HackFuel Services AWS and Linux Administrator Interview Questions and Answers

It was about an aptitude test which is on English grammar and athematic reasoning.

The Fibonacci series can be applied to alphabets, and the same should be printed.

Q1. Fibonancci series to print the alphabets?
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Q2. Print the numbers in descending order 123456?
Ans. 
Print numbers in descending order 123456
• Create an array of strings containing the numbers 1 to 6

• Sort the array in descending order

• Print the sorted array
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Q1. Why are you choosing our organization?
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I am choosing your organization because of its reputation for innovation, strong company culture, and opportunities for growth.
• Reputation for innovation in the industry

• Strong company culture that values employee development

• Opportunities for growth and advancement within the organization
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Q2. Are you open to relocation?
Ans. 
Yes, I am open to relocation for the right opportunity.
• I am willing to relocate for the right job opportunity that aligns with my career goals.

• I am open to exploring new locations and experiencing different cultures.

• I understand that relocation may be necessary for career advancement and personal growth.
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Q3. Are you comfortable with rotational shifts?
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Yes, I am comfortable with rotational shifts as I have prior experience working in such shifts.
• I have previous experience working in rotational shifts at my previous job.

• I am adaptable and can easily adjust my schedule to accommodate rotational shifts.

• I understand the importance of being available during different shifts to ensure smooth operations.

• I am willing to work in rotational shifts to support the team and meet
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Q1. S3 storwge class
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Q2. Day to day activities in current role
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Q3. Amazon vpc advantages vpc peering
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Q4. Jenkins pipeline building
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Q5. Terraform validate command
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Q1. What is lvm how it is work?
Ans. 
LVM stands for Logical Volume Manager, a tool used to manage disk storage in Linux systems.
• LVM allows for dynamic resizing of logical volumes without downtime.

• It consists of physical volumes, volume groups, and logical volumes.

• Commands like pvcreate, vgcreate, lvcreate are used to create and manage LVM.

• LVM provides flexibility in managing storage space by allowing logical volumes to span multiple physical disks.
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Q2. How to mount nfs?
Ans. 
To mount NFS, use the 'mount' command with the NFS server IP address and the mount point on the local machine.
• Use the 'mount' command followed by the NFS server IP address and the mount point on the local machine

• For example: sudo mount 192.168.1.100:/shared_folder /mnt/nfs_share

• Ensure that the NFS server is properly configured and accessible from the local machine
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Q3. How to do patching.
Ans. 
Patching involves applying updates to software to fix vulnerabilities and improve performance.
• Identify the software that needs to be patched

• Download the appropriate patches from the vendor's website

• Test the patches in a non-production environment before applying them to production systems

• Schedule downtime for applying patches to minimize disruption

• Document the patching process for future reference
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Q4. How to rollback package
Ans. 
To rollback a package, use package manager to uninstall current version and install previous version.
• Use package manager to uninstall current version of the package

• Install the previous version of the package using package manager

• Check for any dependencies that may need to be rolled back as well
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Q5. How to remove older kernel
Ans. 
To remove older kernels in Linux, use package management tools like apt or yum.
• Use 'apt autoremove' command in Debian-based systems to remove old kernels

• Use 'yum remove ' command in Red Hat-based systems to remove old kernels

• Check available kernels with 'uname -r' command before removing
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Q1. How can I grant SFTP access exclusively to the user David?
Ans. 
Grant SFTP access exclusively to user David
• Create a new group specifically for David, e.g. 'davidgroup'

• Set the ChrootDirectory in the SSH configuration file to restrict David's access to a specific directory

• Add David to the 'davidgroup' and configure the necessary permissions for SFTP access
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Q2. How can a user be locked out after 6 unsuccessful password attempts for a duration of 30 minutes?
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To lock a user out after 6 unsuccessful password attempts for 30 minutes, modify the PAM configuration file.
• Edit the PAM configuration file (/etc/pam.d/common-auth) to include the 'pam_tally2' module.

• Set the 'deny' option in the 'pam_tally2' module to lock the user out after 6 failed attempts.

• Specify the 'unlock_time' option in the 'pam_tally2' module to set the duration of the lockout period to 30 minutes.

• Example: aut
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Q1. VPC architecture
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Q2. End to end pipeline flow
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End to end pipeline flow refers to the process of automating the deployment of software from development to production.
• Start with code development and version control

• Move to continuous integration for automated testing

• Utilize continuous delivery for deployment to staging environments

• Implement continuous deployment for automatic deployment to production

• Monitor and analyze performance and feedback for continuous improvem
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Q1. Why want to work in Tech m
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Q2. Why want to work in Tech M
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Q1. Talk about your recent AWS projects (then follow up questions on them)
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