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trixbox CE 2.6
by Kerry GarrisonThis book is a step-by-step tutorial with clear instructions and screenshots to guide you through the creation of a complete, cost-effective telephony system. With its "follow-along" style, you will start with installation, walk through the different features, see how to manage and maintain the system, and finally see how all the different pieces come together. If you want to learn how to install and configure either trixbox CE systems or Asterisk-based PBX systems, without struggling with confusing configuration files and cryptic scripts, this is "the" book for you. This book will also benefit readers who use trixbox CE and want to learn all its features, and how best to use them. It is ideal for any user wishing to set up a telephony system for small business usage. No previous knowledge of Trixbox or networking is required, although some basic knowledge of PBX and Linux would be an advantage.
Trolled (Lorimer Sports Stories)
by Steven SandorAndy's never been closer to his dream of making it to nationals. When a video of him flutterboard surfing goes viral, he uses the opportunity to crowdfund his trip there. But he goes from hero to zero when he pranks a promising female swimmer on camera. Everyone sees it, and no one is impressed. Banned from nationals and kicked off his swim team, he's got to unplug from his viral nightmare and figure out how to get his life—and his dream—back on course. Distributed in the U.S by Lerner Publishing Group.
The Trolls of Wall Street: How the Outcasts and Insurgents Are Hacking the Markets
by Nathaniel PopperThe dramatic story of an improbable gang of self-proclaimed “degenerates” who made WallStreetBets into a cultural movement that moved from the fringes of the internet to the center of Wall Street, upending the global financial markets and changing how an entire generation thinks about money, investing, and themselves. Jaime Rogozinski and Jordan Zazzara were not what anyone would mistake for traditional financial power players. But they turned WallStreetBets, a subreddit focused on risky financial trading, into one of the most disruptive forces to bubble up from the fringes of the internet. This crude and unassuming message board harnessed the power of memes and trolling to create a new kind of online community. The group intertwined with the distrust and turmoil of our times and spoke to a generation of young men who were struggling to find their place in the world. Deeply reported and fast moving, The Trolls of Wall Street is the suspenseful story of the people who made and lost millions, battling with each other—and with Wall Street—for power and status. It is a sobering account of how millions of young Americans became obsessed with money and the markets, casting a long and lasting influence over finance, politics, and popular culture.
Tropical Circuit Complexity: Limits of Pure Dynamic Programming (SpringerBriefs in Mathematics)
by Stasys JuknaThis book presents an enticing introduction to tropical circuits and their use as a rigorous mathematical model for dynamic programming (DP), which is one of the most fundamental algorithmic paradigms for solving combinatorial, discrete optimization problems. In DP, an optimization problem is broken up into smaller subproblems that are solved recursively. Many classical DP algorithms are pure in that they only use the basic (min,+) or (max,+) operations in their recursion equations. In tropical circuits, these operations are used as gates. Thanks to the rigorous combinatorial nature of tropical circuits, elements from the Boolean and arithmetic circuit complexity can be used to obtain lower bounds for tropical circuits, which play a crucial role in understanding the limitations and capabilities of these computational models. This book aims to offer a toolbox for proving lower bounds on the size of tropical circuits.In this work, the reader will find lower-bound ideas and methods that have emerged in the last few years, with detailed proofs. Largely self-contained, this book is meant to be approachable by graduate students in mathematics and computer science with a special interest in circuit complexity.
