EX200 | Red Hat EX200 Dumps Questions 2019

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NEW QUESTION 1
Configure a task: plan to run echo "file" command at 14:23 every day.

    Answer:

    Explanation: (a) Created as administrator
    # crontab -u natasha -e
    23 14 * * * /bin/echo "file"
    (b)Created as natasha
    # su - natasha
    $ crontab -e
    23 14 * * * /bin/echo "file"

    NEW QUESTION 2
    Create a collaborative directory/home/admins with the following characteristics: Group ownership of /home/admins is adminuser
    The directory should be readable, writable, and accessible to members of adminuser, but not to any other user. (It is understood that root has access to all files and directories on the system.)
    Files created in /home/admins automatically have group ownership set to the adminuser group

      Answer:

      Explanation: mkdir /home/admins
      chgrp -R adminuser /home/admins
      chmodg+w /home/admins
      chmodg+s /home/admins

      NEW QUESTION 3
      Configure your web services, download from http://instructor.example.com/pub/serverX.html And the services must be still running after system rebooting.

        Answer:

        Explanation:
        cd /var/www/html
        wget
        http://instructor.example.com/pub/serverX.html mv serverX.html index.html /etc/init.d/httpd restart chkconfig httpd on

        NEW QUESTION 4
        Create a user named alex, and the user id should be 1234, and the password should be alex111.

          Answer:

          Explanation: # useradd -u 1234 alex
          # passwd alex
          alex111
          alex111
          OR
          echo alex111|passwd -stdin alex

          NEW QUESTION 5
          Download ftp://192.168.0.254/pub/boot.iso to /root, and mounted automatically under /media/cdrom and which take effect automatically at boot-start.

            Answer:

            Explanation: # cd /root; wget ftp://192.168.0.254/pub/boot.iso
            # mkdir -p /media/cdrom
            # vim /etc/fstab
            /root/boot.iso /media/cdrom iso9660 defaults,loop 0 0
            # mount -a
            mount [-t vfstype] [-o options] device dir

            NEW QUESTION 6
            Create a swap space, set the size is 600 MB, and make it be mounted automatically after rebooting the system (permanent mount).

              Answer:

              Explanation: EX200 dumps exhibit if=/dev/zero of=/swapfile bs=1M count=600 mkswap /swapfile
              /etc/fstab:
              /swapfile swap swap defaults 0 0 mount -a

              NEW QUESTION 7
              Configure iptables, there are two domains in the network, the address of local domain is 172.24.0.0/16 other domain is 172.25.0.0/16, now refuse domain 172.25.0.0/16 to access the server.

                Answer:

                Explanation: below
                EX200 dumps exhibit iptables -F
                EX200 dumps exhibit service iptables save
                EX200 dumps exhibit iptables -A INPUT -s 172.25.0.0/16 -j REJECT
                EX200 dumps exhibit service iptables save
                EX200 dumps exhibit service iptables restart

                NEW QUESTION 8
                User mary must configure a task.
                Requirement: The local time at 14:23 every day echo "Hello World.".

                  Answer:

                  Explanation: crontab -u mary -e
                  23 14 * * * echo "Hello World."

                  NEW QUESTION 9
                  There is a local logical volumes in your system, named with common and belong to VGSRV volume group, mount to the /common directory. The definition of size is 128 MB.
                  Requirement:
                  Extend the logical volume to 190 MB without any loss of data. The size is allowed between 160-160 MB after extending.

                    Answer:

                    Explanation: lvextend -L 190M /dev/mapper/vgsrv-common resize2fs /dev/mapper/vgsrv-common

                    NEW QUESTION 10
                    Who ever creates the files/directories on archive group owner should be automatically should be the same group owner of archive.

                      Answer:

                      Explanation: EX200 dumps exhibit chmod g+s /archive
                      EX200 dumps exhibit Verify using: ls -ld /archive Permission should be like:
                      drwxrws--- 2 root sysuser 4096 Mar 16 18:08 /archive
                      If SGID bit is set on directory then who every users creates the files on directory group owner automatically
                      the owner of parent directory.
                      To set the SGID bit: chmod g+s directory
                      To Remove the SGID bit: chmod g-s directory

                      NEW QUESTION 11
                      Configure /var/tmp/fstab Permission.
                      Copy the file /etc/fstab to /var/tmp/fstab. Configure var/tmp/fstab permissions as the following:
                      Owner of the file /var/tmp/fstab is Root, belongs to group root
                      File /var/tmp/fstab cannot be executed by any user
                      User natasha can read and write /var/tmp/fstab
                      User harry cannot read and write /var/tmp/fstab
                      All other users (present and future) can read var/tmp/fstab.

