Download Red Hat Certified Engineer (RHCE).EX300.PracticeTest.2018-01-31.40q.vcex

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Vendor: RedHat
Exam Code: EX300
Exam Name: Red Hat Certified Engineer (RHCE)
Date: Jan 31, 2018
File Size: 700 KB
Downloads: 1
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Demo Questions

Question 1
Cofigure SELINUX  
Modify the state of selinux to Enforcing mode  
Use VIM /etc/selinux
  1. See Explanation
Correct answer: A
Explanation:
vim /etc/selinux/config SELINUX=enforcing :wqreboot
vim /etc/selinux/config 
SELINUX=enforcing 
:wq
reboot
Question 2
Configure the SSH Access as required: 
Users can visit your two virtual machine systems via clients of domain group3.example.com through SSH remote
  1. See Explanation
Correct answer: A
Explanation:
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 There is a 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
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 
There is a 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
Custom User Environment 
Create a custom command on system1 and system2 named as qstat, this custome command will execute the following commands: 
/bin/ps - Ao pid,tt,user,fname,rsz 
This command is valid for all users in the system
  1. See Explanation
Correct answer: A
Explanation:
vim /etc/bashrc    // restart and keep valid  alias qstat=’/bin/ps -Ao pid,tt,user,fname,rsz’  :wqsource /etc/bashrc  alias    // check if there is a qstat qstat   // execute
vim /etc/bashrc    // restart and keep valid  
alias qstat=’/bin/ps -Ao pid,tt,user,fname,rsz’  
:wq
source /etc/bashrc  
alias    // check if there is a qstat qstat   // execute
Question 4
Configure port forwarding on the system1, as required: 
1. Systems in the network 172.24.11.0/24, local port 5423 will be ported to 80 when visiting system1  
This setting must be valid permanently
  1. See Explanation
Correct answer: A
Explanation:
Use Graphical interface to configure  Use firewall-config to open the Graphical interface in CLI Adjust the configuration: drop-down menu to permanent Adding a strategy to the port forward of the public region     systemctl restart firewalld.service  // reload the firewall strategy
Use Graphical interface to configure  
Use firewall-config to open the Graphical interface in CLI Adjust the configuration: drop-down menu to permanent Adding a strategy to the port forward of the public region
     
