Red Hat RH302 ExamRed Hat Certified Engineer on Redhat Enterprise Linux 5 (Labs)

Total Question: 330 Last Updated: November 01,2017
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Jun 2017 updated: Ucertify Red Hat RH302 practice 21-30

we provide Practical Red Hat RH302 exam engine which are the best for clearing RH302 test, and to get certified by Red Hat Red Hat Certified Engineer on Redhat Enterprise Linux 5 (Labs). The RH302 Questions & Answers covers all the knowledge points of the real RH302 exam. Crack your Red Hat RH302 Exam with latest dumps, guaranteed!

Q21. CORRECT TEXT

You are giving the RHCE exam. Now you should boot your System properly. When you started your System, You got one message that.

INIT Entering runlevel 9

INIT: no more processes left in this runlevel

How will you boot your System properly?

Answer and Explanation:

You should know about the /etc/inittab file, where default runlevel will define. And Much more runlevel specific Scripts are called here.

Actually that problem will occur if you don't specify the default runlevel.

4. Reboot the system

5. Boot the System on single user mode.

Except for a normal boot of Linux, single-user mode is the most commonly used option. This is the system maintenance mode for experienced Linux administrators. It allows you to perform clean backups and restores to any partitions as needed from local hardware. It also allows you to run administration commands, recover or repair password and shadow password files, run filesystem checks, and so forth.

6. vi /etc/inittab and Write

id:runlevel:initdefault:

Standard Runlevels in RedHat Enterprise Linux


Q22. CORRECT TEXT

ssh service is enabled in your Server. Your LAN is connected to WAN also. Configure to match following conditions.

i. Deny the ssh from outside the example.com domain members.

ii. If any denied hosts tried for ssh then send the information through mail with client;s information.

Answer and Explanation:

1. vi /etc/hosts.deny

sshd:ALL EXCEPT .example.com: spawn echo "Loging attempt from %c to %s" | mail -s "Login from denied hosts" root

We can secure the services using tcp_wrappers. There are main two files, /etc/hosts.allow and /etc/hosts.deny.

There will be three stage access checking

-Is access explicitly permitted? Means permitted from /etc/hosts.allow?

- Otherwise, Is access explicitly denied? Means denied from /etc/hosts.deny?

- Otherwise, by default permit access if neither condition matched.

To deny the services we can configure /etc/hosts.deny file using ALL and EXCEPT operation.

Pattern of /etc/hosts.allow and /etc/hosts.deny file is:

Demon_list:client_list:options

In Client list can be either domain name or IP address.


Q23. CORRECT TEXT

Raw printer named printerx where x is your station number is installed and shared on server1.example.com. Install the shared printer on your PC to connect shared printer using IPP Protocols. Your server is 192.168.0.254.

Answer and Explanation:

1. Open the Browser either firefox or links

2. Type : http://localhost:631

3. Click on Manage Printer

4. Click on Add Printer

5. Type Queue name like stationx and click on continue

6. Type Device type or printing Protocol: i.e Internet printing Protocol

7. Click on Continue

8. Type Device URL: ipp://server1.example.com/printers/printerx

9. Click on Continue

10. Select RAW Model printer

11. Click on Continue

12. Test by sending the printing job


Q24. CORRECT TEXT

Create the user named jackie, curtin, david

Answer and Explanation:

1. useradd jackie

2. useradd curtin

3. useradd david

useradd command is used to create the user. All user's information stores in /etc/passwd and user;s shadow password stores in /etc/shadow.


Q25. CORRECT TEXT

Configure to allow the pop3 and imap connection from your domain example.com

and my133t.org domain.

Answer and Explanation:

1. vi /etc/hosts.deny

dovecot:ALL EXCEPT .example.com, .my133t.org

We can secure the services using tcp_wrappers. There are main two files, /etc/hosts.allow and /etc/hosts.deny.

There will be three stage access checking

- Is access explicitly permitted? Means permitted from /etc/hosts.allow?

- Otherwise, Is access explicitly denied? Means denied from /etc/hosts.deny?

- Otherwise, by default permit access if neither condition matched.

To deny the services we can configure /etc/hosts.deny file using ALL and EXCEPT operation.

Pattern of /etc/hosts.allow and /etc/hosts.deny file is:

Demon_list:client_list:options

In Client list can be either domain name or IP address.


Q26. CORRECT TEXT

One New Kernel is released named kernel-.2.6.19-11. Kernel is available on ftp://server1.example.com/pub/updates directory for anonymous. Install the Kernel and make the kernel-2.6.18-8 default.

