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Linux Support Interview Questions
1,887 linux support interview questions shared by candidates
what is nfs ?tell me deamons and options ?
what is crontab and fields ?
what is there in rc.d file how to run a process in particular series?
Which OS are we using and version About projects I did Boot process How to add 10 GB to a mount point What is GIT and why is it required Local and remote repo How to establish connection between remote and local repo How to apply patches on Linux ? How to rollback when required ?
Please explain how traceroute works
Describe the layers of the Open System Interconnect Model.
A client has a Red Hat Linux-based firewall that is multihomed, and is connected to both the internal (eth0 192.168.0.1/24) and external (eth1 69.25.33.245/24) networks. They would like you to configure this firewall to act as the default Internet gateway. 1. What utilities would you use to accomplish this? Please list the commands and their parameters that you would execute. 2. What environment/kernel changes would be needed to make this work? What tools would you use to make the changes? What commands would you execute for the changes?  3. Once it’s working, how do you ensure that the configuration will persist a reboot? Please list the tools that you would use, commands that you would execute, or files that you would change, as applicable.
Current setup: A server is running Red Hat Enterprise Linux 6 with a single public network interface, provisioned with one IP (10.0.0.1/24) for the server, and two virtual IPs (10.1.0.4 and 10.1.0.5) for services running on the server. The additional IP addresses are routed with a /32 prefix through the primary IP address. Desired setup: Two virtual machines are running on the server, with each one using one of the virtual IPs. The hosting provider will not route traffic on the virtual IPs to anything other than the physical server, so a workaround will need to be implemented to allow traffic to the virtual machines. The virtual IP addresses must be configured directly on the virtual machines to assist with some application limitations. Requirements: 1.What virtualization product would you recommend to use for this implementation? Provide justification based on the following factors: - Technical strengths over other virtualization solutions, - Cost (monetary, such as license costs, and labour, (such as installation, maintenance, support, etc.) Please add anything else you feel is worth mentioning.  2. Provide an overview of the technical details of the implementation. Include the type of network setup to use in the virtual environment, so that the result produces the desired setup. Please include any other technical points you think are important.
Describe Linux OS. How to behave with an erratic client.
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