Red Hat EX200 Online Practice Questions and Exam Preparation

Red Hat EX200 Online Questions & Answers

• Question 11:

  Your System is going to use as a Router for two networks. One Network is 192.168.0.0/24 and Another Network is 192.168.1.0/24. Both network's IP address has assigned. How will you forward the packets from one network to another network?

  Correct Answer. Check the anser in explanation.
  Check the anser in explanation.

  ---

  1.

  echo "1" >/proc/sys/net/ipv4/ip_forward

  2.

  vi /etc/sysctl.conf

  net.ipv4.ip_forward = 1 If you want to use the Linux System as a Router to make communication between different networks, you need enable the IP forwarding. To enable on running session just set value 1 to /proc/sys/net/ipv4/ip_forward. As well as automatically turn on the IP forwarding features on next boot set on /etc/sysctl.conf file.

• Question 12:

  Configure the verification mode of your host account and the password as LDAP. And it can login successfully through ldapuser40. The password is set as "password".

  And the certificate can be downloaded from http://ip/dir/ldap.crt. After the user logs on the user has no host directory unless you configure the autofs in the following questions.

  Correct Answer. Check the anser in explanation.
  Check the anser in explanation.

  ---

  system-config-authentication LDAP Server: ldap//instructor.example.com (In domain form, not write IP) OR # yum groupinstall directory-client (1.krb5-workstation 2.pam-krb5 3.sssd) # system-config-authentication 1.User Account Database: LDAP 2.LDAP Search Base DN: dc=example,dc=com 3.LDAP Server: ldap://instructor.example.com (In domain form, not write IP) 4.Download CA Certificate 5.Authentication Method: LDAP password 6.Apply getent passwd ldapuser40

• Question 13:

  Create a volume group, and set 8M as a extends. Divided a volume group containing 50 extends on volume group lv (lvshare), make it as ext4 file system, and mounted automatically under /mnt/data. And the size of the floating range should set between 380M and 400M.

  Correct Answer. Check the anser in explanation.
  Check the anser in explanation.

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  # fdisk # partprobe # pvcreate /dev/vda6 # vgcreate -s 8M vg1 /dev/vda6 -s # lvcreate -n lvshare -l 50 vg1 -l # mkfs.ext4 /dev/vg1/lvshare # mkdir -p /mnt/data # vim /etc/fstab /dev/vg1/lvshare /mnt/data ext4 defaults 0 0 # mount -a # df -h

• Question 14:

  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

  Correct Answer. Check the anser in explanation.
  Check the anser in 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)

• Question 15:

  One Logical Volume is created named as myvol under vo volume group and is mounted. The Initial Size of that Logical Volume is 400MB. Make successfully that the size of Logical Volume 200MB without losing any data. The size of logical volume 200MB to 210MB will be acceptable.

  Correct Answer. Check the anser in explanation.
  Check the anser in explanation.

  ---

  First check the size of Logical Volume: lvdisplay /dev/vo/myvol Make sure that the filesystem is in a consistent state before reducing: # fsck -f /dev/vo/myvol Now reduce the filesystem by 200MB. # resize2fs /dev/vo/myvol 200M It is now possible to reduce the logical volume. #lvreduce /dev/vo/myvol -L 200M Verify the Size of Logical Volume: lvdisplay /dev/vo/myvol Verify that the size comes in online or not: df -h

• Question 16:

  Configure the NTP service in your system.

  Correct Answer. Check the anser in explanation.
  Check the anser in explanation.

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  system-config-date and

  

• Question 17:

  Part 2 (on Node2 Server)

  Task 5 [Managing Logical Volumes]

  Add an additional swap partition of 656 MiB to your system. The swap partition should automatically mount when your system boots

  Do not remove or otherwise alter any existing swap partition on your system

  Correct Answer. Check the anser in explanation.
  Check the anser in explanation.

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  * [root@node2 ~]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT vdc 252:32 0 5G 0 disk vdc1 252:33 0 4.1G 0 part datavg-datalv 253:3 0 3.9G 0 lvm /data vdd 252:48 0 5G 0 disk vde 252:64 0 10G 0 disk [root@node2 ~]# swapon -s Filename Type Size Used Priority /dev/dm-1 partition 2097148 1548 -2 [root@node2 ~]# free -m total used free shared buff/cache available Mem: 1816 1078 104 13 633 573 Swap: 2047 1 2046 [root@node2 ~]# parted /dev/vdc print Number Start End Size Type File system Flags 1 1049kB 4404MB 4403MB primary lvm

  * [root@node2 ~]# parted /dev/vdc mkpart primary linux-swap 4404MiB 5060MiB [root@node2 ~]# mkswap /dev/vdc2 Setting up swapspace version 1, size = 656 MiB (687861760 bytes) no label, UUID=9faf818f-f070-4416-82b2-21a41988a9a7 [root@node2 ~]# swapon -s Filename Type Size Used Priority /dev/dm-1 partition 2097148 1804 -2 [root@node2 ~]# swapon /dev/vdc2

  * [root@node2 ~]# swapon -s Filename Type Size Used Priority /dev/dm-1 partition 2097148 1804 -2 /dev/vdc2 partition 671740 0 -3 [root@node2 ~]# blkid /dev/vdc2: UUID="9faf818f-f070-4416-82b2-21a41988a9a7" TYPE="swap" PARTUUID="0f22a35f-02" [root@node2 ~]# vim /etc/fstab UUID=9faf818f-f070-4416-82b2-21a41988a9a7 swap swap defaults 0 0 [root@node2 ~]# reboot [root@node2 ~]# swapon -s Filename Type Size Used Priority /dev/dm-1 partition 2097148 1804 -2 /dev/vdc2 partition 671740 0 -3

• Question 18:

  Your System is configured in 192.168.0.0/24 Network and your nameserver is 192.168.0.254. Make successfully resolve to server1.example.com.

  Correct Answer. Check the anser in explanation.
  Check the anser in explanation.

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  nameserver is specified in question,

  1.

  Vi /etc/resolv.conf nameserver 192.168.0.254

  2.

  host server1.example.com

• Question 19:

  Search files.

  Find out files owned by jack, and copy them to directory /root/findresults

  Correct Answer. Check the anser in explanation.
  Check the anser in explanation.

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

• Question 20:

  SELinux must run in force mode.

  Correct Answer. Check the anser in explanation.
  Check the anser in explanation.

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  /etc/sysconfig/selinux SELINUX=enforcing