Answer and Explanation:

1. rpm -ivh ftp://server1.example.com/pub/updates/kernel-2.6.19-11.i686.rpm

2. vi /etc/grub.conf

default=1 à Change this value to 1

timeout=5

splashimage=(hd0,0)/grub/splash.xpm.gz

hiddenmenu

title Red Hat Enterprise Linux ES (2.6.19-11)

root (hd0,0)

kernel /vmlinuz-2.6.19-11.EL ro root=LABEL=/ rhgb quiet

initrd /initrd-2.6.19-11.EL.img

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

According question that kernel is available to anonymous user. You can directly install from the ftp server using rpm command.

When you install the kernel, it will write on /etc/grub.conf file. You can set the default kernel by changing the default value. See on the output of /etc/grub.conf file that new kernel is on first title so it's index is 0 and previous kernel's index is 1.


Q27. CORRECT TEXT

Port 8080

Configure the squid server to allow the Local Domain and deny to my133t.org domain.

Answer and Explanation:

At exam Lab example.com domain resides on 172.24.0.0/16 Network and my133t.org resides on 172.25.0.0/16 Network.

1. vi /etc/squid/squid.conf

#detault:

http_port 8080

#Recommended minimum configuration:

# Near the src acl src section

acl allownet src 172.24.0.0/255.255.0.0

acl denynet src 172.25.0.0/255.255.0.0

#Default:

# http_access deny all

#Under Here

http_access allow allownet

http_access deny denynet

2. service squid start

3. chkconfig squid on

squid is a proxy caching server, using squid we can share the internet, block the internet, to certain network. First we should define the port for squid, the standard port for squid is 3128. We can run squid on different port by specifying http_port portnumber.


Q28. CORRECT TEXT

One Logical Volume is created named as myvol under vo volume group and is mounted. The Initial Size of that Logical Volume is 124MB. Make successfully that the size of Logical Volume 245MB without losing any data. The size of logical volume 240MB to 255MB will be acceptable.

Answer and Explanation:

1. First check the size of Logical Volume: lvdisplay /dev/vo/myvol

2. Increase the Size of Logical Volume: lvextend -L+121M /dev/vo/myvol

3. Make Available the size on online: resize2fs /dev/vo/myvol

4. Verify the Size of Logical Volume: lvdisplay /dev/vo/myvol

5. Verify that the size comes in online or not: df -h

We can extend the size of logical Volume using the lvextend command. As well as to decrease the size of Logical Volume, use the lvresize command. In LVM v2 we can extend the size of Logical Volume without unmount as well as we can bring the actual size of Logical Volume on online using ext2online command.


Q29. CORRECT TEXT

User jeff should able to access the mail using IMAP over SSL

Answer and Explanation:

IMAP is a very usefully protocol, but it lacks encryption. The dovecot package distributed with RHEL includes the ability to use IMAP over SSL, This requires the creation of a PEM format certificate.cd /etc/pki/tls/ and remove the cert.pem.Go the /etc/pki/tls/certs then use:make dovecot.pem : Which generates the dovecot.pem certificate by reading MakeFileEnable the imaps with Certificate and Key file protocol from /etc/dovecot.conf

vi /etc/dovecot.conf

protocols = imap imaps

ssl_cert_file = /etc/pki/dovecot/certs/dovecot.pem

ssl_key_file = /etc/pki/dovecot/private/dovecot.pemservice dovecot restart : Restart the Dovecot

service


Q30. CORRECT TEXT

One Logical Volume named lv1 is created under vg0. The Initial Size of that Logical Volume is 100MB. Now you required the size 500MB. Make successfully the size of that Logical Volume 500M without losing any data. As well as size should be increased online.

Answer and Explanation:

The LVM system organizes hard disks into Logical Volume (LV) groups. Essentially, physical hard disk partitions (or possibly RAID arrays) are set up in a bunch of equal-sized chunks known as Physical Extents (PE). As there are several other concepts associated with the LVM system, let's start with some basic definitions:

* Physical Volume (PV) is the standard partition that you add to the LVM mix. Normally, a physical volume is a standard primary or logical partition. It can also be a RAID array.

* Physical Extent (PE) is a chunk of disk space. Every PV is divided into a number of equal sized PEs. Every PE in a LV group is the same size. Different LV groups can have different sized PEs.

* Logical Extent (LE) is also a chunk of disk space. Every LE is mapped to a specific PE.

* Logical Volume (LV) is composed of a group of LEs. You can mount a filesystem such as /home and /var on an LV.

* Volume Group (VG) is composed of a group of LVs. It is the organizational group for LVM. Most of the commands that you'll use apply to a specific VG.

1. Verify the size of Logical Volume: lvdisplay /dev/vg0/lv1

2. Verify the Size on mounted directory: df -h or df -h mounted directory name

3. Use : lvextend -L+400M /dev/vg0/lv1

4. resize2fs /dev/vg0/lv1 à to bring extended size online.

5. Again Verify using lvdisplay and df -h command.


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