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Very Useful RedHat EX300 Question Answers (q1-q13) Online Practice Test
QUESTION 1
SIMULATION
RHCE Test Configuration Instructions
Information for the two systems you will use in the 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 north
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.
Create a script to add users
Create a script named /root/mkusers on the system1, this script can achieve to add local users for the system1, and
user names of these users are all from a file which contains the usernames list, and meet the following requirements at
the same time:
1.
This script is required to provide a parameter; this parameter is the file which contains the usernames list
2.
This script need provide the following message: Usage /root/mkusers if it does not provide a parameter, then exit and
return the corresponding value
3.
This script need provide the following message: Input file not found if it provides a name that does not exist, then exit
and return the corresponding value
4.
Create a user shell log into /bin/false
5.
This script does not need to set password for users
6.
You can get the usernames list from the following URL as a test: http://rhgls. domain11.example.com/materials/
userlist
A. explanation
Correct Answer: A
QUESTION 2
SIMULATION
There were two systems: system1, main system on which most of the configuration take place system2, some
configuration here
Script2. Create a script on serverX called /root/createusers When this script is called with the argument, it should add all
the users from the file Download the file from http://station.network0.example.com/pub/testfile All users should have the
login shell as /bin/false, password not required When this script is called with any other argument, it should print the
message as “Input File Not Found” When this script is run without any argument, it should display
“Usage:/root/createusers” NOTE: if the users are added no need to delete
A. explanation
Correct Answer: A
QUESTION 3
SIMULATION
There were two systems:
system1, main system on which most of the configuration take place
system2, some configuration here
SSH configuration.
Configure SSH access on your virtual hosts as follows.
Clients within my22ilt.org should NOT have access to ssh on your systems
A. explanation
Correct Answer: A
QUESTION 4
SIMULATION
There were two systems: system1, main system on which most of the configuration take place system2, some
configuration here
Secured webserver. Configure the website https://serverX.example.com with TLS SSLCertificate file
http://classroom.example.com/pub/rhce/tls/certs/system1.networkX.crt SSLCertificatekeyfile
http://classroom.example.com/pub/rhce/tls/private/system1.networkX.key SSL CA certificate file
http://classroom.example.com/pub/example-ca.crt
A. explanation
Correct Answer: A
QUESTION 5
SIMULATION
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
A. explanation
Correct Answer: A
If you forget how to write the name, you can search examples in /var/share/doc/team-1.9/example_configs/
QUESTION 6
SIMULATION
RHCE Test Configuration Instructions
Information for the two systems you will use in the 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 north
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 Access to the Web Content Create a directory private under the directory DocumentRoot in the web
server on the system1, requirements are the following: Download a file copy to this directory from
http://rhgls.domain11.example.com/materials/private.html and rename it as index.html. Don\\’t make any changes to this
file content Any users from the system1 can browse the content of the private, but cannot access this directory content
through other systems
A. explanation
Correct Answer: A
QUESTION 7
SIMULATION
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 iSCSI Clients
Configure the system2 to make it can link to iqn.2014-09.com.example.domain11:system1 provided by the system,
meet the following requirements at the same time:
1. iSCSI device automatically loads during the system start-up.
Block device iSCSI contains a 2100MIB partition, and is formatted as ext4.
This partition mount to the /mnt/data and mount automatically during the system start-up.
A. explanation
Correct Answer: A
QUESTION 8
SIMULATION
You are giving RHCE exam. Examiner gave you the Boot related problem and told to you that make successfully boot
the System. When you started the system, System automatically asking the root password for maintenance. How will
you fix that problem?
A. explanation
Correct Answer: A
Please see explanation Maintenance mode also known as emergency mode. System boots on emergency mode when
file system error occurred. It is due to unknown partition, bad filesystem specified in /etc/fstab. To solve follow the
steps:
QUESTION 9
SIMULATION
Download file from http://ip/dir/restircted.html, and the local user harry can access it by
http://station.domain30.example.com/restircted.html, and cannot be accessed by t3gg.com.
A. explanation
Correct Answer: A
QUESTION 10
SIMULATION
There were two systems:
system1, main system on which most of the configuration take place system2,
some configuration here
Configure port forwarding.
Configure server X to forward traffic incoming on port 80/tcp from source network 172.25.X.0/255.255.255.0 to port on
5243/tcp.
A. explanation
Correct Answer: A
QUESTION 11
SIMULATION
Configure a mail alias to your MTA, for example, send emails to harry but mary actually is receiving emails.
A. explanation
Correct Answer: A
Notice:
This problem is a trap. The question no 31 requires that harry must be able to receive remote emails but the problems in
the question no 32 requires mary to receive harry\\’s emails. So harry must be added when you are deploying aliases.
QUESTION 12
SIMULATION
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 – Ao pid,tt,user,fname,rsz
This command is valid for all users in the system.
A. explanation
Correct Answer: A
QUESTION 13
SIMULATION
There were two systems:
system1, main system on which most of the configuration take place
system2, some configuration here
Script1.
Create a script on serverX called /root/random with the following details
When run as /root/random postconf, should bring the output as “postroll”
When run as /root/random postroll, should bring the output as “postconf”
When run with any other argument or without argument, should bring any other argument or without argument, should
bring the stderr as “/root/random postconf|postroll”
A. explanation
Correct Answer: A
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