                        Answer:

                        Explanation: cp /etc/fstab /var/tmp/
                        EX200 dumps exhibit /var/tmp/fstab view the owner setfacl -m u:natasha:rw- /var/tmp/fstab setfacl -m u:haryy:---
                        /var/tmp/fstab
                        Use getfacl /var/tmp/fstab to view permissions

                        NEW QUESTION 12
                        Create a new logical volume according to the following requirements:
                        The logical volume is named database and belongs to the datastore volume group and has a size of 50 extents. Logical volumes in the datastore volume group should have an extent size of 16 MB.
                        Format the new logical volume with a ext3 filesystem.
                        The logical volume should be automatically mounted under /mnt/database at system boot time.

                          Answer:

                          Explanation: fdisk -cu /dev/vda
                          partx -a /dev/vda
                          pvcreate /dev/vdax
                          vgcreate datastore /dev/vdax -s 16M
                          lvcreate-l 50 -n database datastore
                          mkfs.ext3 /dev/datastore/database
                          mkdir /mnt/database
                          mount /dev/datastore/database /mnt/database/ df -Th
                          vi /etc/fstab
                          /dev/datastore /database /mnt/database/ ext3 defaults 0 0 mount -a

                          NEW QUESTION 13
                          Search files.
                          Find out files owned by jack, and copy them to directory /root/findresults

                            Answer:

                            Explanation: mkdir/root/findfiles
                            find / -user jack -exec cp -a {} /root/findfiles/ \; ls /root/findresults

                            NEW QUESTION 14
                            Copy /etc/fstab to /var/tmp name admin, the user1 could read, write and modify it, while user2 without any permission.

                              Answer:

                              Explanation: # cp /etc/fstab /var/tmp/
                              # chgrp admin /var/tmp/fstab
                              # setfacl -m u:user1:rwx /var/tmp/fstab
                              # setfacl -m u:user2:--- /var/tmp/fstab
                              # ls -l
                              -rw-rw-r--+ 1 root admin 685 Nov 10 15:29 /var/tmp/fstab

                              NEW QUESTION 15
                              Add user: user1, set uid=601
                              Password: redhat
                              The user's login shell should be non-interactive.

                                Answer:

                                Explanation: # useradd -u 601 -s /sbin/nologin user1
                                # passwd user1
                                redhat

                                NEW QUESTION 16
                                You are new System Administrator and from now you are going to handle the system and your main task is Network monitoring, Backup and Restore. But you don't know the root password. Change the root password to redhat and login in default Runlevel.

                                  Answer:

                                  Explanation: When you Boot the System, it starts on default Runlevel specified in /etc/inittab:
                                  Id:?:initdefault:
                                  When System Successfully boot, it will ask for username and password. But you don't know the root's password. To change the root password you need to boot the system into single user mode. You can pass the kernel arguments from the boot loader.
                                  1. Restart the System.
                                  2. You will get the boot loader GRUB screen.
                                  3. Press a and type 1 or s for single mode ro root=LABEL=/ rhgb queit s
                                  4. System will boot on Single User mode.
                                  5. Use passwd command to change.
                                  6. Press ctrl+d

                                  NEW QUESTION 17
                                  SELinux must run in force mode.

                                    Answer:

                                    Explanation: /etc/sysconfig/selinux
                                    SELINUX=enforcing

                                    NEW QUESTION 18
                                    Configure your Host Name, IP Address, Gateway and DNS.
                                    Host name: station.domain40.example.com
                                    /etc/sysconfig/network
                                    hostname=abc.com
                                    hostname abc.com
                                    IP Address:172.24.40.40/24
                                    Gateway172.24.40.1
                                    DNS:172.24.40.1

                                      Answer:

                                      Explanation: # cd /etc/syscofig/network-scripts/
                                      # ls
                                      # vim ifcfg-eth0 (Configure IP Address, Gateway and DNS) IPADDR=172.24.40.40 GATEWAY=172.24.40.1
                                      DNS1=172.24.40.1
                                      # vim /etc/sysconfig/network
                                      (Configure Host Name)
                                      HOSTNAME= station.domain40.example.com
                                      OR
                                      Graphical Interfaces:
                                      System->Preference->Network Connections (Configure IP Address, Gateway and DNS) Vim
                                      /etc/sysconfig/network
                                      (Configure Host Name)

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