EX300 | Red Hat EX300 Exam Dumps 2021
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NEW QUESTION 1
Configure ssh to allow user harry to access, reject the domain t3gg.com (172.25.0.0/16) to access.
Answer:
Explanation: 
NEW QUESTION 2
In accordance with the following requirements, share /common directory through smb service.
-- your sub service must be in the SAMBA working-set
-- the shared name of common is common
-- the common share just can be shared by the customers in the example.com domain
-- the common must be available for browsing
-- mary must be able to login to the SMB share and for read operation, “password” is the secret code if it need to be verified.
Answer:
Explanation: 
NEW QUESTION 3
Make on /storage directory that only the user owner and group owner member can fully access.
Answer:
Explanation: chmod 770 /storage
Verify using : ls -ld /storage
Note:
Preview should be like: drwxrwx--- 2 root sysusers 4096 Mar 16 18:08 /storage
To change the permission on directory we use the chmod command. According to the question that only the owner user (root) and group member (sysusers) can fully access the directory so:
chmod 770 /archive
NEW QUESTION 4
Given the kernel of a permanent kernel parameters: sysctl=1. It can be shown on cmdline after restarting the system. Kernel of /boot/grub/grub.conf should be a34dded finally, as:
Answer:
Explanation: 
NEW QUESTION 5
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?
Answer:
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:
NEW QUESTION 6
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:
Explanation: 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
NEW QUESTION 7
Configure the ftp to allow anonymously download the directory /var/ftp/pub, and reject the domain t3gg.com to access.
Answer:
Explanation: 
NEW QUESTION 8
Give Full Permission to owner user and owner group member but no permission to others on /data.
Answer:
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---
NEW QUESTION 9
Connect to the email server and send email to admin, and it can be received by harry.
Answer:
Explanation: 
NEW QUESTION 10
Create a Shell script /root/program:
The shell script will come back to “user” parameter when you are entering “kernel” parameter.
The shell script will come back to “kernel” when you are entering “user” parameter.
It will output the standard error when this script “usage:/root/program kernel|user” don’t input any parameter or the parameter you inputted is entered as the requirements.
Answer:
Explanation: 
NEW QUESTION 11
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 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
Answer:
Explanation: 
NEW QUESTION 12
There were two systems:
system1, main system on which most of the configuration take place
system2, some configuration here
Configure smb access.
Share the /sambadir directory via SMB on serverX
Your SMB server must be a member of the TESTGROUP workgroup
The share name must be data
The data share must be available to example.com domain clients only
The data share must be browseable
susan must have read access to the share, authenticating with the same password “password”, if necessary
Configure the serverX to share /opstack with SMB share name must be cluster
The user frankenstein has readable, writeable, accessable to the /opstack SMB share
Both users should have the SMB passwd “SaniTago”
Answer:
Explanation: 
[/indent]
NEW QUESTION 13
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:
Explanation: Solution:
NEW QUESTION 14
According to the following requirements, deploy your ftp login rule:
Users in example.com domain must be able to login to your ftp server as an anonymous user.
But users outside the example.com domain are unable to login to your server
Answer:
Explanation: 
NEW QUESTION 15
There were two systems:
system1, main system on which most of the configuration take place
system2, some configuration here
Configure selinux.
Configure your systems that should be running in Enforcing.
Answer:
Explanation: 
After reboot and verify with this command
NEW QUESTION 16
Please open the ip_forward and take effect permanently.
Answer:
Explanation: 
If no “sysctl.conf” option, use these commands:
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