Troubleshoot and Optimize Windows 8 Inside Out
by Mike HalseyYou're beyond the basics, so dive right into optimizing Windows® 8--and really put your PC or tablet to work! This supremely organized reference packs hundreds of timesaving solutions, troubleshooting techniques, and workarounds. It's all muscle and no fluff. Discover how the experts keep their Windows 8 systems running smoothly--and challenge yourself to new levels of mastery. Master essential Windows 8 maintenance and security features Implement best practices to help prevent and combat viruses, malware, and identity theft Apply quick fixes to the most common problems using expert tips and step-by-step repair guides Use advanced troubleshooting techniques by understanding how Windows 8 works Develop a recovery plan to restore your system and data in the event of a disaster Know when to use power utilities for advanced performance, maintenance, and diagnostics
Troubleshoot PC Problems Yourself: Flash
by Anthony PriceThe books in this bite-sized new series contain no complicated techniques or tricky materials, making them ideal for the busy, the time-pressured or the merely curious. Based on Windows 7 Troubleshoot PC Problems Yourself is a short, simple and to-the-point guide to carrying out the bulk of maintenance and upgrade tasks for the Windows 7 operating system using little more than a single screwdriver and standard software tools. In just 96 pages, the reader will discover how to deal with most tasks without the costly help of an IT consultant.
Troubleshooting and Maintaining Your PC All-in-One Desk Reference For Dummies
by Dan GookinMaintaining a PC is important, and troubleshooting a PC can be a challenge. Dan Gookin is great at explaining how to handle common PC problems, and he's provided a complete, plain-English manual in Troubleshooting & Maintaining Your PC All-in-One For Dummies.Liberally laced with Dan's famous humor and clear instructions, Troubleshooting & Maintaining Your PC All-in-One For Dummies is divided into six minibooks covering hardware, software, laptops, Internet, networking, and maintenance. Each one gives you some background on what causes common problems, to help you understand what's wrong as well as how to fix it. You'll learn to:Troubleshoot both Windows XP and VistaSolve e-mail and Web woes, makes friends with ActiveX, and protect your system from evil software and virusesResolve router problems, reset the modem, delve into IP addresses, and find the elusive wireless networkInvestigate startup issues, battery quirks, and power problemsTravel safely and efficiently with your laptopPerform regular maintenance and keep good backupsSolve problems with disks and printersFind missing files, successfully restore files if something major goes wrong, and pep up your PCThe bonus DVD walks you through some of the complex steps discussed in the book and demonstrates tasks like removing a hard drive. There's a great collection of free and demo software, too. Troubleshooting & Maintaining Your PC All-in-One For Dummies is tech support in a book!Note: CD-ROM/DVD and other supplementary materials are not included as part of eBook file.
Troubleshooting and Maintaining Your PC All-in-One For Dummies
by Dan GookinStop being a prisoner to your PC! Need a PC problem fixed in a pinch? Presto! Troubleshooting & Maintaining Your PC All-in-One For Dummies offers 5 books in 1 and takes the pain out of wading through those incomprehensible manuals, or waiting for a high-priced geek to show up days or weeks after you need them. Arming you with everything you need to get that pesky PC working for you ASAP, this handy guide walks you through all the steps to restoring whatever's making your PC go rogue —so you can get back to making it work for you. There's nothing worse than firing up your PC only to discover it's inexplicably unresponsive. With this guide, you'll gain all the skills and insight you need to need to bring it back to life —and to prevent it from ever leaving you in the lurch again. Find out what's behind common PC problems Solve email and web woes, both big and small Perform regular maintenance and get serious about backups Troubleshoot to find solutions to your issues and learn proper maintenance to head off future headaches! Your PC problems aren't as big as you think! Take matters into your own hands with the helpful instruction provided inside this book!
