Libros de Informática práctica, página 30 de 348

La seguridad informática es un requisito indispensable para todas las empresas. Proteger los sistemas de información, desde el más potente de los servidores, hasta el más pequeño portátil, es esencial para los expertos. Un profundo estudio de los sistemas, las redes, los programas, y hasta el propio hardware es indispensable para prevenir amenazas futuras y eliminar las ya existentes. Esta guía de estudio es un referente a la hora de hacer frente al mundo inseguro que nos rodea. Aporta los conocimientos y habilidades necesarios para disponer de una formación profunda en materia de seguridad. Es ante todo, un recurso para solucionar los retos profesionales. La certificación SY0—301 en materia de seguridad tiene un indudable prestigio profesional. Gracias a este libro, aprenderá todo lo necesario para poder aprobar el examen CompTIA, que le otorgará un valor añadido en el mundo laboral. Las competencias profesionales de estos textos en materia de seguridad son importantes incluso si sólo quiere aprender o ponerse al día. El CD-ROM incluido dispone de exámenes y ejemplos completos, así como provechosas herramientas y utilidades provenientes del libro original en inglés.

Adiabatic quantum computation (AQC) is an alternative to the better-known gate model of quantum computation. The two models are polynomially equivalent, but otherwise quite dissimilar: one property that distinguishes AQC from the gate model is its analog nature. Quantum annealing (QA) describes a type of heuristic search algorithm that can be implemented to run in the "native instruction set" of an AQC platform. D-Wave Systems Inc. manufactures {quantum annealing processor chips} that exploit quantum properties to realize QA computations in hardware. The chips form the centerpiece of a novel computing platform designed to solve NP-hard optimization problems. Starting with a 16-qubit prototype announced in 2007, the company has launched and sold increasingly larger models: the 128-qubit D-Wave One system was announced in 2010 and the 512-qubit D-Wave Two system arrived on the scene in 2013. A 1,000-qubit model is expected to be available in 2014. This monograph presents an introductory overview of this unusual and rapidly developing approach to computation.We start with a survey of basic principles of quantum computation and what is known about the AQC model and the QA algorithm paradigm. Next we review the D-Wave technology stack and discuss some challenges to building and using quantum computing systems at a commercial scale. The last chapter reviews some experimental efforts to understand the properties and capabilities of these unusual platforms. The discussion throughout is aimed at an audience of computer scientists with little background in quantum computation or in physics.s

Exploring, Transforming, Validating, and Integrating Your Data About This Book * Manipulate your data by exploring, transforming, validating, and integrating it using Pentaho Data Integration 7 * Take advantage of amazing innovations in Big Data by using Apache Spark with Pentaho Data Integration 7 * A comprehensive guide exploring the features of Pentaho Data Integration 7 Who This Book Is For This book is a must-have for software developers, business intelligence analyst, IT students, and everyone involved or interested in developing ETL solutions, or more generally, doing any kind of data manipulation. Those who have never used PDI will benefit the most from the book, but those who have, will also find it useful. This book is also a good starting point for data warehouse designers, architects, or anyone who is responsible for data warehouse projects and needs to load data into them. What you will learn * Install and get started with Pentaho Data Integration * Learn the ins and outs of Spoon, the graphical designer tool * Transform data in several ways such as performing simple and complex calculations, cleaning, counting, de-duplicating, filtering, and ordering * Learn to get data from all kind of data sources as for example plain files, Excel spreadsheets, databases and XML files * Use Pentaho Data Integration to perform CRUD (create, read, update, and delete) operations on databases * Populate a datamart with Pentaho Data Integration * Use Pentaho Data Integration for organizing files and folders, running daily processes, treating errors, and more In Detail This book shows and explains the new interactive features of Spoon, the revamped look and feel, and the newest features of the tool including Transformations and Jobs Executors and the invaluable Metadata Injection capability. We start with the installation of PDI software and then move on to cover all the key PDI concepts. Each chapter introduces new features, allowing you to gradually get involved with the tool. First, you will learn to do all kinds of data manipulation and work with plain files. Then, the book gives you a primer on databases and teaches you how to work with databases inside PDI. Moreover, you will be introduced to data warehouse concepts and you will learn how to load data in a data warehouse. Finally, you will have the opportunity of applying and reinforcing all the learned concepts through the implementation of a simple datamart. During the course of this book, you will be familiarized with the intuitive, graphical, drag-and-drop design environment. By the end of this book, you will learn everything you need to know in order to meet your data manipulation requirements.

All the Documentation You Need for Successfully Deploying Exchange Server 2003 --Author Barry Gerber shares his extensive real-world experience in easy-to-understand language in this comprehensive guide to Microsoft''s messaging and collaboration server. "Mastering Exchange Server 2003 systematically and sequentially walks you through all the essential concepts of planning and design, installation, deployment, administration and management, maintenance, and troubleshooting. With detailed background information, clear step-by-step, hands-on instructions, and realistic examples, Gerber teaches you how to devise and implement a system that is just right for your environment. He then leads you to the next level with advanced coverage on reliability and availability, disaster recovery, security solutions, wireless access, and building custom e-mail forms for Outlook. "Coverage Includes: Designing a new Exchange 2003 system Upgrading to Windows Server 2003 and Exchange Server 2003 Installing and configuring Exchange Server 2003, Windows Server 2003 as a domain controller, and Outlook 2003 from a customized server image Organizing Exchange users, distribution groups, and contacts Managing the Exchange Server hierarchy and core components Managing Exchange 2003 Internet services and services for Internet clients Installing and administrating additional Exchange Servers Performing advanced administration and management Ensuring Exchange Server reliability and availability Building Exchange Server system security Configuring wireless access to Exchange Server 2003 Creating and managing Outlook forms designer applications Exploring third-party applications for Exchange/Outlook clientsand Exchange Server AudienceNetwork/system administrators, consultants, application developers

Author Garry Robinson approaches this book differently than other Access books on the market: he keeps the focus on issues that will help protect your database. Written from an experienced developers point of view, he discusses protection and security task-by-task. This book is even recommended among Microsoft TechNet Security Topics: Threats and Countermeasures. Youll learn to hide tables as system tables, produce databases difficult to crack, and back up databases. You will learn how to keep staff from viewing salary tables, prevent customers from peeking at your distributed software design, and become a better judge of worthwhile security options (versus time-consuming choices).