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CORK INSTITUTE OF TECHNOLOGY
INSTITIÚID TEICNEOLAÍOCHTA CHORCAÍ
Semester 2 Examinations 2011
Module Title: Systems Administration 1
Module Code: COMP
School: School of Computing & Mathematics
Programme Title: Bachelor of Science in Computing
Programme Code: KCOME_7_Y
External Examiner(s): Ms Ann Meagher Internal Examiner(s): Mr Gerard MacSweeney
Instructions: Answer 4 questions. All questions are worth equal marks.
Duration: 2 Hours
Sitting: Summer 2011
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.
(a) What is the purpose of a UNIX shell? ( 2 Marks )
(b) Write down an example of a UNIX shell. ( 2 Marks )
(c) Linux is open-source. What does this mean? ( 2 Marks )
(d) Write down examples of three popular Linux distributions. ( 3 Marks )
(e) What is meant by the term Host Operating System Based Virtualisation? ( 2 Marks )
(f) What is the other category of Virtualisation? ( 2 Marks )
(g) Name two popular Linux graphical user interfaces. ( 2 Marks )
(h) What kind of files would you expect to find in the following Linux directories: /root, /etc, /bin, /sbin, /dev and /media? ( 6 Marks )
(i) Write down one advantage and one disadvantage of the using the vi editor when working in a Linux environment. ( 2 Marks )
(j) Name the two Linux scheduling tools that an administrator might use to run tasks at different times. ( 2 Marks )
(a) Apart from ordinary files and directories, name two other types of file. ( 2 Marks )
(b) Suggest three examples where UNIX compression and archiving tools might be used. ( 3 Marks )
(c) Indexed allocation is a means of allocating disk space. Describe – with the aid of a diagram - one other method of allocating space. State one disadvantage and one advantage of the method. ( 5 Marks )
(d) Name the standard Linux file system. ( 1 Mark )
(e) Name two windows file systems. ( 2 Marks )
(f) Explain why the UNIX block addressing scheme is suitable for accessing both small and large files. ( 2 Marks )
(g) Apart from dual operating systems, suggest three reasons why an administrator might partition a disk. ( 3 Marks )
(h) Why might administrator mark a partition as extended? ( 2 Marks )
(i) When is the best time to partition a drive? ( 1 Mark )
(j) What is the purpose of a swap partition? ( 2 Marks )
(k) Name the command line system utility used to partition a disk. ( 2 Marks )
(a) What is the purpose of the /etc/fstab file? ( 2 Marks )
(b) Explain the meaning of each item in the following line from a typical fstab file.
/dev/hdc /media/cdrom iso9660 user,ro,noauto 0 0 ( 8 Marks )
(c) If the directory /media/cdROM represents a mounted compact disk, how would an administrator un-mount the device? ( 2 Marks )
(d) Name the first process that’s run when Linux starts. ( 1 Mark )
(e) What is the purpose of the dispatcher? ( 1 Mark )
(f) How would an administrator enable a device (such as cdROM above) to be mounted as a sub directory in root’s home? ( 2 Marks )
(g) The following is part of the output of the ps – l command on a Linux system.
UID PID PPID TTY TIME CMD 109 11986 11984 pts/6 0:00 sh 109 11993 11986 pts/6 0:00 bash 109 12049 11993 pts/6 0:00 ksh
What do UID, PID, PPID and TTY mean? What would happen if the command kill -9 11986 was entered? ( 6 Marks )
(h) What is the difference between pre-emptive and non pre-emptive scheduling algorithms? Give an example of each. ( 3 Marks )
