Oct-2022 New Version EX200 Certificate & Helpful Exam Dumps is Online
EX200 Free Certification Exam Material with 136 Q&As
Red Hat is a multinational software company founded in 1993. They provide open-source software products to businesses and also issue IT certifications to help advance careers, one of which is the Red Hat Certified System Administrator certificate that can be earned by passing EX200 test.
NEW QUESTION 54
Open kmcrl value of 5 , and can verify in /proc/ cmdline
Answer:
Explanation:
# vim /boot/grub/grub.conf
kernel/vmlinuz-2.6.32-71.el6.x86_64 ro root=/dev/mapper/GLSvg-GLSrootrd_LVM_LV=GLSvg/GLSroot rd_LVM_LV=GLSvg/GLSswaprd_NO_LUKSrd_NO_MDrd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us crashkernel=auto rhgb quiet kmcrl=5 Restart to take effect and verification:
# cat /proc/cmdline
ro root=/dev/mapper/GLSvg-GLSroot rd_LVM_LV=GLSvg/GLSroot rd_LVM_LV=GLSvg/GLSswap rd_NO_LUKS rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us rhgb quiet kmcrl=5
NEW QUESTION 55
Create a volume group, and set 16M as a extends. And divided a volume group containing 50 extends on volume group lv, make it as ext4 file system, and mounted automatically under /mnt/data.
Answer:
Explanation:
# pvcreate /dev/sda7 /dev/sda8
# vgcreate -s 16M vg1 /dev/sda7 /dev/sda8
# lvcreate -l 50 -n lvm02
# mkfs.ext4 /dev/vg1/lvm02
# blkid /dev/vg1/lv1
# vim /etc/fstab
# mkdir -p /mnt/data
UUID=xxxxxxxx /mnt/data ext4 defaults 0 0
# vim /etc/fstab
# mount -a
# mount
(Verify)
NEW QUESTION 56
SIMULATION
Install the Kernel Upgrade.
Install suitable kernel update from:
http://server.domain11.example.com/pub/updates.
Following requirements must be met:
Updated kernel used as the default kernel of system start-up.
The original kernel is still valid and can be guided when system starts up.
Answer:
Explanation:
See explanation below.
Explanation/Reference:
Explanation: Using the browser open the URL in the question, download kernel file to root or home directory.
uname -r// check the current kernel version
rpm -ivh kernel-*.rpm
vi /boot/grub.conf// check
Some questions are: Install and upgrade the kernel as required. To ensure that grub2 is the default item for startup.
Yum repo : http://content.example.com/rhel7.0/x86-64/errata
OR
uname -r // check kernel
Yum-config-manager --add-repo="http://content.example.com/rhel7.0/x86-64/ errata" Yum clean all Yum list kernel// install directly Yum -y install kernel// stuck with it, do not pipe! Please do not pipe!
Default enable new kernel grub2-editenv list// check
Modify grub2-set-default "kernel full name"
Grub2-mkconfig -o/boot/grub2/grub.cfg// Refresh
NEW QUESTION 57
Create a volume group, and set 16M as a extends. And divided a volume group containing 50 extends on volume group lv, make it as ext4 file system, and mounted automatically under /mnt/data.
Answer:
Explanation:
see explanation below.
