Linux Interview Questions and Answers [PART A] | Linux Interview Questions and Answers for Freshers

July 7, 2024

This is our 7th Linux Tutorial in which we are going to discuss the top 50 Linux Interview Questions and Answers.

After a lot of R&D, I have tried to collect the most frequently asked Linux Questions in the interviews. That would be our Part A and I’ll try my best to bring up more and more as long as I learn myself 😀

So the following Questions have been covered in this video:

00:09 Start/Introduction
00:37 Question No. 1 What is Linux Kernel?
01:29 Question No. 2 What is Swap Memory in Linux?
02:50 Question No. 3 What are the core components in Linux?
04:17 Question No. 4 What is a Linux Shell?
06:07 Question No. 5 What are the types of Shells in Linux?
08:06 Question No. 6 What is a an Inode in Linux?
08:35 Question No. 7 What Linux File Types do you know?
09:14 Question No. 8 What is the difference between Telnet and SSH?
10:19 Question No. 9 What is the “awk” command and what does it do?
11:02 Question No. 10 What is a zombie process and what could be the cause of it?
11:55 Question No. 11 What does an & after a command do?
12:30 Question No. 12 What is crontab?
12:56 Question No. 13 How can we edit the crontab and what does each asterisk mean?
13:36 Question No. 14 What is ssh port-forwarding in Linux?
14:10 Question No. 15 How to know which process listens on a specific port?
15:29 Question No. 16 What is GRUB?
16:28 Question No. 17 How to check resource utilization in Linux?
18:07 Question No. 18 What are the process states in Linux?
19:05 Question No. 19 What is the difference between soft and hard link?
20:19 Question No. 20 What are the key files to check server boot logs?
20:40 Question No. 21 How will you automate the rotation of logs in Linux?
21:26 Question No. 22 What is FSCK?
22:29 Question No. 23 How can we force FSCK to do a filesystem check?
22:55 Question No. 24 What is LILO?
23:15 Question No. 25 Which command is used to record sessions in Linux?
23:27 Question No. 26 What is the port number for rsync?
24:16 Question No. 27 Which is faster, rsync or SCP?
24:35 Question No. 28 What is the difference between head and tail commands?
25:03 Question No. 29 What is the /etc/hosts file in Linux?
26:13 Question No. 30 How do you terminate an ongoing process in Linux?
26:43 Question No. 31 While writing a bash script, how would you append one file to another in Linux?
27:14 Question No. 32 What is the tree command in Linux?
27:43 Question No. 33 What is the difference between TCP and UDP?
28:20 Question No. 34 How do you configure a DNS client on a Linux System?
28:51 Question No. 35 Name a few tools to monitor traffic on Linux System?
30:16 Question No. 36 Which file contains network interface configuration information?
30:37 Question No. 37 How to get the public IP address of any Linux VM?
31:14 Question No. 38 What do you know about the IPtables command?
31:52 Question No. 39 What is the iptables command used for?
32:41 Question No. 40 What would be the command to block an IP address using the iptables command?
33:25 Question No. 41 What is the best Linux distro for cyber security?
33:45 Question No. 42 Which is more secure, passwod authentication or SSH keys and why?
34:32 Question No. 43 How do you know if your Linux server is secure?
36:00 Question No. 44 Tell me a couple of steps to increase the security of a Linux server?
37:03 Question No. 45 Name a few Linux server monitoring tools
37:39 Question No. 46 An easy one, name a few Linux distros?
38:14 Question No. 47 Which file contains the encrypted user passwords?
38:45 Question No. 48 Which command is used to change the Linux server’s timezone?
39:11 Question No. 49 What does curl command do?
39:57 Question No. 50 How can we check the architecture and distro (installed) on a Linux VM?
41:02 Winding up the session
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