Troubleshooting and Supporting Windows 11: Creating Robust, Reliable, Sustainable, and Secure Systems
by Mike HalseyDiagnose, troubleshoot and repair any type of problems on your PC from startup and file access to cloud services and the issues caused by hybrid-work. This book contains everything you need to know to keep PC systems running optimally, and to repair problems quickly and efficiently. This book provides a deep dive into the Windows OS, detailing what everything is, and how it works. You will learn about the in-built, additional, and third-party tools and utilities you can use to create reliable, robust and secure PC systems. Further, you will learn how to configure Windows 11 so as to avoid problems occurring, and how to support every type of end user, working from home, or in any part of the world, speaking any language, and taking into account other factors such as ability or personal barriers. You will discover the support tools and support ecosystem you can use to create and manage effective support tracking and remote access. You will discover how to get detailed events and reliability information, and how to manage update channels. You will deep dive into Windows 11 operating system and folder structure and learn app and software troubleshooting, process and service troubleshooting, network and internet troubleshooting and hardware and peripherals troubleshooting. Finally, you will learn more advanced troubleshooting techniques like security and encryption troubleshooting and using PowerShell scripting to repair problems. Further, you will also learn how to manually remove malware and ransomware, registry troubleshooting and startup and repair troubleshooting. By the end, you will know how to troubleshoot complex problems and diagnose hardware problems in a PC. You will be able to troubleshoot and repair any type of problem on a Windows 11 PC. What Will You Learn How to support home and hybrid-workers using their own PCsUsing scripting and PowerShell to troubleshoot and repair systemsManaging networking and internet access to minimize downtimeManaging installation and troubleshoot for updates and patches Who Is This Book For IT Pros and system administrators who have to maintain small or large networks of connected PCs locally at their organization, or with hybrid workers.
Troubleshooting CentOS
by Jonathan HobsonIt is assumed that you will already have a server up and running, you have a good working knowledge of CentOS, and you are comfortable with the concept of working with those services used by your server.
Troubleshooting Citrix XenApp®
by Dragos Madarasan Suraj PatilIdentify and resolve key Citrix XenApp® issues using trusted troubleshooting and monitoring techniques About This Book * Understand the key troubleshooting methodologies when working with XenApp 7.5 version and above * Uncover effective tips and techniques to solve real-world XenApp® infrastructure problems * This is a fast-paced guide to developing key troubleshooting and problem resolution skills you can put to use in a Citrix environment Who This Book Is For This book is for Citrix Administrators or Citrix Engineers who are currently managing Citrix XenApp® in a production environment and want to learn how to troubleshoot XenApp® issues in the shortest possible time. It is assumed that you have a basic understanding of XenApp's components and how to implement and manage a XenApp® infrastructure. What You Will Learn * Get to know about troubleshooting methodologies and perform a root cause analysis of the problem * Understand the individual components and interactions required for a successful XenApp environments * Identify and troubleshoot issues around the core Citrix components * Identify XenApp® components and their roles and learn how they interact with the communication channels * Gain tips and tricks to optimize Citrix deployments * Monitor and optimize the XenApp® environment In Detail Citrix XenApp® is an application virtualization product from Citrix. It allows users to connect to their corporate applications from various computer systems and even mobile devices. XenApp® has grown into a complex software with ever-expanding infrastructures in place. Together with tight integrations with other systems such as Terminal Services, Active Directory, and other third-party authentication services, troubleshooting XenApp® has become more complicated. This book teaches you how to approach troubleshooting complex issues with XenApp® deployments and understand the problem, find a fix or workaround, determine the root cause, and apply corrective steps wherever applicable. The book progresses to give you an idea about the many supportive components that play an important role in XenApp's application delivery model and should be considered while troubleshooting XenApp® issues. It also shows you standard troubleshooting processes so that you can resolve complex XenApp® issues in a mission critical environment. By the end of this book, you will see how and where to use supportive components that help minimize XenApp® issues. Also, we'll explain various tools that can be useful when monitoring and optimizing entire application and desktop delivery model. Style and approach This is an easy-to-follow, fast-paced, example-oriented guide with a brief explanation on various troubleshooting methodologies to walk you through a host of real-life problems.
