user administration in linux interview questions and answers

Q:12 How to check and mount nfs share ?eval(ez_write_tag([[336,280],'linuxtechi_com-leader-1','ezslot_9',132,'0','0'])); Ans: Using ‘showmount’ command we can see what directories are shared via nfs e.g ‘showmount -e ’.Using mount command we can mount the nfs share on linux machine. Answer: One can use SSH, reliable remote desktop software that can help the users to control the Red Hat server remotely. Show/Hide Answer, 15. 15. Can 2 user have same uid & gid, Hi Shubham Question3: What is the default permission applied on the user when you mount a NFS permission on any local directory in your system? Applying for jobs is never easy. 7. This set includes questions on LILO (Linux Loader), how to shrink the size of LVM, enhancing password security, Cron and Anacron, how to convert Linux computer into a router, YUM, ext2 and ext3 file systems, and much more. Start your preparation by going through the 50 most frequently asked questions on Linux, from this Linux Interview Questions tutorial. 20+ scenario based interview questions with answers for beginners and experienced users in Linux. I got this question from an interview. Suggestion :- In this article we will discuss top 30 Linux system admin interview questions with the answers for experience professionals. Here we have compiled a set of most asked Linux interview questions so that you can face the Linux interview with confidence. Linus Torvalds first introduced it. share me steps if it’s possible. 2. This test contains 30 Linux basic questions and answers. Linux System Admin Interview Questions & Answers By Anuket Jain On 9 April 2019 In Home , Questionarize In this article, we are going to discuss some Linux system admin interview questions with the answers for experienced professionals. All of them are worth reading. Linux is a UNIX based operating system. What is the command to change and view the expiry date for any user? How to change primary group for any user? How to lock & unlock a user Puppet is a  IT automation software used to push configuration to its clients (puppet agents) using code. Please find the answer of your queries below : 1. What are the details you get with finger command? ... Linux - Shell Scripting Training Details Ans: There are two ways to scan newly assigned luns :Method:1 if sg3 rpm is installed , then run the command ‘rescan-scsi-bus.sh’Method:2 Run the Command ,  echo ” – – – ” > /sys/class/scsi_host/hostX/scan. These 40 solved Linux questions will help you prepare for technical interviews and online selection tests conducted during campus placement for freshers and job interviews for professionals. Your email address will not be published. Q:19 List the services that are enabled at a particular run level in linux server ?eval(ez_write_tag([[250,250],'linuxtechi_com-mobile-leaderboard-2','ezslot_15',141,'0','0'])); Ans: With the help of command ‘chkconfig –list | grep 5:on’ we can list all the service that are enabled in run level5. What is the default permission on user’s home directory? Linux Admin Interview Questions. Q:9 How to set the umask permanently for a user? How to create a user without useradd command? What is the command to create a user with a pre defined uid, shell and home directory? Show/Hide Answer, 6. By  default log files of Sar command  is located at  /var/log/sa/sadd file, where the dd parameter indicates the current day.eval(ez_write_tag([[336,280],'linuxtechi_com-box-4','ezslot_0',129,'0','0'])); Q:4 How to increase the size of LVM partition ? A superuser can run any commands without any restriction. First zero (0) after defaults is dump frequency ,if it is set to zero then the file system wouldn’t be dumped.Second Zero (0) after defaults shows fsck frequency , if it is set to 0 , then fsck will not check the file system for errors after corruption or improper shutdown. We have a series of interview questions and answers for your Linux interview preparation based on various levels of basic, advanced, technical, admin, kernel, and commands . ‘/  (Options)’ and then restart the nfs service. This is one of those Linux administrator interview questions that require a bit of explanation, so let’s just jump into it. Show/Hide Answer, 13. Ans: umask stands for ‘User file creation mask’, which determines the settings of a mask that controls which file permissions are set for files and directories when they are created. To kill a process of pid 20 or 30 , use the kill command like : # kill -9 20 ; kill -9 30. Linux is a free open source multi-user operating system that is built on Linux kernel. Great..! If not then what is the command to delete the home directory of user along with the user Q:23 How  to find WWN numbers of HBA cards in Linux Server ? Ans: using the command ‘find / , in this example we are extending the size by 100MB. Why do we use visudo rather than editing the file with vi or any other editor? If possible please post real time scenario based questions…., Very Good and unique questions as like Real time…. Network bonding is also known as NIC Teaming.eval(ez_write_tag([[250,250],'linuxtechi_com-leader-3','ezslot_12',135,'0','0'])); Q:15 What  are the different modes of Network bonding in Linux ? Tips To Stay Safe On The Internet And Prevent Hacking, How to configure and Install kdump (crashkernel) in RHEL/CentOS 7, Step by step guide to implement/modify quota (soft and hard limit) for user, add/modify grace period and more in Linux with examples, Interview Questions on Red Hat Cluster with Answers, Interview Questions on VMware ESXi with Answers, Interview Questions on Linux Servers with Answers, Linux Interview General Questions with Answers, Interview Questions on Linux Permissions with Answers. Here we have compiled Linux Interview Questions and Answers and presented them in this blog based on the opinion of Linux Experts. appreciate you admin. If you are a beginner (with some knowledge of Linux or having certification) or with professional Linux administration