RH302 Redhat Certified Engineer on Redhat Enterprise Linux 5 (Labs)

Prove your skills and knowledge

An RHCE is capable of RHCSA tasks plus the following:
Configuring static routes, packet filtering, and network address translation
Setting kernel runtime parameters
Configuring an Internet Small Computer System Interface (iSCSI) initiator
Producing and delivering reports on system utilization
Using shell scripting to automate system maintenance tasks
Configuring system logging, including remote logging
Configuring a system to provide networking services, including HTTP/HTTPS, File Transfer Protocol (FTP), network file system (NFS), server message block (SMB), Simple Mail Transfer Protocol (SMTP), secure shell (SSH) and Network Time Protocol (NTP)

Is this certification right for you?

The following audiences may be interested in earning RHCE:
RHCSAs who wish to earn a more senior-level credential.
Experienced senior system administrators who have not yet certified.
Course participants in Red Hat Training who have completed System Administration I, II, and III, or who have completed the RHCE Rapid Track Course.
Experienced system administrators who require certification for their job or by mandate (e.g., US Department of Defense Directive 8570).

Test your skills and knowledge
Note: There is no requirement that these exams be taken and passed on the same release of Red Hat Enterprise Linux.

EX200 – Red Hat Certified System Administrator (RHCSA) exam
EX300 – Red Hat Certified Engineer (RHCE) exam

Windows system administrators with minimal Linux experience:
Red Hat System Administration I (RH124)
Red Hat System Administration II (RH134)
Red Hat System Administration III (RH254)

Linux or UNIX administrators with 1-3 years of experience:
RHCSA Rapid Track Course (RH199)
Red Hat System Administration III (RH254)

RHCEs who wish to re-certify:

RHCE Certification Lab

61.1. Course Description
RHCE stands apart from many other certification programs in the IT sector because of its emphasis on hands-on, performance-based testing of actual skills in Red Hat Linux installation, configuration, debugging, and setup of key networking services.
61.1.1. Prerequisites
See RH300 course prerequisites. For further information, please refer to the RHCE Exam Prep Guide: www.redhat.com/training/rhce/examprep.html
61.1.2. Content

Section I: Troubleshooting and System Maintenance (2.5 hrs)
Section II: Installation and Configuration (3 hrs.)

QUESTION 2
CORRECT TEXT
Dig Server1.example.com, Resolve to successfully through DNS Where DNS server is
172.24.254.254

Answer and Explanation
#vi etcresolv.conf
nameserver 172.24.254.254
# dig server1.example.com
#host server1.example.com
DNS is the Domain Name System, which maintains a database that can help your computer
translate domain names such as www.redhat.com to IP addresses such as 216.148.218.197. As
no individual DNS server is large enough to keep a database for the entire Internet, they can refer
requests to other DNS servers.
DNS is based on the named daemon, which is built on the BIND (Berkeley Internet Name Domain)
package developed through the Internet Software Consortium
Users wants to access by name so DNS will interpret the name into ip address. You need to
specify the Address if DNS server in each and every client machine. In Redhat Enterprise Linux,
you need to specify the DNS server into etcresolv.conf file.
After Specifying the DNS server address, you can verify using host, dig and nslookup commands.

QUESTION 3
CORRECT TEXT
Create the partition having 100MB size and mount it on mntneo

Answer and Explanation
1. Use fdisk devhda à To create new partition.
2. Type n à For New partitions
3. It will ask for Logical or Primary Partitions. Press l for logical.
4. It will ask for the Starting Cylinder Use the Default by pressing Enter Key.
5. Type the Size +100M à You can Specify either Last cylinder of Size here.
6. Press P to verify the partitions lists and remember the partitions name.
7. Press w to write on partitions table.
8. Either Reboot or use partprobe command.
9. Use mkfs -t ext3 devhda Where is your partition number
10. Or
11. mke2fs -j devhda à To create ext3 filesystem.
12. mkdir mntneo
13. vi etcfstab
14. Write
15. devhda mntneo ext3 defaults 1 2
16. Verify by mounting on current Sessions also
17. mount devhda mntneo

QUESTION 4
CORRECT TEXT
Your System is going use as a router for 172.24.0.016 and 172.25.0.016. Enable the IP
Forwarding.

Answer and Explanation
1. echo 1 procsysnetipv4ip_forward
2. vi etcsysctl.conf
net.ipv4.ip_forward=1
proc is the virtual filesystem, containing the information about the running kernel. To change the
parameter of running kernel you should modify on proc. From Next reboot the system, kernel will
take the value from etcsysctl.conf.

QUESTION 5
CORRECT TEXT
Some users home directory is shared from your system. Using showmount -e localhost command,
the shared directory is not shown. Make access the shared users home directory.

Answer and Explanation
1. Verify the File whether Shared or not cat etcexports
2. Start the nfs service service nfs start
3. Start the portmap service service portmap start
4. Make automatically start the nfs service on next reboot chkconfig nfs on
5. Make automatically start the portmap service on next reboot chkconfig portmap on
6. Verify either sharing or not showmount -e localhost
7. Check that default firewall is running on system if running flush the iptables using iptables -F
and stop the iptables service.

QUESTION 6
CORRECT TEXT
neo user tried by
dd if=devzero of=homeneosomefile bs=1024 count=70
files created successfully. Again neo tried to create file having 70K using following command
dd if=devzero of=homeneosomefile bs=1024 count=70
But he is unable to create the file. Make the user can create the file less then 70K.

Answer and Explanation
Very Tricky question from redhat. Actually question is giving scenario to you to implement quota to
neo user. You should apply the quota to neo user on home that neo user shouldn’t occupied
space more than 70K.
1. vi etcfstab
LABEL=home home ext3 defaults,usrquota 0 0 à To enable the quota on filesystem you should
mount the filesystem with usrquota for user quota and grpquota for group quota.
2. touch homeaquota.user àCreating blank quota database file.
3. mount -o remount home à Remounting the home with updated mount options. You can verify
that home is mounted with usrquota options or not using mount command.
4. quotacheck -u home à Initialization the quota on home
5. edquota -u neo home à Quota Policy editor
See the snapshot
Disk quotas for user neo (uid 500)
Filesystem blocks soft hard inodes soft hard
devmappervo-myvol 2 30 70 1 0 0
Can you set the hard limit 70 and soft limit as you think like 30.
Verify using the repquota home command.