EX200試験問題でリアルに更新された問題PDF
合格させる無料保証付きクイズ2024年最新の実際に出ると確認されたRedHat
Red Hat Certified System Administrator（RHCSA）試験は、Red Hat Enterprise Linuxオペレーティングシステムで動作するシステム管理者のスキルと知識を測定するパフォーマンスベースの試験です。この試験は、レッドハットシステムのインストール、構成、管理などのさまざまなタスクでシステム管理者の能力を検証するように設計されています。この試験は、オープンソースソフトウェアソリューションの大手プロバイダーの1つであるRed Hatによって実施されます。
質問 # 76
Add admin group and set gid=600
正解：
解説：
Answer see in the explanation.
Explanation/Reference:
# groupadd -g 600 admin
質問 # 77
The following command is issued on two docker nodes:
docker network create --driver bridge isolated_nw
Afterwards, one container is started at each node with the parameter --network=isolated_nw. It turns out
that the containers can not interact with each other. What must be done in order to allow the containers to
interact with each other? (Choose two correct answers.)
- A. Use a host network instead of a bridged network.
- B. Change the --networkparameter of docker create to --network=isolated_nw,nofence.
- C. Add the option --inter-containerto the docker network createcommand.
- D. Use an overlay network instead of a bridged network.
- E. Start the containers on the same node.
正解：B、E
解説：
Explanation/Reference:
Reference https://docs.docker.com/v17.09/engine/userguide/networking/#bridge-networks
質問 # 78
Part 1 (on Node1 Server)
Task 8 [Managing Local Users and Groups]
Create a user fred with a user ID 3945. Give the password as iamredhatman
正解：
解説：
* [root@node1 ~]# useradd -u 3945 fred
[root@node1 ~]# echo "iamredhatman" | passwd --stdin fred
Changing password for user fred.
passwd: all authentication tokens updated successfully
質問 # 79
Configure autofs to make sure after login successfully, it has the home directory autofs, which is shared as
/rhome/ldapuser40 at the ip: 172.24.40.10. and it also requires that, other ldap users can use the home directory normally.
正解：
解説：
see explanation below.
Explanation
# chkconfig autofs on
# cd /etc/
# vim /etc/auto.master
/rhome /etc/auto.ldap
# cp auto.misc auto.ldap
# vim auto.ladp
ldapuser40 -rw,soft,intr 172.24.40.10:/rhome/ldapuser40
* -rw,soft,intr 172.16.40.10:/rhome/&
# service autofs stop
# server autofs start
# showmount -e 172.24.40.10
# su - ladpuser40
質問 # 80
Which of the following gitcommands is used to manage files in a repository? (Choose two correct answers.)
- A. git rm
- B. git mv
- C. git move
- D. git cp
- E. git copy
正解：A、B
質問 # 81
Resize the logical volume vo and its filesystem to 290 MB. Make sure that the filesystem contents remain intact.
Note: Partitions are seldom exactly the same size requested, so a size within the range of 260 MB to 320 MiB is acceptable.
正解：
解説：
df -hT
lvextend -L +100M /dev/vg0/vo
lvscan
xfs_growfs /home/ // home is LVM mounted directory
Note: This step is only need to do in our practice environment, you do not need to do in the real exam resize2fs /dev/vg0/vo // Use this comand to update in the real exam df -hT OR e2fsck -f/dev/vg0/vo umount /home resize2fs /dev/vg0/vo required partition capacity such as 100M lvreduce -l 100M /dev/vg0/vo mount /dev/vg0/vo /home df -Ht
質問 # 82
SELinux must be running in the Enforcing mode.
正解：
解説：
see explanation below.
Explanation
getenforce // Check the current mode of SELinux // SELinux runs in enforcing mode // Check getenforce 1 getenforce vim /etc/selinux/config selinux=enforcing // To temporarily enable SELinux wg sestatus
質問 # 83
Part 2 (on Node2 Server)
Task 4 [Managing Logical Volumes]
Resize the logical volume, lvrz and reduce filesystem to 4600 MiB. Make sure the the filesystem contents remain intact with mount point /datarz (Note: partitions are seldom exactly the size requested, so anything within the range of 4200MiB to 4900MiB is acceptable)
正解：
解説：
* [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
└─vdc1 252:33 0 4.4G 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 ~]# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
lvrz vgrz -wi-ao---- 4.10g
[root@node2 ~]# vgs
VG #PV #LV #SN Attr VSize VFree
vgrz 1 1 0 wz--n- <4.15g 48.00m
[root@node2 ~]# parted /dev/vdb print
Number Start End Size Type File system Flags
1 1049kB 4456MB 4455MB primary lvm
* [root@node2 ~]# df -hT
Filesystem Type Size Used Avail Use% Mounted on
/dev/mapper/vgrz-lvrz ext4 4.0G 17M 3.8G 1% /datarz
[root@node2 ~]# parted /dev/vdb mkpart primary 4456MiB 5100MiB
[root@node2 ~]# parted /dev/vdb set 2 lvm on
[root@node2 ~]# udevadm settle
[root@node2 ~]# pvcreate /dev/vdb2
Physical volume "/dev/vdb2" successfully created.