Troubleshooting Citrix XenDesktop®
by Gurpinder SinghThe ultimate troubleshooting guide for clear, concise, and real-world solutions to a wide range of common Citrix XenDesktop problemsAbout This BookExplore the XenDesktop architecture and work with various troubleshooting tools that every Citrix admin should know aboutDiscover how to troubleshoot performance, VDA registration, and NetScaler integration issuesA fast-paced troubleshooting guide to help you identify and resolve any kind of problem you might face while working with Citrix XenDesktopWho This Book Is ForTroubleshooting Citrix XenDesktop is targeted at Citrix Administrators or Citrix Engineers who are working on Xendesktop and want to learn tips and techniques required to deal with the issues they face in their day-to-day life. A working knowledge of core elements and concepts of Xendesktop would be an added advantage.What You Will LearnSolve VDA registration problems and Citrix session launch difficultiesIdentify and resolve XenDesktop service issuesTroubleshoot performance issues related to the XenDesktop architectureWork around common printing issuesUnderstand the Citrix XenDesktop HDX policies and deal with the HDX MediaStream challengesResolve the common MCS and PVS configuration issues in your XenDesktop environmentFind solutions to some general issues that have been identified and recorded by Citrix in their database that every administrator must be aware ofIn DetailIn today's world, many organizations have decided to move to secure and stable VDI platforms to benefit their organization to meet their security needs. To meet an organization's requirements, Citrix XenDesktop serves as the best desktop virtualization solution available, providing the optimum user experience.Troubleshooting Citrix XenDesktop is a single resource guide that will help you dig deep into all the technical issues you encounter to resolve them using an autonomous and well-defined approach.The book starts by walking you through the XenDesktop architecture and the troubleshooting toolkit for Citrix XenDesktop. The subsequent chapters will help you identify possible causes of various types of Citrix XenDesktop problems that may arise while installing, configuring, or troubleshooting day-to-day problems. You will also be dealing with the most common and important VDA registration problems that you might often face while working with the XenDesktop product suite. Additionally, you will resolve issues that arise while launching Citrix sessions, troubleshoot performance issues, and learn how to integrate Citrix NetScaler with your XenDesktop environment.Style and approachThis book is an easy-to-follow troubleshooting guide with real-world examples of resolving XenDesktop issues. Each chapter is focused on a specific troubleshooting area, giving you the time to learn about and apply relevant tools and practices to troubleshoot the problems using a systematic approach.
Troubleshooting Docker
by John Wooten Rajdeep Dua Vaibhav KohliStrategically design, troubleshoot, and automate Docker containers from development to deployment About This Book • Utilize current and emergent technologies for effective Docker orchestration and management • A step-by-step guide to diagnosing and fixing problems with Docker containers. Who This Book Is For This book is intended for seasoned solutions architects, developers, and programmers, system engineers, and administrators to help you troubleshoot common areas of Docker containerization. If you are looking to build production-ready Docker containers for automated deployment, you will be able to master and troubleshoot both the basic functions and the advanced features of Docker. Advanced familiarity with the Linux command line syntax, unit testing, the Docker Registry, Github, and leading container hosting platforms and Cloud Service Providers (CSP) are the prerequisites. What You Will Learn • Install Docker ecosystem tools and services, Microservices and N-tier applications • Create re-usable, portable containers with help of automation tools • Network and inter-link containers • Attach volumes securely to containers • Consume and troubleshoot Docker APIs • Troubleshooting issue of Docker deployment in Public cloud • Ease the process of container management with Kubernetes In Detail This book will traverse some common best practices to for complex application scenarios where troubleshooting can be successfully employed to provide the repeatable processes and advantages that containers can deliver. This book will be a practical guide showing how to fix real-life issues related to installation, memory, Dockerfile syntax, connection, authorization, networking and so on in Docker. This book will also teach how to solve errors that occur during advanced setup and administration and deployment in a step-by-step fashion. By sequentially working through the real-world production scenarios in each chapter throughout the book, you will gain insight into and mastery of common areas not only for effective troubleshooting, but ways and means to avoid troubleshooting in the first place. This book will also cover tips and tricks that make the workflow easier. Style and approach An easy-to-follow guide full of interactive examples of real-world development and deployment scenarios. Ample screenshots, workflows, complementary tools, and related terminal commands are provided to address a wide range of practical and situational applications.
