Sair Linux and GNU Certification Level II, Apache and Web Servers

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Managing and troubleshooting Web servers is an integral part of every IT professional's job. Apache is an open source Web server that has captured 63% of the more than 18 million Web servers currently in place. This guide provides the in-depth information, skills, and techniques needed to effectively maintain an Apache Web server.

With Linux growing rapidly in popularity as an enterprise solution, companies now more than ever are looking for IT professionals who are Linux ...

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Overview

Managing and troubleshooting Web servers is an integral part of every IT professional's job. Apache is an open source Web server that has captured 63% of the more than 18 million Web servers currently in place. This guide provides the in-depth information, skills, and techniques needed to effectively maintain an Apache Web server.

With Linux growing rapidly in popularity as an enterprise solution, companies now more than ever are looking for IT professionals who are Linux certified. Designed and developed by the industry-leading members of Sair, Inc. and its advisory board, the Sair Linux and GNU Certification program provides IT professionals with a clear path for improving their Linux skills and knowledge base, while giving employers the means for ensuring the competency level of their staff. The LCE books in this series of study guides help readers master the areas of expertise necessary to pass the certification exam for becoming a Linux Certified Engineer (LCE). Readers will also get prep help through lab exercises and sample questions from the LCE exam.

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Editorial Reviews

From The Critics
The majority of Internet Web servers are Apache-based. This Apache study guide is for one of the elective subjects for the Sair Linux and GNU Certified Engineer certificate, exam 3X0-202. Part I covers the knowledge matrix from installation and configuration to security and troubleshooting, with highlighted objectives and tips. Next, labs and exercises address both theory and practice. The last section includes 100 practice questions with an answer key, and a glossary. Annotation c. Book News, Inc., Portland, OR (booknews.com)
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Product Details

  • ISBN-13: 9780471405375
  • Publisher: Wiley
  • Publication date: 9/1/2001
  • Series: Sair Linux Series, #3
  • Edition number: 1
  • Pages: 320
  • Product dimensions: 7.62 (w) x 9.24 (h) x 0.74 (d)

Meet the Author

SAIR'S KEY COURSEWARE CONTRIBUTORS: Tobin Maginnis, President and CEO; Ross Brunson, Director of Courseware Development and Instructor Operations; Trisha Kemerly, Managing Editor; Carlos Pruitt, Development Manager; and Paul Tate, Special Projects Manager. The Sair Development Team-comprising computer scientists, engineers, and Linux experts-uses its combined 100 years of experience to bring the IT world the best in vendor-neutral certi?cation
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Introduction

Welcome to the Level II study guide series for the Sair Linux and GNU Certified Engineer. This is the Apache study guide for Sair Linux and GNU Certification, Exam 3X0-202. The Apache study guide is one of the optional or elective subjects for the Sair Linux and GNU Certified Engineer (LCE) certificate.

Requirements for the Sair Linux and GNU Certified Engineer (LCE) include passing the Core Concepts and Practices exam, 3X0-201, plus three additional exams from other elective subjects. In addition to this study guide, other possible elective areas include Sendmail and mail system components, Samba and resource-sharing components, and PHP and scripting. See www.linuxcertification.com for a complete listing of available courses. Each course consists of a minimum of 32 classroom contact hours, making the LCE equivalent to an additional 128 hours of classroom contact beyond the LCA. We see achievement of the LCE to be evidence of the ability to perform as an advanced Linux systems specialist, as a system administrator supervisor, or in some other form of Linux system management.

Exams are offered at Prometric and VUE testing centers. Prometric offers the Sair exams at any one of its 3,500 testing centers in 141 countries. To take a test, simply call the Prometric registration line at 1-888-895-6717. Ask the customer service representatives about the 3X0 series of exams, and they will answer any test-taking questions related to the test, describe available local testing centers, and, if requested, schedule an exam. It is also possible to register for tests online at www.prometric.com. VUE also offers the Sair exams at any oneof its 2,500 testing centers in 110 countries. To take a test, call the VUE registration line at 1-952-995-8800. Ask the customer service representatives about the 3X0 series of exams, and they will answer any test-taking questions related to the test, describe available local testing centers, and, if requested, schedule an exam. It is also possible to register for tests online at www.vue.com/sairlinux.

Preparing for test content is paramount in criteria-based certification tests, and Sair takes pride in the coordination of test topics from the Knowledge Matrix, objectives, competencies, study guides, and exams. These topics specify exact criteria that the candidate must meet. The tests directly measure these topics, and results are reported with a detailed summary for each of these six areas< theory of operation, base system, shells and commands, system utilities, applications, and troubleshooting.

Each exam consists of 50 questions that can be answered, reviewed, and changed for up to 60 minutes. Typical test takers use about 45 minutes to complete the exam. Successful completion of each test requires 74 percent correct, or 37 correct answers. Unlike tests that assign a rank to a test taker relative to all other test takers, Sair emphasizes mastery of material. Results of the test directly inform the candidate of the mastery level in each area, allowing each student to focus future studies on areas of relative weakness. Prospective employers can also use the detailed summary to evaluate job applicants' or employees' areas of strength. Sair is unique in this regard. Some other certification examinations supply the test taker with only a relative score of some type, without a raw score, percentage correct, or other measure for evaluating his or her performance. The effect of this practice is to leave the test taker who fails without guidance as to how to prepare for reexamination.