* [root@node2 ~]# vgextend vgrz /dev/vdb2
Volume group "vgrz" successfully extended
[root@node2 ~]# lvextend -r -L 4600M /dev/vgrz/lvrz
Size of logical volume vgrz/lvrz changed from 4.10 GiB (1050 extents) to 4.49 GiB (1150 extents).
Logical volume vgrz/lvrz successfully resized.
[root@node2 ~]# resize2fs /dev/vgrz/lvrz
[root@node2 ~]# df -hT
Filesystem Type Size Used Avail Use% Mounted on
/dev/mapper/vgrz-lvrz ext4 4.4G 17M 4.2G 1% /datarz
質問 # 84
Configure the FTP service in your system, allow remote access to anonymous login and download the program by this service. Service is still running after system rebooting.
正解：
解説：
yum install vsftpd
/etc/init.d/vsftpd start
chkconfig vsftpd on
質問 # 85
Part 1 (on Node1 Server)
Task 10 [Configuring NTP/Time Synchronization]
Configure your system so that it is an NTP client of utility.domain15.example.com The system time should be set to your (or nearest to you) timezone and ensure NTP sync is configured
正解：
解説：
* [root@node1 ~]# yum install chrony
[root@node1 ~]# vim /etc/chrony.conf
pool utility.domain15.example.com iburst
[root@node1 ~]# systemctl enable chronyd
[root@node1 ~]# systemctl restart chronyd
[root@node1 ~]# systemctl status chronyd
[root@node1 ~]# tzselect
Please identify a location so that time zone rules can be set correctly.
Please select a continent, ocean, "coord", or "TZ".
1) Africa
2) Americas
3) Antarctica
4) Asia
11) TZ - I want to specify the time zone using the Posix TZ format.
#? 4
* Please select a country whose clocks agree with yours.
1) Afghanistan 18) Israel 35) Palestine
2) Armenia 19) Japan 36) Philippines
3) Azerbaijan 20) Jordan 37) Qatar
4) Bahrain 21) Kazakhstan 38) Russia
5) Bangladesh 22) Korea (North) 39) Saudi Arabia
#? 5
The following information has been given:
Bangladesh
Therefore TZ='Asia/Dhaka' will be used.
Is the above information OK?
1) Yes
2) No
#? 1
Asia/Dhaka
[root@node1 ~]# chronyc sources -v
^? utility.domain15.example> 0 7 0 - +0ns[ +0ns] +/- 0ns
質問 # 86
Configure your web services, download from http://instructor.example.com/pub/serverX.html And the services must be still running after system rebooting.
正解：
解説：
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
質問 # 87
SIMULATION
User mary must configure a task.
Requirement: The local time at 14:23 every day echo "Hello World.".
正解：
解説：
See explanation below.
Explanation/Reference:
Explanation: crontab -u mary -e
23 14 * * * echo "Hello World."
質問 # 88
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.
正解：
解説：
see explanation below.
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
質問 # 89
CORRECT TEXT
Configure the verification mode of your host account and the password as LDAP. And it can ldapuser40. The password is set as "password". And the certificate login successfully through
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.
正解：
解説：
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
質問 # 90
SIMULATION
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.
正解：
解説：
See explanation below.
Explanation/Reference:
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
質問 # 91
The user authentication has been provided by ldap domain in 192.168.0.254. According the following requirements to get ldapuser.
-LdapuserX must be able to login your system, X is your hostname number. But the ldapuser's home directory cannot be mounted, until you realize automatically mount by autofs server.
- All ldap user's password is "password".
正解：
解説：
see explanation below.
Explanation
system-config-authentication &
質問 # 92
Create the following users, groups, and group memberships:
A group named adminuser.
A user natasha who belongs to adminuser as a secondary group A user harry who also belongs to adminuser as a secondary group.
