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Category: Linux Interview Questions

Firewall

1.What is a firewall and how does it work? A) A firewall is a network security device/software that monitors and controls incoming and outgoing traffic based on predefined rules.It acts [ … ]

SSH (Secure Shell)

1. What is SSH? A) SSH (Secure Shell) is a cryptographic network protocol used to securely access and manage remote systems over an unsecured network. It encrypts all communication between [ … ]

YUM & RPM

YUM (Yellowdog Updater, Modified) 1. What is YUM in Linux? A) YUM is a package manager used in RHEL/CentOS/Fedora systems to install, update, and manage software packages automatically with dependency [ … ]

Crontab

1. What is crontab used for in Linux? A) crontab schedules tasks (cron jobs) to run automatically at specific times or intervals. 2. What is the syntax of a crontab [ … ]