DXC Technology Associate Professional System Administrator Interview Questions, Process, and Tips

To add and generate SSL certificate in Linux, follow these steps:

• Install OpenSSL package

• Create a private key

• Create a CSR (Certificate Signing Request)

• Submit CSR to a Certificate Authority (CA)

• Receive SSL certificate from CA

• Install SSL certificate on the server

• Configure web server to use SSL certificate

To extend a filesystem, first extend the underlying LVM volume, then use the resize2fs command. To reduce a filesystem, first unmount it, then use the resize2fs command followed by the lvreduce command.

• To extend a filesystem:

• - Extend the underlying LVM volume using lvextend command

• - Use resize2fs command to extend the filesystem

• - Example: sudo lvextend -L +10G /dev/mapper/vg01-lv01 && sudo resize2fs /dev/mapper/vg01-lv...read more

Patching methods and process involve updating software to fix vulnerabilities and improve performance.

• Patching can be done manually or automatically.

• Manual patching involves downloading and installing patches from the vendor's website.

• Automatic patching can be scheduled to run at specific times or triggered by certain events.

• Patching should be tested in a non-production environment before being applied to production sy...read more

Linux system admin roles include managing servers, networks, security, backups, and user accounts.

• Managing servers and ensuring their uptime

• Configuring and maintaining networks

• Implementing security measures to protect systems and data

• Performing backups and disaster recovery procedures

• Creating and managing user accounts and permissions

Linux is a free and open-source operating system, while Unix is a proprietary operating system.

• Linux is based on Unix but is not Unix.

• Linux is more customizable and has a larger community.

• Unix is more stable and secure, but also more expensive.

• Examples of Unix systems include Solaris and AIX.

• Examples of Linux distributions include Ubuntu and CentOS.