A user sarah who does not have access to an interactive shell on the system, and who is not a member of adminuser, natasha, harry, and sarah should all have the password of redhat.
正解：
解説：
groupadd sysmgrs
useradd -G sysmgrs Natasha
We can verify the newly created user by cat /etc/passwd)
# useradd -G sysmgrs harry
# useradd -s /sbin/nologin sarrh
# passwd Natasha
# passwd harry
# passwd sarrah
質問 # 93
The file index.php, which is being maintained in a git repository, was changed locally and contains an error. If
the error has not been committed to the repository yet, which of the following gitcommands reverts the local
copy of index.phpto the latest committed version in the current branch?
- A. git revert - index.php
- B. git clean - index.php
- C. git checkout - index.php
- D. git lastver - index.php
- E. git repair - index.php
正解：A
解説：
Explanation/Reference:
Reference https://git-scm.com/docs/git-revert
質問 # 94
Who ever creates the files/directories on a data group owner should automatically be in the same group owner as data.
正解：
解説：
see explanation below.
Explanation
1. chmod g+s /data
2. Verify using: ls -ld /data
Permission should be like this: drwxrws--- 2 root sysadmin 4096 Mar 16 18:08 /data 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
質問 # 95
SIMULATION
According the following requirements to create a local directory /common/admin.
This directory has admin group.
This directory has read, write and execute permissions for all admin group members.
Other groups and users don't have any permissions.
All the documents or directories created in the/common/admin are automatically inherit the admin group.
正解：
解説：
See explanation below.
Explanation/Reference:
Explanation:
mkdir -p /common/admin
chgrp admin /common/admin
chmod 2770 /common/admin
質問 # 96
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.
正解：
解説：
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>
質問 # 97
Configure a task: plan to run echo hello command at 14:23 every day.
正解：
解説：
# which echo
# crontab -e
23 14 * * * /bin/echo hello
# crontab -l (Verify)
質問 # 98
Which of the log messages below matches the following Logstash grok filter?
grok {
match => ["message", "%{SYSLOGBASE} new node %{IPORHOST:node}" ]
}
- A. Jun 30 00:36:49 headnode:
new node 198.51.100.103 at clustermanager:12353 - B. clustermanager[12353]: Jun 30 00:36:49 headnode new node 198.51.100.103
- C. %{SYSLOG-FROM:headnode clustermanager[12353]} new node 198.51.100.103
- D. Jun 30 00:36:49 headnode clustermanager[198.51.100.103]: new node
- E. Jun 30 00:36:49 headnode clustermanager[12353]: new node 198.51.100.103
正解：D
質問 # 99
Create a logical volume
Create a new logical volume as required:
Name the logical volume as database, belongs to datastore of the volume group, size is 50 PE.
Expansion size of each volume in volume group datastore is 16MB.
Use ext3 to format this new logical volume, this logical volume should automatically mount to /mnt/database
正解：
解説：
see explanation below.
Explanation
fdisk -cu /dev/vda// Create a 1G partition, modified when needed
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
Restart and check all the questions requirements.
質問 # 100
/data Directory is shared from the server1.example.com server. Mount the shared directory that:
- A. shared directory should mount on /mnt/data on your machine.
- B. when user try to access, automatically should mount
- C. when user doesn't use mounted directory should unmount automatically after 50 seconds.
正解：B
解説：
1. vi /etc/auto.master
/mnt /etc /auto.misc --timeout=50
vi /etc/auto.misc
data -rw,soft,intr server1.example.com:/data
service autofs restart
chkconfig autofs on
When you mount the other filesystem, you should unmount the mounted filesystem, Automount feature of linux helps to mount at access time and after certain seconds, when user unaccess the mounted directory, automatically unmount the filesystem.
/etc/auto.master is the master configuration file for autofs service. When you start the service, it reads the mount point as defined in /etc/auto.master.
質問 # 101
......
Red Hat EX200（Red Hat Certified System Administrator - RHCSA）認定試験は、Linuxシステム管理の分野で専門知識を示したいIT専門家向けの高く評価された認定プログラムです。この認定は、オープンソースソリューションの世界的なプロバイダーであるRed Hatによって授与されます。RHCSA認定は、Red Hat Enterprise Linux（RHEL）システムを管理する責任を持つシステム管理者のスキルと知識を検証するために設計されています。
トップクラスのEX200練習試験問題：https://jp.fast2test.com/EX200-premium-file.html
無料RHCSA EX200究極の学習ガイド：https://drive.google.com/open?id=1DjLIz9C8HDGCov52st17kck1ico-foeo