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RedHat EX300 Exam
Red Hat Certified Engineer - RHCE (v6+v7) (Page 2 )

Updated On: 19-Jan-2026
Page 2 of 19
PDF with 88 Questions

RHCE Test Configuration Instructions
Information for the two systems you will use in test is the following:

system1.group3.example.com: is one of the main sever.
system2.group3.example.com: mainly used as a client.

Password for both of the two systems is atenorth

System’s IP is provided by DHCP, you can regard it as normal, or you can reset to Static IP in accordance with the following requirements:

system1.group3.example.com: 172.24.3.5
system2.group3.example.com: 172.24.3.10

The subnet mask is 255.255.255.0

Your system is a member of DNS domain group3.example.com. All systems in DNS domain group3.example.com are all in subnet 172.24.3.0/255.255.255.0, the same all systems in this subnet are also in group3.example.com, unless specialized, all network services required to be configured can be accessed by systems of domain group3.

host.group3.example.com provides a centralized authentication service domain
GROUP3.EXAMPLE.COM, both system1 and system2 have already been pre-configured to be the client for this domain, this domain provides the following user account:


Firewall is enabled by default, you can turn it off when deemed appropriate, other settings about firewall may be in separate requirements.

Your system will be restarted before scoring, so please ensure that all modifications and service configurations you made still can be operated after the restart without manual intervention, virtual machine instances of all examinations must be able to enter the correct multi-user level after restart without manual assistance, it will be scored zero if the test using virtual machine system cannot be restarted or be properly restarted.

Corresponding distribution packages for the testing using operating system Red Hat Enterprise Linux version can be found in the following link: http://server1.group3.example.com/rhel

Part of the requirements include host security, ensure your host security limit does not prevent the request to allow the host and network, although you correctly configured the network service but would have to allow the host or network is blocked, this also does not score.

You will notice that some requirements which clearly do not allow services be accessed by service domain my133t.org, systems of this domain are in subnet 172.25.1.0/252.255.255.0, and systems of these subnets also belong to my 133t.org domain.

PS: Notice that some test questions may depend on other exam questions, for example, you might be asked to perform a series of restrictions on a user, but this user creation may be required in other questions. For convenient identification, each exam question has some radio buttons to help you identify which questions you have already completed or not completed. Certainly, you do not need to care these buttons if you don’t need them.

Configure SELINUX
Modify the state of selinux to Enforcing mode.
Use VIM /etc/selinux

  1. Please refer to explanation for the answer.

Answer(s): A

Explanation:



One Package named zsh is dump on ftp://server1.example.com under pub directory. Install the package from ftp server.

  1. Please refer to explanation for the answer.

Answer(s): A

Explanation:

1. rpm -ivh ftp://server1.example.com/pub/zsh-*
2. Package will install

rpm command is used to install, update and remove the package, -i means install, -v means verbose and -h means display the hash mark.



Whoever creates the file on /data make automatically owner group should be the group owner of /data directory.

  1. Please refer to explanation for the answer.

Answer(s): A

Explanation:

When user creates the file/directory, user owner will be user itself and group owner will be the primary group of the user.
There is one Special Permission SGID, when you set the SGID bit on directory. When users create the file/ directory automatically owner group will be same as a parent.

1. chmod g+s /data
2. Verify using: ls -ld /data
You will get: drwxrws---



Give Full Permission to owner user and owner group member but no permission to others on /data.

  1. Please refer to explanation for the answer.

Answer(s): A

Explanation:

We can change the permission of file/directory either character symbol method or numeric method. Permission:
r-Read w-Write
x-Execute Permission Category u- Owner User g- Owner Group
o- Others
Operators
+ -> Add the Permissions
- ->Remove the Permissions = ->Assign the Permissions Numeric Method:
4 -> Read
2 -> Write
1 -> Execute
Total: 7, total for owner user, owner group member and for others: 777
1. chmod u+rwx /data
2. chmod g+rwx /data
3. chmod o-rwx /data
or
chmod 770 /data
4. Verify the /data: ls -ld /data 5 .You will get drwxrwx---



Install the Cron Schedule for jeff user to display "Hello" on daily 5:30.

  1. Please refer to explanation for the answer.

Answer(s): A

Explanation:

1. Login as a root user
2. cat >schedule.txt
30 05 * * * /bin/echo "Hello"
3. crontab -u jeff schedule.txt
4. service crond restart

The cron system is essentially a smart alarm clock. When the alarm sounds, Linux runs the commands of your choice automatically. You can set the alarm clock to run at all sorts of regular time intervals. Alternatively, the system allows you to run the command of your choice once, at a specified time in the future.

Red Hat configured the cron daemon, crond. By default, it checks a series of directories for jobs to run, every minute of every hour of every day. The crond checks the /var/spool/cron directory for jobs by user. It also checks for scheduled jobs for the computer under /etc/crontab and in the /etc/cron.d directory.

Here is the format of a line in crontab. Each of these columns is explained in more detail: #minute, hour, day of month, month, day of week, command
* * * * * command
Entries in a crontab Command Line
Field Value
Minute 0-59
Hour Based on a 24-hour clock; for example, 23 = 11 p.m.
Day of month 1-31
Month 1-12, or jan, feb, mar, etc.
Day of week 0-7; where 0 and 7 are both Sunday; or sun, mon, tue, etc.
Command: The command you want to run



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