Explanation
# pvcreate /dev/sda7 /dev/sda8
# vgcreate -s 16M vg1 /dev/sda7 /dev/sda8
# lvcreate -l 50 -n lvm02
# mkfs.ext4 /dev/vg1/lvm02
# blkid /dev/vg1/lv1
# vim /etc/fstab
# mkdir -p /mnt/data
UUID=xxxxxxxx /mnt/data ext4 defaults 0 0
# vim /etc/fstab
# mount -a
# mount
(Verify)
NEW QUESTION 58
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 59
Find the files owned by harry, and copy it to catalog: /opt/dir
Answer:
Explanation:
# cd /opt/
# mkdir dir
# find / -user harry -exec cp -rfp {} /opt/dir/ \;
NEW QUESTION 60
Part 2 (on Node2 Server)
Task 3 [Managing Logical Volumes]
Create a new volume group in the name of datavg and physical volume extent is 16 MB Create a new logical volume in the name of datalv with the size of 250 extents and file system must xfs Then the logical volume should be mounted automatically mounted under /data at system boot time
Answer:
Explanation:
* [root@node2 ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
vdb 252:16 0 5G 0 disk
└─vdb1 252:17 0 4.2G 0 part
└─vgrz-lvrz 253:2 0 4.1G 0 lvm /datarz
vdc 252:32 0 5G 0 disk
vdd 252:48 0 5G 0 disk
vde 252:64 0 10G 0 disk
[root@node2 ~]# parted /dev/vdc mklabel msdos
[root@node2 ~]# parted /dev/vdc mkpart primary 1MiB 4200MiB
[root@node2 ~]# parted /dev/vdc set 1 lvm on
* [root@node2 ~]# udevadm settle
[root@node2 ~]# pvcreate /dev/vdc1
Physical volume "/dev/vdc1" successfully created.
[root@node2 ~]# vgcreate -s 16M datavg /dev/vdc1
Volume group "datavg" successfully created
[root@node2 ~]# lvcreate -n datalv -L 4000M datavg
Logical volume "datalv" created.
[root@node2 ~]# mkfs.xfs /dev/datavg/datalv
[root@node2 ~]# mkdir /data
[root@node2 ~]# blkid
/dev/mapper/datavg-datalv: UUID="7397a292-d67d-4632-941e-382e2bd922ce" BLOCK_SIZE="512" TYPE="xfs"
* [root@node2 ~]# vim /etc/fstab
UUID=7397a292-d67d-4632-941e-382e2bd922ce /data xfs defaults 0 0
[root@node2 ~]# mount UUID=7397a292-d67d-4632-941e-382e2bd922ce /data
[root@node2 ~]# reboot
[root@node2 ~]# df -hT
Filesystem Type Size Used Avail Use% Mounted on
/dev/mapper/datavg-datalv xfs 3.9G 61M 3.9G 2% /data
NEW QUESTION 61
Part 1 (on Node1 Server)
Task 11 [Scheduling Future Tasks]
The user natasha must configure a cron job that runs daily at 14:23 local time and also the same cron job will run after every 2 minutes and executes:
/bin/echo hello
Answer:
Explanation:
* [root@node1 ~]# crontab -l -u natasha
no crontab for natasha
[root@node1 ~]# crontab -e -u natasha
23 14 * * * /bin/echo hello
*/2 * * * * /bin/echo 2min
crontab: installing new crontab
[root@node1 ~]# crontab -l -u natasha
23 14 * * * /bin/echo hello
*/2 * * * * /bin/echo 2min
[root@node1 ~]# systemctl status crond.service
* ### For Checking ###
[root@node1 ~]# tail -f /var/log/cron
Mar 23 13:23:48 node1 crontab[10636]: (root) REPLACE (natasha)
Mar 23 13:23:48 node1 crontab[10636]: (root) END EDIT (natasha)
Mar 23 13:23:50 node1 crontab[10638]: (root) LIST (natasha)
Mar 23 13:24:01 node1 crond[1349]: (root) FAILED (loading cron table)
Mar 23 13:24:02 node1 CROND[10673]: (natasha) CMD (/bin/echo 2min)
NEW QUESTION 62
Configure
a HTTP server, which can be accessed through http://station.domain40.example.com.
Please
download the released page from http://ip/dir/example.html.
Answer:
Explanation:
see explanation below.
Explanation
# yum install -y httpd
# chkconfig httpd on
# cd /var/www/html
#
wget http://ip/dir/example.html
# cp example.com index.html
# vim /etc/httpd/conf/httpd.conf
NameVirtualHost 192.168.0.254:80
<VirtualHost 192.168.0.254:80>
DocumentRoot /var/www/html/
ServerName station.domain40.example.com
</VirtualHost>
NEW QUESTION 63
Search a String
Find out all the columns that contains the string seismic within /usr/share/dict/words, then copy all these columns to /root/lines.tx in original order, there is no blank line, all columns must be the accurate copy of the original columns.
