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The RHCSA certification is a widely recognized credential in the IT industry. It is highly valued by employers who are looking for skilled system administrators to manage their RHEL systems. Red Hat Certified System Administrator - RHCSA certification is also a stepping stone to more advanced certifications, such as the Red Hat Certified Engineer (RHCE) certification. The RHCSA certification demonstrates a commitment to excellence and a dedication to professional development.
NEW QUESTION # 15
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 # 16
SIMULATION
Download the document from ftp://instructor.example.com/pub/testfile, find all lines containing [abcde] and redirect to /MNT/answer document, then rearrange the order according the original content.
Answer:
Explanation:
See explanation below.
Explanation/Reference:
Explanation: Download the file to /tmp first
grep [abcde] /tmp/testfile > /mnt/answer
NEW QUESTION # 17
Make on /archive directory that only the user owner and group owner member can fully access.
Answer:
Explanation:
see explanation below.
Explanation
* 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
NEW QUESTION # 18
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:
# 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 # 19
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 # 20
A Dockerfilecontains the statements:
COPY data/ /data/
VOLUME /data
What happens when the resulting container is started without any additional volume configuration? (Choose
two correct answers.)
- A. Changes to files within /data/ affect the Docker image and all other containers derived from it.
- B. A new volume is created and mounted to /data/ within the new container.
- C. Files existing in /data/ in the image are not available in the running container.
- D. An error is raised because /data/ already contains data when the volume is mounted.
- E. Existing files from /data/ in the image are copied to the new volume.
Answer: B,E
NEW QUESTION # 21
Set cronjob for user natasha to do /bin/echo hiya at 14:23.
Answer:
Explanation:
# crontab -e -u natasha
23 14 * * * /bin/echo hiya
wq!
NEW QUESTION # 22
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
Answer:
Explanation:
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
NEW QUESTION # 23
Install a FTP server, and request to anonymous download from /var/ftp/pub catalog. (it needs you to configure yum direct to the already existing file server.)
Answer:
Explanation:
# cd /etc/yum.repos.d
# vim local.repo
[local]
name=local.repo
baseurl=file:///mnt
enabled=1
gpgcheck=0
# yum makecache
# yum install -y vsftpd
# service vsftpd restart
# chkconfig vsftpd on
# chkconfig --list vsftpd
# vim /etc/vsftpd/vsftpd.conf
anonymous_enable=YES
NEW QUESTION # 24
Part 2 (on Node2 Server)
Task 1 [Controlling the Boot Process]
Interrupt the boot process and reset the root password. Change it to kexdrams to gain access to the system
Answer:
Explanation:
* 1. Reboot the server pressing by Ctrl+Alt+Del
2. When the boot-loader menu appears, press the cursor keys to highlight the default boot-loader entry
3. Press e to edit the current entry.
4. Use the cursor keys to navigate to the line that starts with linux.
5. Press End to move the cursor to the end of the line.
6. Append rd.break to the end of the line.
7. Press Ctrl+x to boot using the modified configuration.
8. At the switch_root prompt
* switch_root:/# mount -o remount,rw /sysroot
switch_root:/# chroot /sysroot
sh-4.4# echo kexdrams | passwd --stdin root
Changing password for user root.
passwd: all authentication tokens updated successfully.
sh-4.4# touch /.autorelabel
sh-4.4# exit; exit
* Type exit twice to continue booting your system as usual.
NEW QUESTION # 25
You are a System administrator. Using Log files very easy to monitor the system. Now there are 50 servers running as Mail, Web, Proxy, DNS services etc. You want to centralize the logs from all servers into on LOG Server. How will you configure the LOG Server to accept logs from remote host?
Answer:
Explanation:
see explanation below.
Explanation
By default, system accept the logs only generated from local host. To accept the Log from other host configure:
vi /etc/sysconfig/syslog SYSLOGD_OPTIONS="-m 0 -r"
Where
-m 0 disables 'MARK' messages.
-r enables logging from remote machines
-x disables DNS lookups on messages received with -r
service syslog restart
NEW QUESTION # 26
SIMULATION
Binding to an external validation server.
System server.domain11.example.com provides a LDAP validation service, your system should bind to this service as required:
Base DN of validation service is dc=example,dc=com
LDAP is used for providing account information and validation information Connecting and using the certification of http://server.domain11.example.com/pub/EXAMPLE-CA-CERT to encrypt After the correct configuration, ldapuser1 can log into your system, it does not have HOME directory until you finish autofs questions, ldapuser1 password is password.
Answer:
Explanation:
See explanation below.
Explanation/Reference:
Explanation: yum -y install sssd authconfig-gtk krb5-workstation authconfig-gtk // open the graphical interface Modify user account database to ldap, fill up DN and LDAP SERVER as questions required, use TLS to encrypt connections making tick, write http://server.domain11.example.com/pub/EXAMPLE-CA-CERT to download ca, authentication method choose ldap password.
You can test if the ldapuser is added by the following command:
Id ldapuser1
Note: user password doesn't not need to set
NEW QUESTION # 27
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:
see explanation below.
Explanation
below
* iptables -F
* service iptables save
* iptables -A INPUT -s 172.25.0.0/16 -j REJECT
* service iptables save
* service iptables restart
NEW QUESTION # 28
Create a catalog under /home named admins. Its respective group is requested to be the admin group. The group users could read and write, while other users are not allowed to access it. The files created by users from the same group should also be the admin group.
Answer:
Explanation:
see explanation below.
Explanation
# cd /home/
# mkdir admins /
# chown .admin admins/
# chmod 770 admins/
# chmod g+s admins/
NEW QUESTION # 29
Download the document from ftp://instructor.example.com/pub/testfile, find all lines containing [abcde] and redirect to /MNT/answer document, then rearrange the order according the original content.
Answer:
Explanation:
see explanation below.
Explanation
Download the file to /tmp first
grep [abcde] /tmp/testfile > /mnt/answer
NEW QUESTION # 30
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".
Answer:
Explanation:
system-config-authentication &
NEW QUESTION # 31
Configure a task: plan to run echo hello command at 14:23 every day.
Answer:
Explanation:
see explanation below.
Explanation
# which echo
# crontab -e
23 14 * * * /bin/echo hello
# crontab -l (Verify)
NEW QUESTION # 32
......
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