experience, then following Q & A help for your interview preparation. Most Asked Linux Interview Questions This article namely; “Linux interview questions” has been written by focusing on the crucial questions that are frequently asked at the Linux job interview. This test explores the various Linux commands and techniques commonly used by system administrators and the end users to manage their day-to-day work in a Linux environment. Good Questions and answersit would be helpful if you mention the booting process also. If you are preparing for Red Hat Linux System Administration job interview then go through Wisdomjobs interview questions and answers page. 6. Linux is said to be the most popular and fast OS in today’s market and hence there are multiple requirements all over the world to manage the hardware of any desktop or laptop. Ans: We should never upgrade Linux Kernel , always install the new New kernel using rpm command because upgrading a kenel can make your linux box in a unbootable state. Network Topology: How Does Your Network Layout Affect Performance? Q:11 How to share a directory using nfs ? Ans: ‘puppetca  –sign hostname-of-agent’ in (2.X)  & ‘puppet ca  sign hostname-of-agent’ in  (3.X). September 29, 2015 at 3:22 am ... Interview Questions on VMware ESXi with Answers; Interview Questions on Linux Servers with Answers; 4. Are you preparing for a Linux interview? What is the default permission on user’s home directory? Great Job!! Show/Hide Answer, 9. Ans: Using the Commands ‘netstat -nr’ and ‘route -n’ we can see the default route and routing tables. What is the command to change and view the expiry date for any user? In this chapter, we will discuss in detail about user administration in Unix. Read Also : How to Configure Chroot SFTP Server in Linux, I like your Linux interview questions you put some more question on this site. Q:3 What does Sar provides and at which location Sar logs are stored ? If not then what is the command to delete the home directory of user along with the user, 8. What is the command to create a user with a pre defined uid, shell and home directory? The three types of owners are the user , the group and others . There are three types of accounts on a Unix system − This is also called superuser and would have complete and unfettered control of the system. Linux Interview questions: Here is Top 50 Linux Interview questions and answers for Beginners. Q:1 Why LVM is required ?eval(ez_write_tag([[728,90],'linuxtechi_com-medrectangle-3','ezslot_7',127,'0','0'])); Ans: LVM stands for Logical Volume Manager , to resize file system’s size online we required LVM partition in Linux. We divided the Interview Questions into four categories as Basic, Admin, Technical and Command based Questions. By  default log files of Sar command  is located at  /var/log/sa/sadd file, where the dd parameter indicates the current day. Q:6 How to create partition from the raw disk ? Below mentioned questions may help the readers to clear Linux interviews. Show/Hide Answer, 11. Show/Hide Answer, 4. Comment document.getElementById("comment").setAttribute( "id", "a44531e43274d1e3f59b919842226e9b" );document.getElementById("ea0e4aaed8").setAttribute( "id", "comment" ); we respect your privacy and take protecting it seriously, Linuxtechi: Linux Tutorials & Guides © 2020. Linux Interview Questions. Thanks for valuable questions. What kind of remote software users can use to encrypt communication? Puppet code can do a variety of tasks from installing new software, to check file permissions, or updating user accounts & lots of other tasks. If I delete a user, does it’s home directory gets deleted? But it’s even harder to gear yourself up to face an interviewer, let alone a full panel of them, and answer questions in a way that demonstrates your capabilities. Disable firewall on server and client side and see if that is the problem SUID (Set owner User ID up on execution) is a special type of file permissions given to a file.Normally in Linux/Unix when a program runs, it inherits access permissions from the logged in user. Network bonding is also known as NIC Teaming. Unknown. keep doing, these question are very good but please add some more question, hi admin its really good to study this article please keep moving live this ..& please post real time scenario .. i have few questions to ask1.if we what to mount a directory permanently in # /etc/fstab at last what it means “defaults 0 0”2. I have to set a cronjob which will run daily at 12AM, all input and output errors will redirect to /dev/null. hai friends this is very useful interview quations. Why Choose Desktop and Why Choose Mobile Gaming? Ans: Using the command ‘cat /proc/net/bonding/bond0’ , we can check which mode is enabled and what lan cards are used in this bond. cat /etc/shadow |grep -i test1. what would be the cmd ? Default umask for the Root is 0022 hence file – 644 and dir – 755 whereas default umask for non-root user is 0002 hence file- 664 and dir -775 permissions. SUID is defined as giving temporary permissions to a user to run a program/file with the permissions of the file owner rather that the user who runs it. Below is the list of 2020 Linux Interview Questions and Answers, which can be asked during an interview for fresher and experience. It enables users to determine the rules and policies which decide how virtual machines deploy resources, and these resources should be prioritized to multiple virtual machines. 2. Name any 3 files which are automatically created inside any user’s home directory when a user is added. and i have added the file to a group “hello” & added a “hare”user to that group. Question4: What is the difference between NFS share and a Samba … Commentdocument.getElementById("comment").setAttribute( "id", "a9774408ef341bb7493cbcc69ba230c7" );document.getElementById("g640674f26").setAttribute( "id", "comment" ); Save my name, email, and website in this browser for the next time I comment.

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