Answer:
Explanation:
grep seismic /usr/share/dict/words> /root/lines.txt
NEW QUESTION 64
Configure your system so that it is an NTP client of server.domain11.example.com
Answer:
Explanation:
see explanation below.
Explanation
#system-config-date
Note: dialog box will open in that
Check mark Synchronize date and time over network. Remove all the NTP SERVER and click ADD and type server.domain11.example.com
****************And then press ENTER and the press OK***************
NEW QUESTION 65
SIMULATION
There are two different networks 192.168.0.0/24 and 192.168.1.0/24. Where 192.168.0.254 and
192.168.1.254 IP Address are assigned on Server. Verify your network settings by pinging 192.168.1.0/24 Network's Host.
Answer:
Explanation:
See explanation below.
Explanation/Reference:
Explanation:
vi /etc/sysconfing/network NETWORKING=yes HOSTNAME=station?.example.com GATEWAY=192.168.0.254 service network restart
2.vi /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0
ONBOOT=yes
BOOTPROTO=static
IPADDR=X.X.X.X
NETMASK=X.X.X.X
GATEWAY=192.168.0.254
ifdown eth0
ifup eth0
NEW QUESTION 66
Adjust the size of the Logical Volume.
Adjust the size of the vo Logical Volume, its file system size should be 290M. Make sure that the content of this system is complete.
Note: the partition size is rarely accurate to the same size as required, so in the range 270M to 320M is acceptable.
Answer:
Explanation:
Addition
df -hT
lvextend -L +100M /dev/vg0/vo
Lvscan
xfs_growfs /home/ //home is the mounted directory of the LVM, this step just need to do in the practice environment, and test EXT4 does not need this step.
resize2fs /dev/vg0/vo// use this command to update in examination.
df -hT
OR
Subtraction
e2fsck -f/dev/vg0/vo
umount /home
resize2fs /dev/vg0/vo // the final required partition capacity is 100M lvreduce -l 100M /dev/vg0/vo mount /dev/vg0/vo/home df -hT
NEW QUESTION 67
Create a Shared Directory.
Create a shared directory /home/admins, make it has the following characteristics:
/home/admins belongs to group adminuser
This directory can be read and written by members of group adminuser Any files created in /home/ admin, group automatically set as adminuser.
Answer:
Explanation:
mkdir /home/admins
chgrp -R adminuser /home/admins
chmodg+w /home/admins
chmodg+s /home/admins
NEW QUESTION 68
What statement is true regarding the Swarm service created by the following command?
docker service create --name myweb --network webnet --mode global nginx
- A. It runs exactly once on each node in a Swarm.
- B. It runs on one node by default and can be scaled to an arbitrary number of replicas.
- C. It runs on all nodes which provide the network webnet.
- D. It runs exactly one time in the Swarm and cannot be scaled.
- E. It runs only on those nodes which support the network type global.
Answer: B
Explanation:
Explanation/Reference:
NEW QUESTION 69
SIMULATION
User mary must configure a task.
Requirement: The local time at 14:23 every day echo "Hello World.".
Answer:
Explanation:
See explanation below.
Explanation/Reference:
Explanation: crontab -u mary -e
23 14 * * * echo "Hello World."
NEW QUESTION 70
Configure a user account.
Create a user iaruid is 3400. Password is redhat
Answer:
Explanation:
see explanation below.
Explanation
useradd -u 3400 iar
passwd iar
NEW QUESTION 71
Configure a task: plan to run echo "file" command at 14:23 every day.
Answer:
Explanation:
see explanation below.
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 72
SIMULATION
There is a local logical volumes in your system, named with shrink and belong to VGSRV volume group, mount to the /shrink directory. The definition of size is 320 MB.
Requirement:
Reduce the logical volume to 220 MB without any loss of data. The size is allowed between 200-260 MB after reducing.
Answer:
Explanation:
See explanation below.
Explanation/Reference:
Explanation: cd;umount /shrink
e2fsck -f /dev/mapper/vgsrv-shrink
resize2fs /dev/mapper/vgsrv-shrink 220M
lvreduce -L 220M /dev/mapper/vgsrv-shrink
mount -a
NEW QUESTION 73
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