Minimum Candidate Requirements

The Sair Linux and GNU tests were not designed for the novice computer user. It is assumed that the candidate has approximately two years of computer experience and has experience in the configuration of one or more operating systems. For example, the candidate should be familiar with basic hardware concepts, such as CPU, cache, memory, interface adapters, hard disks, and networks. The candidate should also be familiar with basic operating system concepts, such as booting, file access, and device drivers. Finally, the candidate should know basic commands and the use of a Unix-type editor, such as Joe, Pico, Vi, or Emacs.

Knowledge Matrix

The test is based on the Apache Knowledge Matrix shown at www.linux-certification.com. Examination topics are listed here. Note that while the major topics listed in the Knowledge Matrix will not change, some subtopics may be added as needed to update the material. Please check the Sair Web site for any additions to this list.

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Table of Contents

Acknowledgments.

Introduction.

Part One: Knowledge Matrix.

Chapter 1. Installation and Configuration.

Objectives.

Theory of Operations.

History of Apache.

Apache Today.

How Does Apache Work?

How to Obtain Apache.

Overview of Content Negotiation.

Base Systems.

Preparing Linux.

Introduction to Packages.

Installation.

System Utilities.

The httpd Daemon.

Setting Up Apache.

Chapter 2. System Administration.

Objectives.

Theory of Operation.

Being a Webmaster.

Preparing Apache.

Introduction to Virtual Hosting.

Introduction to Apache Modules.

Introduction to the Apache API.

Introduction to Logging.

Base Systems.

Multiple Daemons.

Configuration.

Number of httpd Processes.

Alias.

CGI Scripts.

How to Configure CGI.

Apache Initialization.

Log Files.

Log File Formats.

Shells and Commands.

Benchmarking.

System Utilities.

Creating CGI Scripts.

Performance Monitoring.

Some Good Log Analysis Tools.

Chapter 3. Networking.

Objectives.

Theory of Operation.

What Is TCP/IP and How Does Apache Use It?

What Is HTTP?

Multiple Hosts.

Base Systems.

Virtual Hosting.

Directing the Request to a Virtual Host.

Single Daemon/Virtual Hosting.

IP-Based Virtual Hosting.

Name-Based Virtual Hosting.

Shells and Commands.

URL Rewriting mod_rewrite.

Chapter 4. Security.

Objectives.

Theory of Operation.

Security Concerns.

Security Policies.

Authentication.

Securing Apache.

Vulnerabilities.

Hostile Programs.

Security Issues with CGI.

The Apache Proxy Server.

Firewalls.

Password Protection.

Base Systems.

Apache, Users, and Groups.

Permissions.

Access Control.

Setting Up the Apache Proxy.

Security Fundamentals.

User Access Control.

Enabling Content from Home Directories.

Access Directives.

Defining within httpd.conf.

Shells and Commands.

Checksums.

Password Authentication.

System Utilities.

Server-Side Includes.

XSSI.

ModSSL versus Apache+SSL.

Chapter 5. Troubleshooting.

Objectives.

Online Troubleshooting Resources.

Tracking Down an Apache Core Dump.

Some Useful Sites.

Configuration Issues.

Logging Problems.

Part Two: Labs and Exercises.

Lab I: Installation.

Purpose.

Theory.

Lab Exercises.

Downloading Modules.

Preinstallation Query.

Package Installation.

Basic Server Setup.

Questions.

Answers.

Advanced Questions.

Lab II: Install Apache+SSL.

Purpose.

Theory.

Lab Exercises.

Downloading the Apache server.

Compile Apache with mod_ssl Support.

Verify That Apache Was Compiled with mod_ssl.

Test the Sample Page in a Web Browser.

Questions.

Answers.

Advanced Questions.

Lab III: Configuring Apache to Perform Common Tasks.

Purpose.

Theory.

Lab Exercises.

Questions.

Answers.

Advanced Questions.

Lab IV: Create a Simple CGI Script.

Purpose.

Theory.

Lab Exercises.

Create a Basic CGI Script.

Questions.

Answers.

Advanced Questions.

Lab V: Configure and Run mod_auth_mysql.

Purpose.

Theory.

Setting Up the MySQL Database.

Setting Up Apache.

Lab Exercises.

Student Resources.

Questions.

Answers.

Advanced Questions.

Lab VI: Apache and Tomcat.

Purpose.

Theory.

Lab Exercises.

Questions.

Answers.

Advanced Questions.

Lab VII: Configuration of a Proxy.

Purpose.

Theory.

Installing mod_proxy.

Configuring httpd.

Configuring the Client.

Lab Exercises.

Installing mod_proxy.

Configuring httpd.

Configuring the Client.

Questions.

Answers.

Advanced Questions.

Lab VIII: URL Rewriting.

Purpose.

Theory.

Lab Exercises.

Questions.

Answers.

Advanced Questions.

Lab IX: Create a Custom Log for Apache.

Purpose.

Theory.

Lab Exercises.

Questions.

Answers.

Advanced Questions.

Lab X Benchmark Your Server.

Purpose.

Theory.

Lab Exercises.

Questions.

Answers.

Advanced Questions.

Part Three: Practice Questions and Answers.

Practice Questions.

Answers.

Glossary.

Index.

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