Troubleshooting Electric Motors (Fourth Edition)
by Glenn A. Mazur Thomas E. ProctorTroubleshooting Electric Motors is a text/workbook that includes information and procedures for troubleshooting motors and motor circuits commonly used in industrial applications. It includes all aspects of troubleshooting, from locating the problem using test instruments to selecting the correct motor for replacement. Each chapter concludes with activities and trade tests to help reinforce troubleshooting concepts. This edition includes an introduction to test instruments, AC and DC generators, and servo-motors. Information on energy-efficient motors and safety has been expanded.
Troubleshooting Finite-Element Modeling with Abaqus: With Application in Structural Engineering Analysis
by Raphael Jean BoulbesThis book gives Abaqus users who make use of finite-element models in academic or practitioner-based research the in-depth program knowledge that allows them to debug a structural analysis model. The book provides many methods and guidelines for different analysis types and modes, that will help readers to solve problems that can arise with Abaqus if a structural model fails to converge to a solution. The use of Abaqus affords a general checklist approach to debugging analysis models, which can also be applied to structural analysis.The author uses step-by-step methods and detailed explanations of special features in order to identify the solutions to a variety of problems with finite-element models. The book promotes: • a diagnostic mode of thinking concerning error messages; • better material definition and the writing of user material subroutines; • work with the Abaqus mesher and best practice in doing so; • the writing of user element subroutines and contact features with convergence issues; and• consideration of hardware and software issues and a Windows HPC cluster solution.The methods and information provided facilitate job diagnostics and help to obtain converged solutions for finite-element models regarding structural component assemblies in static or dynamic analysis. The troubleshooting advice ensures that these solutions are both high-quality and cost-effective according to practical experience. The book offers an in-depth guide for students learning about Abaqus, as each problem and solution are complemented by examples and straightforward explanations. It is also useful for academics and structural engineers wishing to debug Abaqus models on the basis of error and warning messages that arise during finite-element modelling processing.
Troubleshooting for Network Operators: The Road to a New Paradigm with Encrypted Traffic
by Van Van Tong Sami Souihi Hai-Anh Tran Abdelhamid MelloukNowadays, the Internet is becoming more and more complex due to an everincreasing number of network devices, various multimedia services and a prevalence of encrypted traffic. Therefore, in this context, this book presents a novel efficient multi modular troubleshooting architecture to overcome limitations related to encrypted traffic and high time complexity. This architecture contains five main modules: data collection, anomaly detection, temporary remediation, root cause analysis and definitive remediation. In data collection, there are two sub modules: parameter measurement and traffic classification. This architecture is implemented and validated in a software-defined networking (SDN) environment.
Troubleshooting iOS
by Paul McfedriesUnderstand and solve many different kinds of iPhone and iPad problems. This book covers both general troubleshooting techniques applicable in a wide variety of situations as well as specific fixes for topics such as networking, apps, photos, the battery, and syncing. Glitches, hiccups, and crashes just aren't supposed to happen with iOS, but alas, all too often they do. It is these non-obvious fixes, workarounds, and preventative measures that form the core of iOS Troubleshooting. With clear, straightforward prose, this book will take the reader through hundreds of iOS problems, explain the reasons for them, and provide easy to understand solutions to get the device (and you) back in business. What you'll learn: Fix cellular and networking connections Incorporate accessories effectively Solve battery and charging issues Clear up syncing and iCloud glitches Who this book is for: Any person who uses an iOS device.
