RH302 Exam
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It is impossible to pass Red Hat RH302 exam without any help in the short term. Come to Ucertify soon and find the most advanced, correct and guaranteed Red Hat RH302 practice questions. You will get a surprising result by our Update Red Hat Certified Engineer on Redhat Enterprise Linux 5 (Labs) practice guides.
2021 Mar RH302 free draindumps
Q141. CORRECT TEXT
If root sends the mail to jane, mail should be send to /var/spool/mail/jane.
Answer and Explanation:
By default all mails to user will send to user's spool directory. Nothing to do.
Q142. CORRECT TEXT
Eric user should able to write on Document root directory.
Answer and Explanation:
Document directive is used in apache configuration file to specify the directory where all web site related documents are. According to question eric user should able to write into the Document root directory.
Better set the permission using ACL (Access Control List), to apply the permission using acl needs to mount the filesystem with acl options. Example in above answer documentroot is in /var and /var is mounting separate file system so needs to mount the /var file system with acl option.
1. vi /etc/fstab
LABEL=/var /var ext3 defaults 1 1
2. mount -o remount /var
3. setfacl -m u:eric:rwx /var/www/example
4. getfacl /var/www/example
getfacl and setfacl two commands used to maintain the permission through acl. setfacl is used to set the permission on file/directory, getfacl is used to display the permission of file/directory.
Q143. CORRECT TEXT
Create the group named sysuser.
Answer and Explanation:
1. groupadd sysuser
groupadd command is used to create the group and all group information is stored in /etc/group file.
Q144. CORRECT TEXT
You are an Administrator of example.com domain. You need to configure the DNS for www.example.com by providing the round-robin load balancing. You should load balance to 5 hosts for www having IP: 192.100.0.1, 192.100.0.2, 192.100.0.3, 192.100.0.4 and 192.100.0.5.
Where DNS is 192.100.0.X (X is your DNS Server).
Answer and Explanation:
1. Rename the file named.caching-nameserver.conf into named.conf file located into
/var/named/chroot/etc
#mv /var/named/chroot/etc/named.caching-nameserver.conf /var/named/chroot/etc/named.conf
2. Check the permission and ownership as well as SELinux Context should be like as:
-rw-r----- root named system_u:object_r:named_conf_t /var/named/chroot/etc/named.conf
If selinux context is mismatch use the restorecon -R /var command
3. vi /etc/named.conf
zone "example.com" IN {
type master;
file "example.com.zone";
};
/var/named/chroot/etc/named.conf file is used to register the zone as well as specify the global option for DNS server. There are two types of zone, i. Master, which contains the original data. ii.
Slave, backup of master. Here is the example of master zone configuration.
4. vi /var/named/chroot/var/named/example.com.zone
$TTL 345345
@ IN SOA @ webmaster.example.com.(
101; Serial Number
1H; Refresh Time
1M; Retry Time
1W; Expire Time
1D; Minimum Time to Live
)
@ IN NS 192.100.0.X
www 0 IN A 192.100.0.1
www 0 IN A 192.100.0.2
www 0 IN A 192.100.0.3
www 0 IN A 192.100.0.4
www 0 IN A 192.100.0.5
3. service named start
4. rndc reload
5. chkconfig named on
6. Check the permission as well as SELinux Context should like this:
-rw-r--r-- root named root:object_r:named_zone_t
/var/named/chroot/var/named/example.com.zone
If selinux context is mismatch use the restorecon -R /var command
7. service named start
8. rndc reload
9. chkconfig named on
Zone file should create on /var/named/chroot/var/named. Default Directory Path is specified on
/var/named/chroot/etc/named.conf file.
$TTLàTime To Live, How much seconds cache server stores the information about DNS. And Five Parameters specified Serial Number used by slave to synchronize with master server. Refresh and Retry Time used by slave server. NS is the Name (DNS) server where lookup the domain. A (Associated IP) for particular host.
Q145. CORRECT TEXT
There is a FTP server 192.168.0.254 and all required packages are dumped in /var/ftp/pub of that server and anonymous login is enabled. Install the Redhat Enterprise Linux 5 as an anonymous by creating following partitions:
/ 1000
/boot 200
/home 1000
/var 1000
/usr 4000
swap 2X256 (RAM SIZE)
Answer and Explanation:
Note: Examiner will provide you the Installation startup CD. And here mentioned size may vary see on the exam paper.
1. Insert the CD on CD-ROM and start the system.
2. In Boot: Prompt type linux askmethod
3. It will display the Language, keyboard selection.
4. It will ask you for the installation method.
5. Select the FTP from the list
6. It will ask the IP Address, Net mask, Gateway and Name Server. Select Use
Dynamic IP Configuration: because DHCP Server will be configured in your exam lab.
7. It will ask for the FTP site name and Redhat Enterprise Linux Directory.
Specify the FTP Server: 192.168.0.254
Directory: pub à Because anonymous login on /var/ftp.
8. After Connecting to the FTP Server Installation will start. Go up to the partition screen by selecting the different Options.
9. Create the partition According to the Question because Size and what-what partition should you create at installation time is specified in your question
10. Then select the MBR Options, time zone and go upto package selections.
It is another Most Important Time of installation. Due to the time limit, you should be care about the installation packages. At Exam time you these packages are enough.
