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System Administration Fundamentals Flashcards

6 cards from real IKM practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 System Administration Fundamentals flashcards as text

  1. What is the purpose of a cron job?

    Answer: Schedule commands to run automatically at specified times

    Cron is a time-based scheduler executing commands at specified times or intervals.

  2. What does /etc/passwd contain?

    Answer: User account info: username, UID, GID, home directory, shell

    /etc/passwd contains user account information, not actual passwords.

  3. What is the difference between hard and symbolic links?

    Answer: Hard links point to the inode; symbolic links point to the file path

    Hard links share the same inode; symbolic links contain the target path.

  4. What does chmod do?

    Answer: Change file access permissions

    chmod modifies read, write, and execute permissions for owner, group, and others.

  5. What is LVM used for?

    Answer: Flexible disk storage by abstracting physical disks into logical volumes

    LVM provides flexible creation, resizing, and management of logical volumes.

  6. What is SSH key-based authentication?

    Answer: Secure password-less authentication using public-private key pairs

    SSH keys provide stronger security than passwords and enable automated logins.