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LSA721S - LINUX SYSTEMS ADMINISRATION - 2ND OPP - JAN 2025 |
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n Am I BI A u n IVE Rs ITY
OF SCIEnCE Ano TECHnOLOGY
FACULTY OF COMPUTING AND INFORMATICS
DEPARTMENTOF COMPUTERSCIENCE
QUALIFICATION:BACHELOROF COMPUTERSCIENCE
QUALIFICATIONCODE: 07BACS 07BCMS
LEVEL:7
COURSE:LINUX SYSTEMSADMINISTRATION COURSECODE: LSA721S
DATE: JANUARY 2025
DURATION: 3 HOURS
PAPER:THEORY
MARKS: 77
SECONDOPPORTUNITY/ SUPLLEMENTARYEXAMINATION QUESTIONPAPER
EXAMINER(S)
MR. SHOOPALA NAMBAHU
MODERATOR:
MS. JOVITA MATEUS
THISQUESTIONPAPERCONSISTSOF 3 PAGES
(Excluding this front page)
INSTRUCTIONS
1. Answer ALL the questions on the answer scripts.
2. Write clearly and neatly.
3. Number the answers clearly.
PERMISSIBLEMATERIALS
1. Calculator.
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SectionA: (Multiple choice)
[10 Marks]
Read each question carefully, and then select THEANSWER that best fits the
question
1. Which command is used to identify file type?
a) type
b) file
c) finfo
d) info
2. Command used to determine the path of an executable file is
a) which
b) where
c) wexec
d) what
3. Command used to count number of character in a file is?
a) grep
b) wc
c)count
d)cut
4. Which of these commands could you use to show one page of output at a time?
a) less
b) sed
c) pause
d) grep
5. pwd command displays
a) user password
c) present working directory
b) password file content
d) none of the mentioned
6. Which of the following commands can be used to change default permissions for
files and directories at the time of creation
a) Chmod
b) Chown
c) Umask
d) Chgrp
7. Host specific configuration files are installed in
a) /etc directory
b) /lib directory
c) /root directory
d) /bin directory
8. Which one of the directory does not contain binary files?
a) /bin
b) /sbin
c) /etc
d) none of the mentioned
9. On Linux which of the following is not a valid file type
a) Socket
b) lnode
c) Soft linked
d) FIFO
e) LIFO
10. Which is an example for CD-ROM?
a) Virtual Terminal
c) Terminal
b) block special file
d) hard disk
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Section B: True or False
[15 Marks]
Read each statement below carefully and state whether it is false or true.
1. Usually, people understand Linux to be an entire software suite of developer tools.
2. Linux cannot be installed on a PCjust having the bare minimum resources.
3. inix was designed solely for commercial use and not for classroom teaching.
4. Operating System is a software designed to control the hardware of a system in
order to allow users and application programs to make use of it.
5. Ctrl+W is used to search for a text string in nano text editor.
6. You may use makefs -type ext2 to create an ext2 file system.
7. Data on a computer, is stored in binary form as a series of ls and Os.
8. In Linux devices are referenced in /dev.
9. Only one unprivileged user may be logged into a Linux system at any given time.
10. Shell is the software that provides an interface for the user of an operating system
which needs services of a kernel.
11. -s check if a file has a length greater than 0
12. The wc command is used to find out the number of users logged on.
13. Each commercial vendor publishes a hardware computer list and makes it available
on its web site.
14. Shell provides us with an interface to the operating system.
15. We can use the> symbol along with pipe in a command.
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Section C
Answer all the questions in this section
[52 marks]
1. Write down the commands to perform the following:
i. To sort /etc/passwd file and store the output into user.txt file.
[2]
ii. Tells the user how long the system has been running since its last boot, how many
users are currently logged in, and how much load the system is experiencing. [1]
iii. Give a command used to display all system variables.
[1]
2. Explain what the following commands are doing:
i. chgrp labs sales.txt
[2]
ii. rpm -qa
[2]
iii. mount /dev/had /mnt
[2]
3. You are managing a Linux system that needs to perform daily backups at 2 AM without
any manual intervention. You have a script (backup.sh) ready, but it needs to be
scheduled to run automatically. How would you use cron to schedule the backup script
to run every day at 2 AM?
[3]
4. What can be installed to keep the system running during a power failure so that it can
shut down gracefully?
[2]
5. Name three software management tools used in mainstream Linux distros.
[3]
6. You are a system administrator, and you want to install a .deb package, but you only
have an .rpm package. What will you do to get a .deb?
[2]
7. Which file will you configure if you want your file system to be mounted at boot time?
[2]
8. What would the syntax be to run a cronjob at 5:30 PM every Monday, Wednesday, and
Friday?
[2]
9. Where are the password stored in Linux and in which format are they stored?
[2]
10. What do you understand by the term dependency?
[2]
11. What are the responsibilities of the kernel?
[4]
12. Name three important characteristics exhibited by server-grade systems.
[3]
13. There are five types of System Calls, name and explain two of them.
[4]
14. Why would you want to keep a server room under lock and key?
[2]
15. What do you understand by the term 'portability,' which is one of the basic features of
Linux?
[2]
16. Name three ways to design a server that is unfriendly to casual users.
[3]
17. Write a shell script that prompts the user to enter two numbers. The script should then
calculate and print the sum and the product of the two numbers.
[ 6]
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