MGODIđź’Ž

LINUX (CP 211) UE 2024-2025 SOLVED INTERACTIVE

7 min read

Linux/Unix Systems SOLUTION - CP 211

THE UNIVERSITY OF DODOMA
COLLEGE OF INFORMATICS AND VIRTUAL EDUCATION
SCHOOL OF INFORMATICS
End of Semester University Examination for the 2024/2025 Academic Year CP 211: INTRODUCTION TO UNIX/LINUX

Time Allocated: 3 Hours
[100 Marks]

SECTION A (40 MARKS)

Question One

Choose the most correct answer.

i. if a CIVE Linux takes 6 seconds to load the kernel and an additional 2 seconds to start user-space services, but switching to a newer firmware reduces the kernel load time by 30%, how long does the CIVE Linux total boot time be?

  • A. 6.2 seconds
  • B. 7.4 seconds
  • C. 8.2 seconds
  • D. 6.8 seconds

ii. Mr. Uledi, a system administrator, is troubleshooting a Linux system that fails to boot. The error message states: “Error: No bootable medium found. Please insert a boot disk and press any key.” Which of the following is the most appropriate step to take you can suggest to Mr. Uledi?

  • A. Check if the system BIOS/UEFI recognizes the boot disk
  • B. Run the fsck command to check for filesystem errors
  • C. Reinstall the GRUB bootloader from within the operating system
  • D. Manually configure system services using systemctl.

iii. ______ is the package management tools used in both Debian-based and Red Hat-based distributions.

  • A. DNF
  • B. APT
  • C. RPM
  • D. Flatpak

iv. In the Linux boot process, what is the role of the init system?

  • A. It initializes and mounts the kernel modules.
  • B. It loads the Linux kernel into memory.
  • C. It manages the user-space processes after the kernel has been loaded.
  • D. It sets up the BIOS and firmware interfaces before booting.

v. Which of the following umask values will result in newly created files having 600 permissions?

  • A. 066
  • B. 027
  • C. 077
  • D. 002

vi. Which command correctly assigns SGID to a directory named community_content?

  • A. chmod 1770 community_content/
  • B. chmod 2770 community_content/
  • C. chmod 4770 community_content/
  • D. chmod 7770 community_content/

vii. Which of the following options correctly represents the structure of an entry in /etc/passwd?

  • A. Username:Password:UID:GID:Full_Name:Home_Directory:Default_Shell
  • B. Username:GID:Password:Full_Name:Home_Directory:Default_Shell
  • C. Username:UID:Password:GID:Home_Directory:Full_Name:Default_Shell
  • D. UID:Username:Password:GID:Full_Name:Home_Directory:Default_Shell

viii. What does the command chmod 751 script.sh do?

  • A. Gives the owner read, write, and execute permissions; group execute permission; others read permission
  • B. Gives the owner read, write, and execute permissions; group read and execute permissions; others no access
  • C. Gives the owner read, write, and execute permissions; group execute permissions; others execute permissions

Question Two

Match the following items from List A with the correct descriptions in List B.

List A

  1. GRUB Bootloader
  2. Linux last System
  3. MBR Partitioning
  4. UEFI Secure Boot
  5. System Call Interface
  6. chmod +x script.sh
  7. ls > output.txt
  8. [a-z]{3,5}
  9. cat file.txt >> newfile.txt
  10. Hello

List B

  • A. Hardware installation before 0% reads
  • B. Handles process management post-tense1 boot
  • C. Legacy disk partitioning system supporting up to 2 TB storage
  • D. Verifies digital signatures of OS boot files
  • E. Allows user applications to interact with the tensel
  • F. Matches lowercase letters with a length of 3 to 5
  • G. Cracks execute permission to a script file
  • H. Redirects output to a file, overwriting existing content
  • I. Matches any file that ends with .log
  • J. Redirects output to a file, appending content
  • K. Matches a number with 3 to 5 digits
  • L. Controls CPU frequency for power efficiency
  • M. Manages user authentication and permissions
  • N. Determines network routing algorithm

Question Three

Answer the following questions by filling in the correct answer.

a. If a user wants to view the current directory they are in, which command should they use?

b. If a system administrator needs to display a list of files and directories in a specific location, what command should they enter?

c. If a user wants to change their current directory to the home directory, which command should they type?

d. The command used to display real-time system information, such as CPU and memory usage, is known as ______.

e. What command is commonly used to copy files from one location to another in Linux ?

f. To create an empty file named “example.txt” in Linux, which command would you use?

g. If you need to display the contents of a text file in the terminal, which command would be suitable?

h. To end a user session in Linux, which command would the user typically enter?

i. If a user wants to view only the first 10 lines of a text file, which command should they use?

j. If you want to compress files in Linux to save disk space, which command would you use?

Question Four

a. List five key principles or philosophies behind the development of open-source software.
(5 Marks)

b. Mention five advantages of using Linux in embedded systems and Internet of Things (IoT) devices such as smart appliances, wearables, and sensors.
(5 Marks)

SECTION B (60 MARKS)

Question Five

b. Mwantum OS which a debian Linux based system has two different power management configurations:

  • Configuration X: Uses traditional BfOS + ACPI shutdown, taking 18 seconds to power off.
  • Configuration Y: Uses UEFI with fast shutdown optimization, improving shutdown efficiency by 25%.

i. Using equations (1) or (2) in Question 5(a), calculate the new power-off time for Configuration Y after applying the 25% improvement.
(2 Marks)

ii. Provide detail description of how BfOS operates.
(3 Marks)

iii. Which configuration is more efficient, and by how many seconds does it improve power-off time?
(2 Marks)

Question Six

a. A team of developers is collaborating on a shared project directory named /projects/teamX. The requirements are:

  • Any new file created in the directory should be owned by the same group, regardless of the user who created it.
  • The group members should have read and write access, but other users should not have any access.
  • The permissions should be applied automatically when new files are created.

Based on the requirements above:

i. With justification, describe which special permission should be used.
(2 Marks)

ii. Write the command to implement this setting on /projects/teamX.
(3 Marks)

TO BE CONTINUED…

Graph View

Backlinks