30 Linux Admin Inteviews Questions

These Could be Top 30 Linux Admin Inteviews Questions which can be asked during your Linux System admin Job or Tech Support Engineer Jobs. I will keep Adding More Questions to This. So keep reading after every few weeks.

1.Explain What do you mean By Cloud Computing ? 
2.Explain the Boot Process in Linux ?
 3.What is the size of MBR (Master Boot Record)? 
4.What is RAID 6? 
5.What is swap and why it is used? 
6.What are the filesystem in Linux? 
7.What is the difference between ext3 and ext4 filesystem?
 8.What is cache memory and how to clean it?
 9.What is VLAN ? Can you Configure Routers and Switches? 
10.What is the difference between Routers and Switches? 
11.How will you go to Single User Mode in Linux?
 12.What is the Process ID (PID) of init process? 13.What is the user id of root user? 
14.What are the special Permissions in LINUX? 
15.How will you check free memory in LINUX? 
16.How will you check free disk space in LINUX? 
17.How will you check type of filesystem in LINUX using Command Line Feature in LINUX? 
18.What is the size of PE? 
19.What is LVM? 
20.Have you configured  NFS server?
 21.Have you configured MAIL server?
 22.What is DNS ? Explain in Detail? Why it is used? 
23.What is the port number of DHCP Server? 
24.What are the different types of  RAID? 
25.What is SUID?
 26.What is the use of inittab file in LINUX?
 What are the different runlevels in inittab file?
 27.What is the Significance of runlevel 2 in inittab file?
 28.You have lost /etc/fstab file? How will you recover /etc/fstab file? 
29.How will you check PE size in LVM? 30.How will you define PE size when configuring LVM?
31.What is LAMP? Have you configured it? 
32.What do you mean by  LVM over RAID?  
33.What do you mean by lvm over loop device?
 34.What is the  major difference between LVM  and RAID ? 
35.Tell me the name of the directory where website hosted?