systemctl restart firewalld.service  // reload the firewall strategy
Question 5
Configure the Link Aggreation 
Configure a link between systeml. group3.example.com and system2. group3.example.com as required: 
  • This link use interface eth1 and eth  
  • This link still can work when one interface failed  
  • This link use the following address 172.16.3.20/255.255.255.0 in systeml  
  • This link use the following address 172.16.3.25/255.255.255.0 in in system2  
  • This link remains normal after the system is restarted
  1. See Explanation
Correct answer: A
Explanation:
If forget how to write the name, can search examples in /var/share/doc/team-1.9/example_configs/nmcli connection  add con-name team0 type team ifname team0 config  '{"runner":{"name":"activebackup"}}'nmcli con modify team0 ipv4.addresses '172.16.11.25/24' nmcli connection modify team0 ipv4.method manual nmcli connection add type team-slave con-name team0-p1 ifname eth1 master team0 nmcli connection add type team-slave con-name team0-p2 ifname eth2 master team0 nmcli connection up team0 nmcli con up team0-p1 nmcli con up team0-p2
If forget how to write the name, can search examples in /var/share/doc/team-1.9/example_configs/
nmcli connection  add con-name team0 type team ifname team0 config  
'{"runner":{"name":"activebackup"}}'
nmcli con modify team0 ipv4.addresses '172.16.11.25/24' 
nmcli connection modify team0 ipv4.method manual 
nmcli connection add type team-slave con-name team0-p1 ifname eth1 
master team0 
nmcli connection add type team-slave con-name team0-p2 ifname eth2 
master team0 
nmcli connection up team0 
nmcli con up team0-p1 
nmcli con up team0-p2
Question 6
Configure IPV6 Address  
Configure interface eth0 on your test system, using the following IPV6 addresses: 
：：：system1 address should be: 2003acl8305/64 
：：：system2 address should be: 2003acl830a/64 
：Both the two systems must can communicate with systems in network 2003acl8/64  
Addresses must be valid after the restart  
Both the two systems must keep the current IPV4 address and can communicate
  1. See Explanation
Correct answer: A
Explanation:
nmcli con mod eth0 ipv6.addresses “2003:ac18::305/64”nmcli con mod eth0 ipv6.method manual systemctl restart network nmcli con mod eth0 ipv6.addresses “2003:ac18::30a/64”nmcli con mod eth0 ipv6.method manual systemctl restart network ping6 2003:ac18::30a
nmcli con mod eth0 ipv6.addresses “2003:ac18::305/64”
nmcli con mod eth0 ipv6.method manual 
systemctl restart network 
nmcli con mod eth0 ipv6.addresses “2003:ac18::30a/64”
nmcli con mod eth0 ipv6.method manual 
systemctl restart network 
ping6 2003:ac18::30a
Question 7
Configure the local mail service 
Configure the mail service on system1 and system2, as required: 
  1. These systems do not accept external send 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 ‘authur’ to test your configuration system rhgls.domain11.example.com  
  5. Have already configured to transfer this user’s mails to the following URL rhgls.domain11.example.com/received_mail/11
  1. See Explanation
Correct answer: A
Explanation:
postconf -e local_transport=err:XX vim /etc/postfix/main.cf  relayhost=[rhgls.domain11.exmaple.com]  postconf -e  myorigin=domain11.example.com systemctl  restart postfix echo aaa | mail -S  hello dave  Open rhgls.domain11.example.com/received_mail/11 in the browser
postconf -e local_transport=err:XX vim 
/etc/postfix/main.cf  
relayhost=[rhgls.domain11.exmaple.com]  
postconf -e  
myorigin=domain11.example.com systemctl  
restart postfix echo aaa | mail -S  
hello dave  
Open rhgls.domain11.example.com/received_mail/11 in the browser
Question 8
Share directories via SMB 
Configure the SMB service on the system1  
Your SMB server must be a member of the work group STAFF  
Share /common and share 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, verfication code is redhat
  1. See Explanation
Correct answer: A
Explanation:
system1: yum -y install samba samba-client firewall-cmd --add-service=samba –permanent firewall-cmd --add-service=mountd –permanent systemctl restart firewalld vim /etc/samba/smb.conf workgroup = STAFF [common] path = /common hosts allow = 172.24.11. browseable = yes :wq mkdir /common chcon –R –t  samba_share_t  /common/ smbpasswd -a andy systemctl start smb systemctl enable samba system2:yum install –y cifs-utils samba-client
system1: 
yum -y install samba samba-client 
firewall-cmd --add-service=samba –permanent 
firewall-cmd --add-service=mountd –permanent 
systemctl restart firewalld 
vim /etc/samba/smb.conf 
workgroup = STAFF 
[common] 
path = /common 
hosts allow = 172.24.11. 
browseable = yes 
:wq 
mkdir /common 
chcon –R –t  samba_share_t  /common/ 
smbpasswd -a andy 
systemctl start smb 
systemctl enable samba 
system2:
yum install –y cifs-utils samba-client
Question 9
Configure Multi-User Mount  
Share the directory /devops through SMB on the systeml, as required: 
  1. 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 can be able to access this share through read, access code is redhat 
  5. User akira must can 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
  1. See Explanation
Correct answer: A
Explanation:
：system1 mkdir /devops chcon -R -t samba_share_t /devops/ chmod o+w /devops/ vim /etc/samba/smb.conf [devops] path = /devops hosts allow = 172.24.11. browseable = yes writable = no write list = akira :wqsystemctl restart smb smbpasswd -a silene smbpasswd -a akira system2  mkdir /mnt/dev smbclient -L /system1/ -U silene vim /etc/fstab //system1/devops /mnt/dev cifs defaults,multiuser,username=silene,password=redhat,sec=ntlmssp 0 0 df –hT
：system1 
mkdir /devops 
chcon -R -t samba_share_t /devops/ 
chmod o+w /devops/ 
vim /etc/samba/smb.conf 
[devops] 
path = /devops 
hosts allow = 172.24.11. 
browseable = yes 
writable = no 
write list = akira 
:wq
systemctl restart smb 
smbpasswd -a silene 
smbpasswd -a akira 
system2 
mkdir /mnt/dev 
smbclient -L /system1/ -U silene 
vim /etc/fstab 
//system1/devops /mnt/dev cifs 
defaults,multiuser,username=silene,password=redhat,sec=ntlmssp 0 0 
df –hT
Question 10
Mount a NFS Share  
Mount a NFS share to system1.domain11.example.com on the system2, as required: 
  1. Mount the /public to the directory /mnt/nfsmount  
  2. Mount the /protected to the directory /mnt/nfssecure, in a security way, key download URL: 
    http://host.domain11.example.com/materials/nfs_client.keytab 
  3. User deepak can creat files on /mnt/nfssecure/project  
  4. These file systemes automatically hang up when the system is started
  1. See Explanation
Correct answer: A
Explanation:
system2: showmount –e system1 mkdir -p /mnt/nfsmount vim /etc/fstab system1:/public/mnt/nfsmount nfs defaults  0 0 mount –a df –h mkdir /mnt/nfssecure wget -O /etc/krb5.keytab http://host.domain11.example.com/materials/nfs_client.keytabvim /etc/fstab system1:/protected   /mnt/nfssecure nfs defaults,sec=krb5p,v4.2  0 0:wqmount -a
system2: 
showmount –e system1 
mkdir -p /mnt/nfsmount 
vim /etc/fstab 
system1:/public
/mnt/nfsmount nfs defaults  0 0 
mount –a 
df –h 
mkdir /mnt/nfssecure 
wget -O /etc/krb5.keytab 
http://host.domain11.example.com/materials/nfs_client.keytab
vim /etc/fstab 
system1:/protected   /mnt/nfssecure nfs defaults,sec=krb5p,v4.2  0 0
:wq
mount -a
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