passwords in order to login as that user? Explain your answer. (3 Marks) (f) The administrator has created three new Linux users, Mary, Jane and Tom. The administrator wants to: Allow Mary and Jane to be able to edit a file called Suppliers but not allow Tom any access to the file. Explains the steps by which this can be achieved. (5 Marks) (g) Without using a GUI, what are the 2 command that an administrator can run in order to create a new user and in order to change a user’s password? (4 Marks)
Q 4. (a) With reference to starting a Linux system, what is the BIOS and what is its purpose? (3 Marks) (b) What is the purpose of an independent boot loader? (2 Marks) (c) Name two examples of independent boot loaders. (2 Marks) (d) Consider the following part of a boot loader configuration file:
default= timeout= splashimage=(hd0,2)/boot/grub/splash.xpm.gz title Ubunu Linux (9.4) root (hd0,2) kernel /boot/vmlinuz-2.4.20-8 ro root=LABEL=/ initrd /boot/initrd-2.4.20-8.img title Windows XP rootnoverify (hd0,0) chainloader +
(i) What is the purpose of the first line and what does the 1 mean? (2 Marks) (ii) What is meant by timeout in the second line? (2 Marks) (iii) What would you expect to appear on the monitor screen if this is running? (2 Marks) (iv) What does (hd0,2) and (hd0,0) refer to? (2 Marks) (v) (hd0,1) is not in the above text, if it exists what might it refer to? (2 Marks) (e) What is the first process to run and what is its uid? (2 Marks) (f) In a typical Linux system, what would you expect to be the default run-level?(1 Mark) (g) What is the name of the configuration file that sets the default run-level and what directory would you expect to find it in? (2 Marks)
(h) In Suse Linux, the file / etc/init.d/boot runs in the same configuration file that sets the
default run-level. What is its purpose? (3 Marks)
Q 5. (a) What type of files would you expect to be in the following Linux directories: /bin, /sbin, /root, /home, /media & /etc. (6 Marks) (b) In Linux, what is an allocation unit? (2 Marks) (c) What is the term that describes the difference between a file’s allocation unit and the file size? (2 Marks) (d) What Linux command displays the number of blocks for individual files? (2 Marks) (e) List seven factors which might be considered when developing a backup policy. (7 Marks) (f) In a Linux context, what is meant by archiving files? (2 Marks) (g) What Linux command is used when archiving files? (2 Marks) (h) After archiving files what other operation might be performed on data files during the backup process? (2 Marks)
