[2024年01月]更新のEX200試験資料RedHat学習ガイド
有効な問題最新版を試そうEX200テスト解釈EX200有効な試験ガイド
質問 # 26
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.
正解：
解説：
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
質問 # 27
Add a swap partition.
Adding an extra 500M swap partition to your system, this swap partition should mount automatically when the system starts up. Don't remove and modify the existing swap partitions on your system.
正解：
解説：
fdisk -cu /dev/vda// in the way of expanding the partition, don't make main partition partx -a /dev/vda mkswap /dev/vdax swapon /dev/vdax swapon -s vi /etc/fstab
/dev/vdaxswapswapdefaults0 0
mount -a
質問 # 28
Configure NTP.
Configure NTP service, Synchronize the server time, NTP server: classroom.example.com
正解：
解説：
Configure the client:
Yum -y install chrony
Vim /etc/chrony.conf
Add: server classroom.example.com iburst
Start: systemctl enable chronyd
systemctl restart chronyd
Validate: timedatectl status
質問 # 29
The system ldap.example.com provides an LDAP authentication service.
Your system should bind to this service as follows:
The base DN for the authentication service is dc=domain11, dc=example, dc=com LDAP is used to provide both account information and authentication information. The connection should be encrypted using the certificate at http://host.domain11.example.com/pub/domain11.crt When properly configured, ldapuserX should be able to log into your system, but will not have a home directory until you have completed the autofs requirement. Username: ldapuser11 Password: password
正解：
解説：
see explanation below.
Explanation
* system-config-authentication LDAP user DN=dc=domain11,dc=example,dc=com Server= host.domain11.example.com Certificate
http://host.domain11.example.com/pub/domain11.crt (enter url carefully, there maybe // or ..) LDAP password OK starting sssd
* su -ldapuser11 Display Bash prompt #exit
質問 # 30
CORRECT TEXT
Find the rows that contain abcde from file /etc/testfile, and write it to the file/tmp/testfile, and the sequence is requested as the same as /etc/testfile.
正解：
解説：
# cat /etc/testfile | while read line;
do
echo $line | grep abcde | tee -a /tmp/testfile
done
OR
grep `abcde' /etc/testfile > /tmp/testfile
質問 # 31
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.
正解：
解説：
see explanation below.
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
質問 # 32
Find the rows that contain abcde from file /etc/testfile, and write it to the file/tmp/testfile, and the sequence is requested as the same as /etc/testfile.
正解：
解説：
Answer see in the explanation.
Explanation/Reference:
# cat /etc/testfile | while read line;
do
echo $line | grep abcde | tee -a /tmp/testfile
done
OR
grep `abcde' /etc/testfile > /tmp/testfile
質問 # 33
What is the Puppet equivalent to an Ansible Playbook called?
- A. A Puppet Factsheet
- B. A Puppet Manifest
- C. A Puppet Declaration
- D. A Puppet Catalog
- E. A Puppet Playbook
正解：D
解説：
Explanation/Reference:
質問 # 34
Make on /archive directory that only the user owner and group owner member can fully access.
正解：
解説：
chmod 770 /archive
Verify using : ls -ld /archive Preview should be like:
drwxrwx--- 2 root sysuser 4096 Mar 16 18:08 /archive
To change the permission on directory we use the chmod command. According to the question that only the owner user (root) and group member (sysuser) can fully access the directory so: chmod 770 /archive
質問 # 35
CORRECT TEXT
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：
# 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 # 36
/data Directory is shared from the server1.example.com server. Mount the shared directory that:
- A. when user doesn't use mounted directory should unmount automatically after 50 seconds.
- B. when user try to access, automatically should mount
- C. shared directory should mount on /mnt/data on your machine.
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 # 37
SIMULATION
Configure the NTP service in your system.
正解：
解説：
See explanation below.
Explanation/Reference:
Explanation: system-config-date &
質問 # 38
SIMULATION
Please open the ip_forward, and take effect permanently.
正解：
解説：
See explanation below.
Explanation/Reference:
Explanation:
vim /etc/sysctl.conf net.ipv4.ip_forward = 1
sysctl -w (takes effect immediately)
If no "sysctl.conf" option, use these commands:
sysctl -a |grep net.ipv4
sysctl -P net.ipv4.ip_forward = 1
sysctl -w
質問 # 39
Which of the following elements are presents in a Vagrant box file? (Choose two correct answers.)
- A. A metadata file describing the box and its requirements.
- B. A Vagrant guest configuration file that is used to create instances of the box.
- C. Configuration files for provisioners such as Ansible.
- D. A base file system image in a format supported by the provider of the box.
- E. The installer for the Vagrant version which is required to run the box.
正解：A、C
質問 # 40
Add 3 users: harry, natasha, tom.
The requirements: The Additional group of the two users: harry, Natasha is the admin group. The user: tom's login shell should be non-interactive.
正解：
解説：
# useradd -G admin harry
# useradd -G admin natasha
# useradd -s /sbin/nologin tom
# id harry;id Natasha (Show additional group)
# cat /etc/passwd
(Show the login shell)
OR
# system-config-users
質問 # 41
There is a server having 172.24.254.254 and 172.25.254.254. Your System lies on 172.24.0.0/16. Make successfully ping to 172.25.254.254 by Assigning following IP: 172.24.0.x where x is your station number.
正解：
解説：
Use netconfig command
Enter the IP Address as given station number by your examiner: example: 172.24.0.1 Enter Subnet Mask Enter Default Gateway and primary name server press on ok ifdown eth0 ifup eth0 verify using ifconfig In the lab server is playing the role of router, IP forwarding is enabled. Just set the Correct IP and gateway, you can ping to 172.25.254.254.
質問 # 42
SIMULATION
There are two different networks, 192.168.0.0/24 and 192.168.1.0/24. Your System is in 192.168.0.0/24 Network. One RHEL6 Installed System is going to use as a Router. All required configuration is already done on Linux Server. Where 192.168.0.254 and 192.168.1.254 IP Address are assigned on that Server.
How will make successfully ping to 192.168.1.0/24 Network's Host?
正解：
解説：
See explanation below.
Explanation/Reference:
Explanation:
vi /etc/sysconfig/network GATEWAY=192.168.0.254
OR
vi /etc/sysconf/network-scripts/ifcfg-eth0 DEVICE=eth0
BOOTPROTO=static
ONBOOT=yes
IPADDR=192.168.0.?
NETMASK=255.255.255.0
GATEWAY=192.168.0.254
service network restart
Gateway defines the way to exit the packets. According to question System working as a router for two networks have IP Address 192.168.0.254 and 192.168.1.254.
質問 # 43
......
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Redhat Ex200（Red Hat Certified System Administrator -RHCSA）認定試験は、Red Hatが提供する非常に尊敬される認定プログラムです。この認定は、Red Hat Enterprise Linux（RHEL）システム管理の個人の知識とスキルをテストするように設計されています。認定試験は、ネットワークサービスの構成、ユーザーとグループの管理、ストレージの管理、ソフトウェアパッケージのインストールと構成など、必須のLinux管理タスクを実行する個人の能力を評価するパフォーマンスベースのテストです。
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