Microsoft 70-291 exam called called‘Implementing, Managing and Maintaining a Windows Server 2003 Network Infrastructure’ is preordained for all Microsoft Professionals IT experts. It was instigated on August 14, 2003.
Welcome to MCSA/MCSE Managing and Maintaining a Microsoft Windows Server 2003 Environment Cram! Whether this book is your first or your fifteenth Exam Cram series book, you’ll find information here that will help ensure your success as you pursue knowledge, experience, and certification. This book aims to help you get ready to take—and pass—the Microsoft certification exam “Managing and Maintaining a Microsoft Windows Server 2003 Environment” (Exam 70-290). This introduction, along with Chapter 1,explains Microsoft’s certification programs in general and talks about how the Exam Cram series can help you prepare for Microsoft’s latest MCSE and MCSA certification exams. Chapters 2 through 9 are designed to remind you of everything you’ll need to know to pass the 70-290 certification exam. The two sample tests at the end of the book should give you a reasonably accurate assessment of your knowledge—and, yes, we’ve provided the answers and their explanations for these sample tests. Read the book, understand the material, and you’ll stand
a very good chance of passing the real test.
Exam Cram books help you understand and appreciate the subjects and materials you need to know to pass Microsoft certification exams. Exam Cram books
are aimed strictly at test preparation and review. They do not teach you everything you need to know about a subject. Instead, the author streamlines and
highlights the pertinent information by presenting and dissecting the questions and problems he’s discovered that you’re likely to encounter on a Microsoft test.
Nevertheless, to completely prepare yourself for any Microsoft test, we recommend that you begin by taking the self assessment that is included in this book,
immediately following this introduction. The self-assessment tool will help you evaluate your knowledge base against the requirements for becoming a Microsoft Certified Systems Administrator (MCSA) and a Microsoft Certified Systems Engineer (MCSE) for Windows Server 2003 under both ideal and real
circumstances.
Based on what you learn from the self assessment, you might decide to begin your studies with some classroom training or some background reading. On the
other hand, you might decide to pick up and read one of the many study guides available from Microsoft or third-party vendors. We also recommend that you
supplement your study program with visits to http://www.examcram.com to receive additional practice questions, get advice, and track the Windows Server 2003 MCSA and MCSE programs.
When certificates are used for authentication, it is important that validation and revocation checking is enabled. When IAS is the RADIUS server, Windows XP is the client, and certificates are used, the following certificate validation and checking procedures are followed:
1.IAS checks client certificates
for valid dates.
to see whether it is possible to construct a certificate chain.
if configured, for required key usages and application policies present in the certificate.
to ensure they have been signed with the client’s private key. Q to check for revocation.
2.Windows XP checks the server certificate
for valid dates.
to see whether it is possible to construct a certificate chain.
for required key usages in the certificate.
to ensure the certificate has been signed with the server’s private key.
During authentication, Windows XP cannot check the revocation status of the IAS server certificate because network access is not available during EAP-TLS authentication. You can, however, enable an extra certificate check. You can explicitly select the trusted root CAs to which the server certificate can chain. This process will produce a trust decision prompt to users. While properly making a trust decision might seem inconsequential, it is sometimes a difficult issue for end users. Management of the list can be provided by using update string values on WLAN clients through Active Directory directory services wire-less network policies. This solution might not be warranted except in high security situa?tions because of the need for user training and the potential management details involved in constantly updating the list.
Key Management
Key management is the process of key change and distribution. One of the failings of 802.11 wireless networks is that there is no key management. By default in 802.11 wireless networks, encryption keys are manually recorded in access points and clients. To change the keys, a new key must be entered both at the access point and on every client—an operation that is merely tedious when there are a few clients but near impossible with any frequency when there are many clients. The lack of key manage?ment is answered in 802.Ix by dynamic key assignment. Dynamic key assignment means that encryption keys are distributed to the clients automatically; it is not necessary to manually enter keys. Keys can also be frequently changed without manual intervention.
Frequent key changes improves security because it makes it more difficult to crack the key and limits the harm done if an attacker deduces a key. Ideally, keys should be changed before any cracking tool can deduce them. Simply put, if the keys are changed often enough, an attacker will not be able to capture enough information in time to crack the encryption keys. Before he can do so, they will be changed.
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