Troubleshooting Java: Read, debug, and optimize JVM applications
by Laurentiu SpilcaEffectively reading and understanding existing code is a developer&’s superpower. In this book, you&’ll master techniques for code profiling, advanced debugging, and log evaluation to find and fix bugs and performance problems.In Troubleshooting Java: Read, debug, and optimize JVM applications you will learn how to: Determine what code does the first time you see it Expose code logic problems Evaluate heap dumps to find memory leaks Monitor CPU consumption to optimize execution Use thread dumps to find and solve deadlocks Easily follow a service-oriented or microservices system Properly use logging to better understand Java app execution Use Java debuggers efficiently Searching for bugs, detangling messy legacy code, or evaluating your codebase for new features sucks up much of a developer's time. Troubleshooting Java: Read, debug, and optimize JVM applications teaches code investigation techniques that will help you efficiently understand how Java apps work, how to optimize them, and how to fix the bugs that break them. You&’ll go from the basics of debugging to advanced methods for locating problems in microservices architectures, and save yourself hours—or even days—of time. Each new technique is explained with lively illustrations and engaging real-world examples. About the technology Fact: Over the course of your career, you&’ll spend far more time reading code than you will writing it. The code investigation skills in this book will radically improve your efficiency in understanding and improving Java applications. About the book Troubleshooting Java: Read, debug, and optimize JVM applications presents practical techniques for exploring and repairing unfamiliar code. In it, you&’ll learn timesaving practices for discovering hidden dependencies, discovering the root causes of crashes, and interpreting unexpected results. Go beyond profiling and debugging and start understanding how Java applications really work. What's inside Determine what code does the first time you see it Evaluate heap dumps to find memory leaks Monitor CPU consumption to optimize execution Use thread dumps to find and solve deadlocks Uncover glitches in code logic Locate intermittent runtime problems About the reader For intermediate Java developers. About the author Laurentiu Spilca is a skilled Java and Spring developer and an experienced technology instructor. He is the author of Spring Start Here and Spring Security in Action. Table of Contents PART 1 - THE BASICS OF INVESTIGATING A CODEBASE 1 Revealing an app&’s obscurities 2 Understanding your app&’s logic through debugging techniques 3 Finding problem root causes using advanced debugging techniques 4 Debugging apps remotely 5 Making the most of logs: Auditing an app&’s behavior PART 2 - DEEP ANALYSIS OF AN APP&’S EXECUTION 6 Identifying resource consumption problems using profiling techniques 7 Finding hidden issues using profiling techniques 8 Using advanced visualization tools for profiled data 9 Investigating locks in multithreaded architectures 10 Investigating deadlocks with thread dumps 11 Finding memory-related issues in an app&’s execution PART 3 - FINDING PROBLEMS IN LARGE SYSTEMS 12 Investigating apps&’ behaviors in large systems
Troubleshooting & Maintaining PCs All-in-One For Dummies
by Dan GookinShow your PC who’s boss Nothing’s more annoying than a tech malfunction, especially when it’s your PC—with the exception of perhaps wading through reams of random, unreliable theories online looking for a solution, or paying an expensive tech geek to show up to perform a five-minute fix. The latest edition of Troubleshooting & Maintaining Your PC All-in-One For Dummies puts all this frustration behind you and gets you straight to work solving the problem yourself! In his straightforward, friendly style, Dan Gookin—bestselling tech author and all-round Mr. Fixit—packs everything you need to know into 5-books-in-1, giving you the knowledge and process to hit on the right solution, fast. From identifying common problems to methodically narrowing down to the correct fix, you’ll save hours of frustrating research—and experience the sweet, righteous satisfaction of having achieved it all yourself. Pick up quick fixes Understand and reconnect networks Restore memory Boost your PC’s performance Every problem has a solution and PCs are no different: get this book and you’ll never catch yourself shouting at your monitor or frustrated with the motherboard again—well, maybe not quite so often.
Troubleshooting & Maintaining Your PC All-in-One For Dummies, 2nd Edition
by Dan GookinDiagnose and solve your PC problems with this easy-to-understand guide Written by veteran For Dummies author Dan Gookin, this straightforward guide shows you how to diagnose and solve the most common hardware and software problems your PC may encounter. In addition, he presents advice for preventing PC problems in the first placeand clearly explains how to create a safe and secure PC environment. Walks you through ways to diagnose the most common PC hardware, software, and operating system problems Offers clear and easy-to-understand solutions for confidently handling these problems Shares valuable advice about maintaining your system to maximize its lifespan Reviews an array of useful tools Covers Windows Vista, Windows 7, and Internet Explorer 8 Troubleshooting & Maintaining Your PC All-in-One For Dummies, 2nd Edition helps you to confidently handle whatever PC problems you may encounter.
