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To alert you to an important bit of advice, a shortcut, or a pitfall, you ll occasionally see Notes, Tips, Cautions, and Exam Tips peppered throughout the text NOTE Notes offer nuggets of especially helpful stuff, background explanations, and information, and terms are defined occasionally
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TIP Tips provide suggestions and nuances to help you learn to finesse your job Take a tip from us and read the Tips carefully
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CAUTION When you see a Caution, pay special attention Cautions appear when you have to make a crucial choice or when you are about to undertake something that may have ramifications you might not immediately anticipate Read them now so you don t have regrets later
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An important part of this book comes at the end of each chapter where you will find a brief review of the high points along with a series of questions followed by the answers to those questions Each question is in multiple-choice format The answers provided also include a small discussion explaining why the correct answer actually is the correct answer The questions are provided as a study aid to you, the reader and prospective Security+ exam taker We obviously can t guarantee that if you answer all of our questions correctly you will absolutely pass the certification exam Instead, what we can guarantee is that the questions will provide you with an idea about how ready you are for the exam
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CompTIA Security+ Certification All-in-One Exam Guide also provides you with a CDROM of even more test questions and their answers to help you prepare for the certification exam Read more about the companion CD-ROM in Appendix A
Onward and Upward
At this point, we hope that you are now excited about the topic of security, even if you weren t in the first place We wish you luck in your endeavors and welcome you to the exciting field of computer and network security
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PART I
Security Concepts
1 2 3
General Security Concepts Operational Organizational Security Legal Issues, Privacy, and Ethics
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CHAPTER
General Security Concepts
Learn about the Security+ exam Learn basic terminology associated with computer and information security Discover the basic approaches to computer and information security Discover various methods of implementing access controls Determine methods used to verify the identity and authenticity of an individual
Why should you be concerned with taking the Security+ exam The goal of taking the Computing Technology Industry Association (CompTIA) Security+ exam is to prove that you ve mastered the worldwide standards for foundation-level security practitioners With a growing need for trained security professionals, the CompTIA Security+ exam gives you a perfect opportunity to validate your knowledge and understanding of the computer security field The exam is an appropriate mechanism for many different individuals, including network and system administrators, analysts, programmers, web designers, application developers, and database specialists to show proof of professional achievement in security The exam s objectives were developed with input and assistance from industry and government agencies, including such notable examples as the Federal Bureau of Investigation (FBI), the National Institute of Standards and Technology (NIST), the US Secret Service, the Information Systems Security Association (ISSA), the Information Systems Audit and Control Association (ISACA), Microsoft Corporation, RSA Security, Motorola, Novell, Sun Microsystems, VeriSign, and Entrust
The Security+ Exam
The Security+ exam is designed to cover a wide range of security topics subjects about which a security practitioner would be expected to know The test includes information from six knowledge domains:
Knowledge Domain Percent of Exam
Systems Security Network Infrastructure Access Control Assessments & Audits Cryptography Organizational Security
21% 20% 17% 15% 15% 12%
CompTIA Security+ All-in-One Exam Guide
The Systems Security knowledge domain covers the security threats to computer systems and addresses the mechanisms that systems use to address these threats A major portion of this domain concerns the factors that go into hardening the operating system as well as the hardware and peripherals The Network Infrastructure domain examines the security threats introduced when computers are connected in local networks and with the Internet It is also concerned with the various elements of a network as well as the tools and mechanisms put in place to protect networks Since a major security goal is to prevent unauthorized access to computer systems and the data they process, the third domain examines the many ways that we attempt to control who can access our systems and data Since security is a difficult goal to obtain, we must constantly examine the ever-changing environment in which our systems operate The fourth domain, Assessments & Audits, covers things individuals can do to check that security mechanisms that have been implemented are adequate and are sufficiently protecting critical data and resources Cryptography has long been part of the basic security foundation of any organization, and an entire domain is devoted to its various aspects The last domain, Organizational Security, takes a look at what an organization should be doing after all the other security mechanisms are in place This domain covers incident response and disaster recovery, in addition to topics more appropriately addressed at the organizational level The exam consists of a series of questions, each designed to have a single best answer or response The other available choices are designed to provide options that an individual might choose if he or she had an incomplete knowledge or understanding of the security topic represented by the question The exam questions are chosen from the more detailed objectives listed in the outline shown in Figure 1-1, an excerpt from the 2008 objectives document obtainable from the CompTIA web site at http://certificationcomptiaorg/resources/objectivesaspx The Security+ exam is designed for individuals who have at least two years of networking experience and who have a thorough understanding of TCP/IP with a focus on security Originally administered only in English, the exam is now offered in testing centers around the world in the English, Japanese, Korean, and German languages Consult the CompTIA web site at wwwcomptiaorg to determine a location near you The exam consists of 100 questions to be completed in 90 minutes A minimum passing score is considered 764 out of a possible 900 points Results are available immediately after you complete the exam An individual who fails to pass the exam the first time will be required to pay the exam fee again to retake the exam, but no mandatory waiting period is required before retaking it the second time If the individual again fails the exam, a minimum waiting period of 30 days is required for each subsequent retake For more information on retaking exams, consult CompTIA s retake policy, which can be found on its web site This All-in-One Security + Certification Exam Guide is designed to assist you in preparing for the Security+ exam It is organized around the same objectives as the exam and attempts to cover the major areas the exam includes Using this guide in no way guarantees that you will pass the exam, but it will greatly assist you in preparing to meet the challenges posed by the Security+ exam
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