X-Window System
GNOME Desktop
(these two packages are generally not required)
Administration Tools.
System Tools
Windows File Server
FTP Servers
Mail Servers
Web Servers
Network Servers
Editors
Text Based Internet
Server Configuration Tools
Printing Supports
When installation will complete, your system will reboot. Jump for another Question.
Avant-garde RH302 test question:
Q146. CORRECT TEXT
You are working as a System Administrator at Certkiller. Your Linux Server crashed and you lost every data. But you had taken the full backup of user's home directory and other System Files on /dev/st0, how will you restore from that device?
Answer and Explanation:
1. Go to on that directory where you want to restore.
2. restore -rf /dev/st0
To restore from backup we use the restore command. Here backup will restore from /dev/st0 on current Directory.
Q147. CORRECT TEXT
You are the Network Engineer of example.com domain. Configure to allow users user1, user2 and user3 to login only between 9am to 17pm on very day.
Answer and Explanation:
1. vi /etc/security/time.conf
login;*;user1|user2|user3;Al0900-1700
2. vi /etc/pam.d/login
account required pam_time.so
For Time based authentication, we should configured in /etc/security/time.conf
Syntax of /etc/security/time.conf
services;ttys;users;times
services
is a logic list of PAM service names that the rule applies to.
ttys
is a logic list of terminal names that this rule applies to.
users
is a logic list of users to whom this rule applies.
times
the format here is a logic list of day/time-range entries the days are specified by a sequence of two character entries, MoTuSa for example is Monday Tuesday and Saturday. Note that repeated days are unset MoMo = no day, and MoWk = all weekdays bar Monday. The two character combinations accepted are
Mo Tu We Th Fr Sa Su Wk Wd Al
the last two being week-end days and all 7 days of the week respectively. As a final example, AlFr means all days except Friday.
pam_time modules checks the file /etc/security/time.conf for authentication. So, we should call the pam_time modules in /etc/pam.d/login.
Q148. CORRECT TEXT
You are giving RHCE exam. Examiner gave you the Boot related problem and told to you that make successfully boot the System. While booting system, you saw some error and stop the boot process by displaying some error messages.
Kernel Panic - not syncing: Attempted to kill init!
And no further boot process. What you will do to boot the system.
Answer and Explanation:
To understand the role of a boot loader, take a step back from Linux. When you boot your computer, the BIOS starts by detecting basic hardware, including your hard drives. Once it's done, it looks for the boot loader on the Master Boot Record of the first available disk. If you're working with an older PC, the BIOS can't find your boot loader unless it's located within the first 1,024 cylinders of the hard disk.
Newer BIOSes overcome this problem with Logical Block Addressing, which is also known as LBA mode. LBA mode reads 'logical' values for the cylinder, head, and sector, which allows the BIOS to 'see' a larger disk drive.
If you have multiple hard drives, there is one more caveat. If your drives are IDE hard drives, the /boot directory must be on a hard drive attached to the primary IDE controller. If your drives are all SCSI hard drives, the /boot directory must be located on a hard drive with SCSI ID 0 or ID 1. If you have a mix of hard drives, the /boot directory must be located on either the first IDE drive or a SCSI drive with ID 0. In other words, this is not an issue on the Red Hat exams unless the computer that you're tested on has more than two hard drives. And I believe that's less likely, as that would increase the cost of the exam.
If you are getting the Kernel panic error, it means it is boot loader related problem. Redhat Enterprise Linux uses the GRUB boot loader. You can pass the kernel parameter from the boot loader as well as you can correct the kernel parameter passing from boot loader from GRUB screen at boot time.
GRUB boot loader configuration file is: /etc/grub.conf
And Correct Configuration is:
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title Red Hat Enterprise Linux ES (2.6.9-5.EL)
root (hd0,0)
kernel /vmlinuz-2.6.9-5.EL ro root=LABEL=/ rhgb quiet
initrd /initrd-2.6.9-5.EL.img
Probably miss-configured the boot loader, so giving this problem. You can pass the correct parameter from GRUB prompt:
If you know all parameters and sequence of the boot loader you can enter in command prompt also.
Press c on GRUB screen.
Grub> root (hd0,0)
grub> kernel /vmlinuz-2.6.9-5.EL ro root=LABEL=/ rhgb quiet
grub> initrd /initrd-2.6.9-5.EL.img
grub>boot
Q149. CORRECT TEXT
Create the group named training
Answer and Explanation:
1. groupadd training
To create a group we use the groupadd command.
Verify from: cat /etc/group whether group added or not?
Q150. CORRECT TEXT
Change the Group Owner of /data to training group.
Answer and Explanation:
chown or chgrp command is used to change the ownership.
Syntax of chown: chown [-R] username:groupname file/directory
Syntax of chgrp: chgrp [-R] groupname file/directory
Whenever user creates the file or directory, the owner of that file/directory automatically will be that user and that user's primary group name.
To change group owner ship
1. chgrp training /data à Which set the Group Ownership to training
or
chown root.training /data àWhich set the user owner to root and group owner to training group.
Verify /data using: ls -ld /data
You will get: drwxr-xr-x 2 root training ..............