Answer: The GNU project was begun to make a working framework which will be free for clients. – If the above step doesn’t help then check /etc/sysconfig/network file and make sure “NETWORKING” is set to “Yes”. !”) this indicates that the account got locked-up by running the command “passwd -l ” command (available only for root user). 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. #ifconfig eth0 (it could be any interface). ANS : # Make the user sudo with appropriate permissions on the commands required.– Edit the file /etc/sudoers using the command “visudo”.– Add the below lines to /etc/sudoers file: (example to make user “raj” to execute shutdown/reboot commands), raj ALL=/sbin/shutdown,/sbin/reboot,/sbin/poweroff. Same way, if you wish to disable user list, run the below command as root user: #gconftool-2 –direct –config-source xml:readwrite:/etc/gconf/gconf.xml.defautls –type bool –set /apps/gdm/simple-greeter/disable_user_list true. As the name implies this does nothing of data re-order or queuing, it just manages data as First-In-First-Out basis and would ideal when there is a separate storage based controller which does better data re-ordering and understanding of disk layout so that the kernel workload would gets reduced. So, expect Linux questions coming your way when interviewed for a security-based job profile. 1) How do you change the network speed of an interface to 100Mbps with auto-negotiation off and duplex in full mode(example for interface eth0)? 10 Useful Random Linux Interview Questions and Answers Editor January 7, 2015 February 22, 2014 Categories Interview Questions 59 Comments To a little surprise this time we are not presenting Interview question on any specific subject but on random topics. Q:28 At which location Puppet Master Stores Certificates ? 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. To get a list of all the packages installed date: #rpm -qa –last. What is Linux? ANS : [[email protected] Desktop]# dumpe2fs /dev/vg1/rootlv | grep -i “backup superblock”dumpe2fs 1.41.12 (17-May-2010)Backup superblock at 32768, Group descriptors at 32769-32769Backup superblock at 98304, Group descriptors at 98305-98305Backup superblock at 163840, Group descriptors at 163841-163841Backup superblock at 229376, Group descriptors at 229377-229377Backup superblock at 294912, Group descriptors at 294913-294913Backup superblock at 819200, Group descriptors at 819201-819201Backup superblock at 884736, Group descriptors at 884737-884737, ORIf the file system is un-mounted then could use mke2fs : #mke2fs -n /dev/vg1/rootlv | grep -i -A1 “superblock backup”. Great..! – If the above ping fails then ping the ipaddress directly and test if that works then problem with name resolution (DNS), so it should be either addressed at DNS level or fixing /etc/hosts file. #dmidecode –type system |egrep -i “Manufacturer|Product Name|Serial Number|Family”OR#dmidecode –type system |grep “System Information” -A 8, – To find out BIOS details :#dmidecode –type bios |grep “BIOS Information” -A 6. 3) How do you provide an user exclusive permissions to shutdown or reboot a system? Thanks for valuable questions. I have no doubt on your windows server administration skills but most of the times people with good experience and a high skill also fails to pass the interview for Windows Server Administrator because of the kind of windows server interview questions asked by the interviewers. If you like these questions , please don’t hesitate to share on Facebook, google+ and Twitter. 6. 6) How to run ‘free’ command to print output of 2 instances with 2 seconds interval and store that output in a file (skipping any errors/warnings), and run this in background? This test contains 30 Linux basic questions and answers. Once an account gets locked, there would be an exclamation mark before the encrypted password files in “/etc/shadow” as shown below: mango:!$1$O5zV5Rj/$XhuRe8Og.AiXMXDGSIsae/:16266:0:99999:7::: 5) How to disable user login via terminals? Linux Administrator Interview Questions And Answers For Experienced 2020. 31. – Mount an iso which holds this package and then run “rpm2cpio” command with “cpio” to extract required file. 16) What are the differences between hard & soft links in Linux file system? A list of top frequently asked Linux interview questions and answers are given below. System security and Linux administration go hand to hand. This is one of the top linux interview questions asked in the linux interview. Create a directory where to extract. i have que.. if any one can help on this . Ans: using the command ‘find /
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