The most frequently asked Red Hat Interview Questions & Answers for Beginners

    1. What Is A Linux Server?

    A Linux server is an open source operating system that’s designed to handle the more demanding requirements of business applications such as system administration, database management and Web services.

    1. What Is The Meaning Of Red Hat?

    Red Hat is a distribution of the Linux operating system created for the business market. RHEL was previously known as Red Hat Linux Advanced Server.

    1. What Can You Type At A Command Line To Determine Which Shell You Are Using?

    echo $SHELL.

    1. Explain LVM Snapshot?

    LVM snapshots enable the administrator to build a new block device which shows an accurate copy of a logical volume, frozen at some point in time.

    1. What Is Volume Group (vg)?

    The Volume Group is the utmost level abstraction that is used within the LVM. It gathers a collection of Logical and Physical Volumes into one administrative unit.

    1. What Command Is Used To Remove The Password Assigned To A Group?

    gpasswd -r.

    1. What Is Logical Extent (le)?

    Each logical volume is split into chunks of data, known as logical extents. The extent size is the same for all logical volumes in the volume group.

    1. What Is Physical Extent (pe)?

    Each physical volume is divided chunks of data, known as physical extents; these extents have the same size as the logical extents for the volume group.

    1. What Are Lvm1 And Lvm2?

    LVM1: It is the version of LVM included in the 2.4 series kernels

    LVM2: It is another version LVM that uses device mapper driver contained in 2.6 kernel version.

    1. What Is The Difference Between LVM And Raid?

    The difference is:

    RAID gives redundancy whereas LVM doesn’t provide Redundancy.

    1. What Command Should You Use To Check The Number Of Files And Disk Space Used And Each User’s Defined Quotas?

    repquota.

    1. What Are The Process States In UNIX?

    Process States in UNIX are:

    Running: The process is either in the state of running or it is ready to run.

    Waiting: The process is waiting for a resource or for an event.

    Stopped: The process has been stopped, usually by receiving a signal.

    Zombie: The process is completed but has not been removed from the process table.

    1. How We Will Check Free Space on Drive /dev/sda With Parted Command?

    #parted /dev/sda

    print.

    1. What Is LVM?

    LVM is the abbreviation for Logical Volume Manager. It is a storage management solution that enables administrators to divide hard drive space into physical volumes (PV), which can then be combined into logical volume groups (VG), which are then divided into logical volumes (LV) on which the file system and mount point are created.

    1. What is ‘inode’?

    All UNIX files have its description stored in a structure called ‘inode’. The inode contains info about the file-size, its location, time of last access, time of last modification, permission and so on. Directories are also represented as files and have an associated inode.

    1. What can we do with “parted” Command or Utility?

    By parted command we can:

    • View the existing partition table.
    • Change the size of existing partitions.
    • Add partitions from free space or additional hard drives
    1. Tell Me The Steps To Remove The Swap File?

    Steps:

    • Firstly disable the swap file by “swapoff” command.
    • Remove Swap file entry from /etc/fstab file.
    • Now remove the swap file by “rm” command.
    1. How Do You Identify The IP Address Assigned To The Box?

    To identify IP address use ipconfig command

    1. How Do You Identify Which Version Of Red Hat Is Installed On The Server?

    Open a Red Had shell command line and type /etc./redhat-release to identify the release version for Red Hat.

    1. Which Layer in the OSI Model Is Responsible for the User’s Application When Working with an Application over the Network?

    Layer 7 is the layer responsible for application support including support for user passwords and file sharing.

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