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Article Excerpt
This column has two objectives. The first is to help you prepare for IBM Test 141 on XML and related technologies. The second is to help you learn XML by offering tips for designing and optimizing XML solutions.
The first question in your mind is probably: Why should I get XML certified? There are three simple answers to that question. First, exam preparation brings discipline and rigor to the process of learning XML and the very large collection of related specifications. Second, there is no doubt that being XML certified will make you more competitive in today's tight IT job market. For example, some government organizations make certification a prerequisite for obtaining grants and contracts for new projects. If you already have a job, certification could result in a promotion, salary increase, or better job security. Finally, the ultimate goal of learning is performance. Preparing for the exam and becoming certified will arm you with the knowledge and skills you need to architect and implement the right solution for your next XML project.
For more information on the objectives of IBM Test 141 and a sample test, visit www-1.ibm.com/certify/tests/ sam141.shtml. The format of the exam is multiple choice. This column presents five questions from the five different exam objectives. It provides the correct answer and detailed explanations for each question. The IBM XML certification is not product specific. It covers W3C specifications and other vendor-neutral specifications like SAX and UDDI. The knowledge and skills acquired during exam preparation can be used with a variety of products and in different XML project scenarios.
The exam contains approximately 57 questions. The objectives are grouped into five different categories:
* Architecture: This objective represents about 19% of the exam questions. Some questions are scenario-based. Based on various business and technical considerations you will be asked to select the appropriate technologies for an XML-based solution. The choices will include XML Schema, DTDs, XSLT, CSS, DOM, SAX, Namespaces, and others....
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