RHCT和RHCE必要的知识点

1.考生必须必须掌握以下基本技能，因为它们是RHCT和RHCE考试中必考的内容

* use standard command line tools (e.g., ls, cp, mv, rm, tail, cat, etc.) to create, remove, view, and investigate files and directories

* use grep, sed, and awk to process text streams and files

* use a terminal-based text editor, such as vi/vim, to modify text files

* use input/output redirection

* understand basic principles of TCP/IP networking, including IP addresses, netmasks, and gateways

* use su to switch user accounts

* use passwd to set passwords

* use tar, gzip, and bzip2v

* configure an email client on Red Hat Enterprise Linux

* use mozilla and/or links to access HTTP/HTTPS URLs

* use lftp to access FTP URLs

2.RHCT知识点

排错和系统维护

* boot systems into different run levels for troubleshooting and system maintenance

* diagnose and correct misconfigured networking

* diagnose and correct hostname resolution problems

* configure the X Window System and a desktop environment

* add new partitions, filesystems, and swap to existing systems

* use standard command-line tools to analyze problems and configure system

安装配置

* perform network OS installation

* implement a custom partitioning scheme

* configure printing

* configure the scheduling of tasks using cron and at

* attach system to a network directory service, such as NIS or LDAP

* configure autofs

* add and manage users, groups, and quotas

* configure filesystem permissions for collaboration

* install and update RPMs

* properly update the kernel RPM

* modify the system bootloader

* implement software RAID at install-time and run-time

* use /proc/sys and sysctl to modify and set kernel run-time parameters

3.RHCE知识点

排错和系统维护

RHCE除了必须具有上述RHCT技能以外，还应该具有以下技能：

* use the rescue environment provided by first installation CD

* diagnose and correct boot failures arising from bootloader, module, and filesystem errors

* diagnose and correct problems with network services (see Installation and Configuration below for a list of these services)

* add, remove, and resize logical volumes

安装配置

RHCE除了必须具有上述RHCT技能以外，还必须掌握以下网络服务的配置和使用：

* HTTP/HTTPS

* SMB

* NFS

* FTP

* Web proxy

* SMTP

* IMAP, IMAPS, and POP3

* SSH

* DNS

对于以上每一种服务，RHCE必须具备如下技能：

* install the packages needed to provide 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

RHCE必须同时掌握：

* configure hands-free installation using Kickstart

* implement logical volumes at install-time

* use PAM to implement user-level restrictions

Study Points for the RHCE Exam

Prerequisite skills for RHCT and RHCE

Candidates should possess the following skills, as they may be necessary in order to fulfill requirements of the RHCT and RHCE exams:

• use standard command line tools (e.g., ls, cp, mv, rm, tail, cat, etc.) to create, remove, view, and investigate files and directories
• use grep, sed, and awk to process text streams and files
• use a terminal-based text editor, such as vim or nano, to modify text files
• use input/output redirection
• understand basic principles of TCP/IP networking, including IP addresses, netmasks, and gateways for IPv4 and IPv6
• use su to switch user accounts
• use passwd to set passwords
• use tar, gzip, and bzip2
• configure an email client on Red Hat Enterprise Linux
• use text and/or graphical browser to access HTTP/HTTPS URLs
• use lftp to access FTP URLs

RHCT skills

Troubleshooting and System Maintenance

RHCTs should be able to:

• boot systems into different run levels for troubleshooting and system maintenance
• diagnose and correct misconfigured networking
• diagnose and correct hostname resolution problems
• configure the X Window System and a desktop environment
• add new partitions, filesystems, and swap to existing systems
• use standard command-line tools to analyze problems and configure system

Installation and Configuration

RHCTs must be able to:

• perform network OS installation
• implement a custom partitioning scheme
• configure printing
• configure the scheduling of tasks using cron and at
• attach system to a network directory service, such as NIS or LDAP
• configure autofs
• add and manage users, groups, quotas, and File Access Control Lists
• configure filesystem permissions for collaboration
• install and update packages using rpm
• properly update the kernel package
• configure the system to update/install packages from remote repositories using yum or pup
• modify the system bootloader
• implement software RAID at install-time and run-time
• use /proc/sys and sysctl to modify and set kernel run-time parameters
• use scripting to automate system maintenance tasks

RHCE skills

Troubleshooting and System Maintenance

RHCEs must demonstrate the RHCT skills listed above, and should be able to:

• use the rescue environment provided by first installation CD
• diagnose and correct boot failures arising from bootloader, module, and filesystem errors
• diagnose and correct problems with network services (see Installation and Configuration below for a list of these services)
• add, remove, and resize logical volumes
• diagnose and correct networking services problems where SELinux contexts are interfering with proper operation.

Installation and Configuration

RHCEs must demonstrate the RHCT-level skills listed above, and they must be capable of configuring the following network services:

• HTTP/HTTPS
• SMB
• NFS
• FTP
• Web proxy
• SMTP
• IMAP, IMAPS, and POP3
• SSH
• DNS (caching name server, slave name server)
• NTP

For each of these services, RHCEs must be able to:

• 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

RHCEs must also be able to:

• configure hands-free installation using Kickstart
• implement logical volumes at install-time
• use iptables to implement packet filtering and/or NAT
• use PAM to implement user-level restrictions

如何备考 RHCE 以下31个重点是RHCE考试的主要方向：　　1．了解硬盘分割的观念及RedHat Linux的安装流程

2．熟悉RedHat Linux各种安装选项的差异包含网络及自动安装

3．了解LILO，GRUB等激活管理程序及开机流程 　　

4．能够事后安装及设定其它的安装选项 　　

5．了解RedHat Linux的档案系统(FHS) 　　

6．了解/etc/sysconfig下的各种系统组态文件 　　

7．了解并实作RedHat各种安装工具，如rawrite, fips等 　　

8．自动安装RedHat Linux(kickstart installation) 　　

9．了解并实作rpm的安装，移除及查询 　　

10．熟悉*.src.rpm的基本观念

11．熟悉救援模式(rescue environment) 　　

12．使用者帐户管理 　　

13．管理使用者环境 　　

14．了解系统及使用者的bash设定档(bashrc) 　　

15．设定使用者空间配额(quota)

16．了解并使用cron系统排程 　　

17．了解系统核心(kernel)的各项观念，如monolithic，modular kernels，initial ramdisks等

18．能重编／自定系统核心(kernel) 　　

19．能在LILO或GRUB中设定新的系统核心 　　

20．了解Apache, Samba, NFS, basic sendmail, POP3/IMAP4 email, DNS, 和 ftp服务 　　

21．能设定，激活，关闭上述的服务并在失败的状况下除错 　　

22．能限制上述服务的网络存取

23．熟悉其它的服务，例如squid, innd NNTP server和 xntpd 　　

24．熟悉并设定X 　　

25．能设定各种不同的窗口管理员(window manager) 　　

26．熟悉各种包含X在内的Linux远程控制方式 　　

27．能设定xinetd服务并整合tcp wrapper 　　

28．了解nis服务 　　

29．了解并设定PAM 　　

30．了解并设定IP路由 　　

31．了解并设定IP防火墙