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1. Every command in Linux is a
Linux System Admin Interview Questions & Answers part 1
1. Every command in Linux is a
answer : executable program
2. How long can a filename in Linux be?
Correct answer: 255 characters
3. What is the shortcut to the login directory?
Correct answer: cd + enter key
4. The hierarchy of a series of directories branching in a user system starts from
Correct answer: /home
5. Saving open files, flush the system cache and other necessary system maintenance are allowed by.
Correct answer: logging off the system
6. Which directory contains configuration files that stores system and application setting?
Correct answer: /etc
7. Which command is used to find data files, programs, directories that match the search argument?
Correct answer: locate
8. Applications written to provide a GUI shell for Unix and Linux are called
Correct answer: x windows
9. The advantage of using NFS rather than Samba for file sharing in Linux is
Correct answer: compatibility with Windows file sharing
10. Which framework is provided for the programs to interchange information about Linux OS?
Correct answer: Resource Definition Framework
11. To implement new application on IBM z/10. Which of the following options need to be considered if it to be implemented in Linux?
Correct answer: Red Hat Linux does not support all the devices supported by IBM z/OS
12. Which of the following has greater market share of Linux SW/HW environment?
Correct answer: Linux on z10
13. Which of the following commands can be run to remove all the rules in an iptables table?
Correct answer: iptables -F
14. Which of the following is the BEST way to set up SSH(Secure Shell) for communicating between Systems without needing passwords?
Correct answer: Use ssh-keygen for generating public-private keys.
15. How much usable space is available, when a Linux system is configured with a RAID 5 array that consists of six 20 GB hard disk drives?
Correct answer: 100Gb
Formula: S*(N-1)
here S=size
N=number of HDD. remember it is only for RAID5
16. Which of the following commands can be used to check for file corruption?
Correct answer: md5sum
17. Which of the following allows to secure remote command line access?
Correct answer: SSH(Secure Shell)
18. Which of the following supports for creating a Linux VPN (Virtual Private Network)?
Correct answer: 3DES
19. Which of the following commands delete the files from the /tmp directory, issued by non-root user?
Correct answer: su -c "rm -rf /tmp/*"
20. Which configuration does cardmgr read at Linux system startup?
Correct answer: PCMCIA cards
21. When a computer system is reported problems with inodes and blocks, which of the following is the problem and its solution to rectify it?
Correct answer: The file system has become corrupt and needs to be repaired.
22. Which Linux command will successfully mounts a USB drive?
Correct answer: mount /dev/sda1 /mnt/usb
23. ___________ is a common tool for determining services and ports running on a remote Linux.
Correct answer: nmap
24. For supporting new diskless client workstations, which of the following services needs to be installed on a server?
Correct answer: PXE (Preboot eXecution Environment) and tftpd
25. Which of the following will kill the process 1010 by an administrator(logged in as a standard user)? The process 1010 was started by the root user.
Correct answer: su -c "kill 1010"
26. Which of the following Linux commands could be used to find what processor was detected on boot, when a laptop system is slow/
Correct answer: POST
27. How to accomplish the LILO boot configuration updation for supporting a newly installed IDE hard drive?
Correct answer: Edit lilo.conf and run "lilo -v -v"
2. How long can a filename in Linux be?
Correct answer: 255 characters
3. What is the shortcut to the login directory?
Correct answer: cd + enter key
4. The hierarchy of a series of directories branching in a user system starts from
Correct answer: /home
5. Saving open files, flush the system cache and other necessary system maintenance are allowed by.
Correct answer: logging off the system
6. Which directory contains configuration files that stores system and application setting?
Correct answer: /etc
7. Which command is used to find data files, programs, directories that match the search argument?
Correct answer: locate
8. Applications written to provide a GUI shell for Unix and Linux are called
Correct answer: x windows
9. The advantage of using NFS rather than Samba for file sharing in Linux is
Correct answer: compatibility with Windows file sharing
10. Which framework is provided for the programs to interchange information about Linux OS?
Correct answer: Resource Definition Framework
11. To implement new application on IBM z/10. Which of the following options need to be considered if it to be implemented in Linux?
Correct answer: Red Hat Linux does not support all the devices supported by IBM z/OS
12. Which of the following has greater market share of Linux SW/HW environment?
Correct answer: Linux on z10
13. Which of the following commands can be run to remove all the rules in an iptables table?
Correct answer: iptables -F
14. Which of the following is the BEST way to set up SSH(Secure Shell) for communicating between Systems without needing passwords?
Correct answer: Use ssh-keygen for generating public-private keys.
15. How much usable space is available, when a Linux system is configured with a RAID 5 array that consists of six 20 GB hard disk drives?
Correct answer: 100Gb
Formula: S*(N-1)
here S=size
N=number of HDD. remember it is only for RAID5
16. Which of the following commands can be used to check for file corruption?
Correct answer: md5sum
17. Which of the following allows to secure remote command line access?
Correct answer: SSH(Secure Shell)
18. Which of the following supports for creating a Linux VPN (Virtual Private Network)?
Correct answer: 3DES
19. Which of the following commands delete the files from the /tmp directory, issued by non-root user?
Correct answer: su -c "rm -rf /tmp/*"
20. Which configuration does cardmgr read at Linux system startup?
Correct answer: PCMCIA cards
21. When a computer system is reported problems with inodes and blocks, which of the following is the problem and its solution to rectify it?
Correct answer: The file system has become corrupt and needs to be repaired.
22. Which Linux command will successfully mounts a USB drive?
Correct answer: mount /dev/sda1 /mnt/usb
23. ___________ is a common tool for determining services and ports running on a remote Linux.
Correct answer: nmap
24. For supporting new diskless client workstations, which of the following services needs to be installed on a server?
Correct answer: PXE (Preboot eXecution Environment) and tftpd
25. Which of the following will kill the process 1010 by an administrator(logged in as a standard user)? The process 1010 was started by the root user.
Correct answer: su -c "kill 1010"
26. Which of the following Linux commands could be used to find what processor was detected on boot, when a laptop system is slow/
Correct answer: POST
27. How to accomplish the LILO boot configuration updation for supporting a newly installed IDE hard drive?
Correct answer: Edit lilo.conf and run "lilo -v -v"
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