Linux Administration Bootcamp: Go from Beginner to Advanced - Installing CentOS Linux from Scratch

This tutorial covers the manual installation of CentOS on a virtual machine using VirtualBox. It begins with prerequisites and downloading the CentOS ISO file, followed by creating a virtual machine and installing CentOS. Post-installation steps include configuring the system and optionally installing VirtualBox Guest Additions to enhance performance. The tutorial provides detailed instructions and troubleshooting tips for each step.

What is the primary reason for downloading the CentOS Linux DVD ISO?

• It is the smallest available ISO file.

• It includes the latest development tools.

• It is a rolling release version.

• It is based on the latest stable Red Hat enterprise release.

What should you do if you don't see the Red Hat 64-bit option in VirtualBox?

• Reinstall VirtualBox.

• Download a different CentOS ISO.

• Enable hardware acceleration in BIOS.

• Use a different virtualization software.

What is the recommended minimum amount of RAM for the CentOS virtual machine?

• 4096 MB

• 2048 MB

• 1024 MB

• 512 MB

Which option should you choose for better performance when creating a virtual hard drive?

• VDI format

• Fixed size

• VHD format

• Dynamically allocated

What should you do if CentOS considers your chosen root password to be weak?

• Press 'done' twice to confirm.

• Choose a different password.

• Use the default password 'admin'.

• Skip the password setup.

What is the purpose of setting a user as an administrator during CentOS installation?

• To prevent the user from accessing the root account.

• To enable the user to create additional user accounts.

• To restrict the user's access to system settings.

• To allow the user to install software and perform administrative tasks.

What should you do if the CentOS installation screen appears again after rebooting?

• Reinstall CentOS.

• Force unmount the ISO from the virtual drive.

• Restart the virtual machine.

• Check the network settings.

What is the main benefit of installing VirtualBox Guest Additions?

• It allows CentOS to run on physical hardware.

• It enables the Linux desktop to conform to the virtual machine window size.

• It provides additional software development tools.

• It improves the network performance of the virtual machine.

What command is used to install the necessary package for VirtualBox Guest Additions?

• sudo dnf install elfutils-libelf-devel

• sudo apt-get install virtualbox-guest-additions

• sudo pacman -S virtualbox-guest-additions

• sudo yum install virtualbox-guest-additions

What should you do if you encounter a typing mistake while entering a command in the terminal?

• Use a different command.

• Restart the terminal session.

• Re-enter the command with the correct syntax.

• Ignore the error and proceed.