1. GRUB has three stages. Can you name them? Ans: Stage 1: During this stage, the primary bootloader is read into memory by the BIOS from the MBR. Stage 1.5: During this stage, the bootloader is read into memory by the stage 1 bootloader (only if necessary). Stage...
Interview Resourses / Linux Administration
by Ramdev · Published December 29, 2015 · Last modified August 6, 2016
1. Red Hat Enterprise Linux 5 supports LUKS encryption. True or False? 1A. False. Red Hat Enterprise Linux 6 is the only version that officially supports LUKS encryption. 2. In Red Hat Enterprise Linux 6, SELinux is set to Enforcing by default during the installation. True or...
When you want to troubleshoot the NTP service, there are a few commands that can help you out. First, if you want to update the time manually, you can use the ntpdate command.
by Ramdev · Published December 27, 2015 · Last modified August 5, 2016
Before any of the clients can start obtaining an IP address from the DHCP server, you need to deal with the security requirements for the DHCP server. They include adding a firewall rule with iptables and disabling any SELinux options that prevent the DHCP service from...
by Ramdev · Published December 27, 2015 · Last modified August 6, 2016
One of the basics elements found on all networks is a Dynamic Host Configuration Protocol (DHCP) server, making it an important part of any network. DHCP makes network administration easy because you can make changes to a single point (the DHCP server) on your network and...
by Ramdev · Published December 27, 2015 · Last modified December 29, 2015
The most basic test after the DNS server has been set up properly is to ping the hostname of the nameserver and the domain itself. If both return a reply, your nameserver is querying properly.
by Ramdev · Published December 27, 2015 · Last modified August 5, 2016
A forwarding-only server does not actually handle any queries, but instead just forwards them to the correct location. This might be something you see if you work for an ISP that handles thousands of requests at a time. Forwarding-only servers are actually the easiest to set...
by Ramdev · Published December 27, 2015 · Last modified August 6, 2016
When you’re trying to access a website, you type in the name you are looking for and it comes up. In the background, though, Domain Name Service (DNS) is what translates that website name into an IP address so that the site may be accessed. This...
by Ramdev · Published December 27, 2015 · Last modified December 29, 2015
Once the FTP setup is complete, you need to test the FTP server from one of the clients, Client01. To save time during the exam and when testing in the real world, you can use the command-line FTP client lftp.
Setting up a client to use NFS is relatively simple when you have the NFS server in place. Let’s set up the Client01 system to use a share on the RHEL01 NFS server.
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