RH302 – RHCE (Redhat Certified Engineer)

Reference / correct answer:

1. usermod -G sysuser jackie

2. usermod –G sysuser curtin

3. Verify by reading /etc/group file

Using usermod command we can make user belongs to different group. There are two types of group one primary and another is secondary. Primary group can be only one but user can belongs to more than one group as secondary.

usermod -g groupname username  To change the primary group of the user

usermod -G groupname username  To make user belongs to secondary group.

Reference / correct answer:

1. iptables -t nat -A POSTROUTING -s 192.168.0.0/24 -p tcp -j SNAT –to-source 202.2.2.2.

POSTROUTING This filter point handles packets immediately prior leaving the system.

When Packets leave the system all’s source address change to 202.2.2.2 and can access the internet.

iptables is the build-in firewall tools, used to filter the packets and for nat. By identifying Source Address, Destination Address, type of protocol, source and destination port we can filter the packets.

-s Source Address

-d Destination Address

-p  Layer 3 Protocol

-dDestination Address

--sport Source Prot

--dportDestination Port

-i Incoming Interface

-o Outgoing Interface

-t  Table either filter or nat or mangle

-A Chain can be either INPUT, OUTPUT, FORWARD, PREROUTING, POSTROUTING.

Reference / correct answer:

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