Pre requestis for Red Hat Certified Engineer — RHCE

An RHCE® certification is earned by a Red Hat® Certified System Administrator (RHCSA) who has demonstrated the knowledge, skill, and ability required of a senior system administrator responsible for Red Hat Enterprise Linux® systems. Professionals holding this certification have continually helped their companies with successful deployments and migrations.

Prerequisites

An RHCE is able to perform the following tasks (in addition to tasks associated with RHCSA):

    Configuration of static routes, packet filtering, and network address translation

    Setting kernel runtime parameters

    Building simple RPMs

    Configuring an 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, FTP, NFS, SMB, SMTP,  SSH, and NTP

Hiring IT professionals who are certified as RHCEs allows many organizations to increase their ratio of servers to administrators, enabling them to be more cost effective in building out their infrastructures without needing to bring on additional resources.

Exam objectives

RHCE exam candidates should consult the RHCSA exam objectives and be capable of RHCSA-level tasks, as some of these skills may be required in order to meet RHCE exam objectives. Red Hat reserves the right to add, modify, and remove objectives. Such changes will be made public in advance through revisions to this document.

RHCE exam candidates should be able to accomplish the following without assistance. These have been grouped into several categories.

System configuration and management

    Route IP traffic and create static routes.

    Use iptables to implement packet filtering and configure network address translation (NAT).

    Use /proc/sys and sysctl to modify and set kernel runtime parameters.

    Configure a system to authenticate using Kerberos.

    Build a simple RPM that packages a single file.

    Configure a system as an iSCSI initiator that persistently mounts an iSCSI target.

    Produce and deliver reports on system utilization (processor, memory, disk, and network).

    Use shell scripting to automate system maintenance tasks.

    Configure a system to log to a remote system.

    Configure a system to accept logging from a remote system.

Network services

Network services are an important subset of the exam objectives. RHCE candidates should be capable of meeting the following objectives for each of the network services listed below:

    Install the packages needed to provide the service.

    Configure SELinux to support the service.

    Configure the service to start when the system is booted.

    Configure the service for basic operation.

    Configure host-based and user-based security for the service.

HTTP/HTTPS

    Configure a virtual host.

    Configure private directories.

    Deploy a basic CGI application.

    Configure group-managed content.

DNS

    Configure a caching-only name server.

    Configure a caching-only name server to forward DNS queries.

    Note: Candidates are not expected to configure master or slave name servers.

FTP

    Configure anonymous-only download.

NFS

    Provide network shares to specific clients.

    Provide network shares suitable for group collaboration.

SMB

    Provide network shares to specific clients.

    Provide network shares suitable for group collaboration.

SMTP

    Configure a mail transfer agent (MTA) to accept inbound email from other systems.

    Configure an MTA to forward (relay) email through a smart host.

SSH

    Configure key-based authentication.

    Configure additional options described in documentation.

NTP

    Synchronize time using other NTP peers.

Sample Questions for RHCE exam

Five compulsory questions should be completed with in first 1 hrs of time:

1. Login as root, password is redhat (compulsory)
2. Dig server1.example.com (compulsory)
3. ping 172.24.254.254 (compulsory)
4. When you type showmount –e localhost. Export directory should be shown exported, and mount a folder /var/ftp/pub on /mnt/new in permanent from nfs server1.example.com
5. Login in graphical mode and make it default (compulsory).
6. Create a partition (ext3) of 100M and mount it on /test (compulsory).
7. Set disk quota for user Prasanna so that he can create file size up to 80k with out warning and should not create file size of 100K.
8. Resize your volume upto 300M.
9. Major troubleshooting 1 (grub or fstab)
10. Major troubleshooting 2 (grub or fstab)

RHCT

1. install the Redhat Linux which meet the following criteria
swap 1.5 or 2 of the size of the RAM
/usr 2048 MB
/var 1024 MB
/ 512MB
/home 1024MB
/tmp 1024MB
2. Configure the remaining available space for RAID 0 whose mount point is /data. Device in dev/md0. Nfs server ip address: server1.example.com directory is /var/ftp/pub
3. Install the dialog RPM present in /pub/RedHat/RPMS on server.
4. Install a new kernel which is present in /var/ftp/pub/updates on server. Kernel architecture is i686. (Kernel name is kernel-smp).
5. Create four users whose names are pnap, Prasanna, Santiago, & Jeyaseelan. The first three users are in sysaddmin group. Jeyaseelan is a login user. Password of the four users is password123. group users must get the group affiliation in /data/sysadmin directory.
6. The members of sysadmin should be able to create files. Others don’t have any permission. The files created in sysadmin directory should have group ownership as sysadmin. Group members should delete their own files in sysadmin directory.
7. schedule a job for user Prasanna by using crontab at 2:45am to display the message hello
8. Set the nis client domain name is RHCE server name is server1.example.com, user home directory is /rhom/stationx/nisuserx. Where x is your station number, username is nisuserx. Password is nisuserx and only you have to use auto mount. Only nisuserx should get his home directory as /rhome/nisuserx.
9. Configure the ipp printer client queue name is stationx. Server queue name is server1. sever ip address is server1.example.com print queue check by using http://server1.example.com:631/printers/server1
Configure the system as router.

RHCE

1. Create the secure server host which must be accessed only by example.com domain. The user prasanna can access the SSH server but root unable to access.
2. Create a file transfer protocol to allow the example.com to access and deny the cracker.org from accessing FTP server.
3. The user Prasanna can access the FTP server.
Anonymous users can access the FTP server.
4. Configure the POP3 server which can be accessed by example.com domain. Deny all domains to access pop3 server.
5. configure the send mail server
Prasanna should receive mail send to Santiago
No login user Jeyaseelan must send and receive the mail.
6. Configure the imaps server which must be accessed only by example.com domain.
7. Configure the samba server. Share the path /data by using samba which must be accessed only the user Prasanna, whose smb password is “password” samba server can be accessed only craker.org domain. The folder should be browse able. Set the netbios name as Linux.
8. Configure the nfs server.
Export /data directory.
Export directory only accessed by example.com domain.
9. Configure the http server whose default.html file present in ftp:/var/ftp/pub/stationx. Where x is your station number.
10. Configure squid which port number is 8080. you have to allow only the example.com domain to use proxy.
11. Configure the virtual host whose name is www.example.com where x is your station number. The default webpage is available from the server ftp:/var/ftp/pub/stationx/virtual.html and the document root path is /www/virtual. Only user Prasanna must access the wwwx.example.com
User Prasanna should be able to host a site (www.example.com) on it.