EX300 Dumps & Test Certification  EX300 Cost
                      
 
RedH at
EX300 
Red Hat Certified Engineer – RHCE (v6+v7)
  
  
 
 
 
 
 
 
Question: 1  
 
CORRECT TEXT 
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 
 
Answer:  
 
 
 
Question: 2  
 
CORRECT TEXT 
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 the SSH Access as required: 
Users can visit your two virtual machine systems via clients of domain group3.example.com through SSH 
remote. 
 
Answer:  
 
Solution 1: 
Modify file /etc/hosts.allow 
Add a line: sshd: 172.24.11. 
Modify file /etc/hosts.deny 
Add a line: sshd: 172.25.0. 
Both of them need to be configured. 
Solution 2: 
Add a firewall 
firewall-cmd –zone=block --add-source=172.25.11.0/24 --permanent firewall-cmd –reload 
Both of them need to be configured 
 
Question: 3  
 
CORRECT TEXT 
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. 
Customize the User Environment 
Create a custom command on system1 and system2 named as qstat, and this custom command will 
execute the following command: 
/bin/ps - Aopid,tt,user,fname,rsz 
This command is valid for all users in the system. 
 
Answer:  
 
 
 
// You need to configure that on both two systems - 
 
Question: 4  
 
CORRECT TEXT 
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 port forwarding on the system1, as required: 
1. The systems in the network 172.24.11.0/24, local port 5423 for accessing system1 will be forwarded 
to 80 
(2) This setting must be permanent 
 
Answer:  
 
Use Graphical interface to configure 
Use firewall-config to open the Graphical interface in CLI 
Adjust the configuration: drop-down menu to permanent 
Add a strategy to the public area of the “Port Forwarding” 
 
 
systemctl restart firewalld.service // Reload the firewall strategy 
 
Question: 5  
 
CORRECT TEXT 
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 Link Aggregation 
Configure a link between systeml.group3.example.com and system2. group3.example.com as required: 
This link uses interfaces eth1 and eth2 
This link still can work when one interface failes 
This link uses the following address 172.16.3.20/255.255.255.0 on systeml 
This link uses the following address 172.16.3.25/255.255.255.0 on system2 
This link remains normal after the system is restarted 
 
Answer:  
 
 
If you forget how to write the name, you can search examples in /var/share/doc/team-
1.9/example_configs/ 
 
 
Question: 6  
 
CORRECT TEXT 
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 IPV6 Address 
Configure interface eth0 on your test system, using the following IPV6 addresses: 
1) The address of system1 should be 2003:ac18::305/64 
(2) The address of system2 should be 2003:ac18::30a/64 
(3) Both two systems must be able to communicate with systems in network 2003:ac18/64 
(4) The address must still take effect after restart 
(5) Both two systems must maintain the current Ipv4 address and can communicate 
 
Answer:  
 
Solution: 
 
 
 
Question: 7  
 
CORRECT TEXT 
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 the Local Mail Service 
Configure the mail service on system1 and system2, as required: 
1. These systems do not accept external sending mails 
2. Any mails sent locally are automatically routed to rhgls.domain11.example.com 
3. Mails sent from these systems will be displayed from rhgls.domain11.example.com 
4. You can send mail to local user ‘arthur’ to test your configuration system 
rhgls.domain11.example.com 
5. You have already configured this user’s mail to the following URL 
rhgls.domain11.example.com/received_mail/11 
 
Answer:  
 
solution 
 
Open rhgls.domain11.example.com/received_mail/11 in a browser 
 
Question: 8  
 
CORRECT TEXT 
 
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. 
Share directories via SMB. 
Configure the SMB service on the system1. 
Your SMB server must be a member of the STAFF Working Group. 
Share the folder /common and the name must be common. 
 
Only clients of domain11.example.com can access the common share. 
Common must be able to browse. 
User Andy must be able to read the content of the share, if necessary, verification code is redhat. 
 
Answer:  
 
system1: 
 
system2: 
 
Question: 9  
 
CORRECT TEXT 
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 Multi-User SMB Mounts. 
Share the directory /devops through SMB on the systeml, as required: 
1. The share name is devops 
2. The shared directory devops just can be used by clients in domain11.example.com 
3. The shared directory devop must be able to be browsed 
4. User silene must be able to access this share through read, access code is redhat 
 
5. User akira must be able to access this share through read and write, access code is redhat 
6. This share permanently mount to system2. domain11.example.com the user /mnt/dev, make user 
silene as authentication any users can get temporary write permissions from akira 
 
Answer:  
 
system1： 
 
system2: 
 
Switch to user akira on the system2, access to /mnt/dev and view files 
suakira cd /mnt/dev 
lscifscreds add 
system1 touch 1 
 
Question: 10  
 
CORRECT TEXT 
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 NFS service 
Configure the NFS service on the system1, as required: 
1. Share the directory /public in read only way, just can be accessed by systems in 
domain11.example.com at the same time. 
2. Share the directory /protected in rad and write way, Kerberos security encryption required, you can 
use the key provided by the following URL: 
http://host.domain11.example.com/materials/nfs_server.keytab 
3. The directory /protected should contain the sub directory named project and the owner name is 
deepak; 
4. User deepak can access /protected/project in read and write ways 
Answer:  
system1: