Wipro Administrator 1 Interview Questions and Answers

To troubleshoot a server that booted up with the old kernel after a new kernel update, check the bootloader configuration, verify the kernel installation, and review the update process.

• Check the bootloader configuration to ensure it is pointing to the correct kernel version.

• Verify the kernel installation to see if the new kernel was successfully installed.

• Review the update process to identify any errors or issues that ...read more

Various commands to check CPU and Memory utilization in Linux server.

• To check CPU utilization: top, mpstat, sar

• To check Memory utilization: free, vmstat, sar -r

To add a new disk to the system using LVM, you need to initialize the disk, create a physical volume, extend the volume group, and finally extend the logical volume.

• Initialize the disk using fdisk or parted command

• Create a physical volume using pvcreate command

• Extend the volume group using vgextend command

• Extend the logical volume using lvextend command

• Resize the filesystem using resize2fs or xfs_growfs command

Experienced Linux Administrator with a passion for troubleshooting and optimizing systems.

• Over 5 years of experience managing Linux servers in a corporate environment

• Skilled in shell scripting, server configuration, and system monitoring tools like Nagios

• Strong problem-solving skills and ability to work well under pressure

• Certified in Red Hat Enterprise Linux (RHCE)

• Passionate about staying up-to-date with the latest te

Some additional skills I possess include scripting languages, troubleshooting abilities, and strong communication skills.

• Proficiency in scripting languages such as Python, Bash, or Perl can be beneficial for automating tasks and improving efficiency.

• Strong troubleshooting abilities are essential for quickly identifying and resolving issues that may arise in a Linux environment.

• Effective communication skills are importa...read more

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

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

I joined inm because of the company's reputation for innovation and growth in the tech industry.

• Attracted to company's reputation for innovation

• Excited about opportunities for growth in tech industry

• Impressed by company culture and values

Linux is an open-source operating system based on Unix, known for its stability, security, and flexibility.

• Linux is an open-source operating system that is widely used in servers, supercomputers, and embedded systems.

• There are many flavors of Linux, known as distributions, such as Ubuntu, CentOS, Debian, and Red Hat.

• Each Linux distribution has its own package management system, desktop environment, and software reposit...read more