Viral Linux Interview Questions and Answers | Tech Arkit

* What is SSH-tunnel ?

* How to set history size ?

* How to extend VG ?

* What are logical & extended partitions ?

* Explain the steps to reset root password at boot time ?* What are run-levels ? How many types of run levels are there ?

* How we change the run level ?

* How to check the logs ?

* Difference between Journalctl & tail command ?

* What does the subscription -manager do ?

* How to archive a file ?

* What is umask ?

* How to kill a process ?

* How to assign IP address manually ?

* How to assign static IP address to a system ?

* Explain the different type s of Linux process states ?

* What is a Zombie process ?

* What is KVM ?

* What is hypervisor ?

* Difference between MBR & GPT ?

* How you can mount a file system permanently ?

* What is cron ? How to setup a cron job ?

* What is Kickstart ?

* How to create a network bridge in Linux ?

* Difference between iptables & firewalld

* What is SElinux ?

* What is ISCSI & targetcli ?

* Difference between NFS & SAMBA ?

* What is nfsnobody ?

* What is SSHFS ?

* What is Kerberos ?

* How to secure NFS with Kerberos ?

* What is the difference between telnet & SSH ?

* What is DHCP ?

* What is Kickstart file ?

* What is NTP Server ? How to configure NTP ?

Viral - Linux Interview Questions and Answers | Tech Arkit

* Command to check Disk usage ?

* Difference between ps -aux & top command ?

* What are the ways to check CPU usage ?

* How to check CPU details ?

* Explain the steps to create a partition & how to format with file system ?

* Explain the steps to create LV ?

* Explain steps to reduce XFS & EXT files systems ?

* Significance of .bashrc file ?

* How you check the kernel version ?

* How you check the Red hat release version ?

* Significance of resolv.conf file ?

* What is DNS ? How you resolve DNS ? Types of DNS records ?

* Difference between Nginx & HTTP Server ?

* Port no of HTTP, FTP, SSH, HTTPS ?

* What is SSH ? How you generate SSH-keys ?

* What is Private & public key ? How they authenticate ?

* What is the default configuration file of SSH ?

* What is the default configuration file of HTTP ?

* What is Virtual Hosting ? How you configure virtual hosting ?

* Explain ifconfig command ?

* Difference between IPv4 & IPv6 ?

* What is MAC address ? can we change the physical address ?

* How to check system uptime ?

* How to check memory information ?

* What is SWAP ?

* What is the exact memory free in your system ?

* What is cache memory ?

* What if you can do rm -rvf / ?

* Kinds of permission in Linux ?

* What is vim & vi ? 

* What is pipe | ?

* What is grep command ?

* What Find command does ?

* How to redirect commands output ?

* What is systemd in Linux ?

* What does systemctl do ?

* If you run a command like nautilus in terminal, whether it will block your terminal or

not ?

* What is rsyslog ?