Troubleshooting Microsoft Teams: Enlisting the Right Approach and Tools in Teams for Mapping and Troubleshooting Issues
by Balu N Ilag Arun M SabaleLearn and understand Microsoft Teams functionality, potential issues, and the tools available to troubleshoot Teams. This book provides a complete overview of Teams Phone system (PSTN) connectivity, call routing and quality troubleshooting, and best practices to support a Teams environment.The book begins with an introduction to Microsoft Teams and it provides a troubleshooting terminology. You will understand how to identify and develop a systematic approach for troubleshooting Teams. You will learn Teams Phone (voice) management and how to handle issues related to: Direct Routing connectivity, call routing, emergency calling, and much more. The book covers issues related to Teams client-side and external access along with Teams call quality troubleshooting. You will gain knowledge of real-world issues and use Teams troubleshooting tools such as the: Connectivity Analyzer, call diagnostic tool, SBC Syslog, Call Quality Dashboard, and quality analytics tool. You will go through the: Call Quality Dashboard with custom queries, PowerBI connector tool for the Teams Call Quality Dashboard, Teams Phone system Direct Routing Health Dashboard for call quality troubleshooting, and learn how to design PowerBI-based Teams reports.After reading this book, you will be able to quickly diagnose Teams connectivity and quality problems, and discover the root cause of any Teams issue. This book also is a practical guide you can use to prepare for the certification exam on troubleshooting Microsoft Teams (Exam MS-740).What You Will LearnUnderstand Microsoft Teams service components and their functionalityUnderstand unique approaches and techniques to identify an issue, capture the diagnostic log, and analyze the logDetect poor audio/video calls and troubleshoot underlying problemsTroubleshoot and administer Teams Phone system connectivity and call routing issuesUse the Call Quality Dashboard, and Analytics, for call quality troubleshootingUnderstand and design a custom call report based on PowerBI report templatesPrepare for the certification exam on troubleshooting Microsoft Teams (Exam MS-740)Who This Book Is ForMicrosoft Teams administrators, support engineers, helpdesk engineers, telecom admins, and network engineers
Troubleshooting NetScaler
by Raghu Varma TirumalarajuGain essential knowledge and keep your NetScaler environment in top form About This Book * Learn how the main features - Load Balancing, Content Switching, GSLB, SSL offloading, AAA, AppFirewall, and Gateway work under the hood using vividly explained flows and traces * Explore the NetScaler layout and the various logs, tools and methods available to help you when it's time to debug * An easy-to-follow guide, which will walk you through troubleshooting common issues in your NetScaler environment Who This Book Is For This book is aimed at NetScaler administrators who have a basic understanding of the product but are looking for deeper exposure and guidance in identifying and fixing issues to keep their application environment performing optimally. What You Will Learn * Troubleshoot traffic management features such as load balancing, SSL, GSLB and content switching * Identify issues with caching and compression * Deal with authentication issues when using LDAP, RADIUS, certificates, Kerberos and SAML * Diagnose NetScaler high availability and networking issues * Explore how application firewall protections work and how to avoid false positives * Learn about NetScaler Gateway integration issues with XenApp, XenDesktop, and XenMobile * Deal with NetScaler system-level issues * Discover the NetScaler troubleshooting tools In Detail NetScaler is a high performance Application Delivery Controller (ADC). Making the most of it requires knowledge that straddles the application and networking worlds. As an ADC owner you will also likely be the first person to be solicited when your business applications fail. You will need to be quick in identifying if the problem is with the application, the server, the network, or NetScaler itself. This book provides you with the vital troubleshooting knowledge needed to act fast when issues happen. It gives you a thorough understanding of the NetScaler layout, how it integrates with the network, and what issues to expect when working with the traffic management, authentication, NetScaler Gateway and application firewall features. We will also look at what information to seek out in the logs, how to use tracing, and explore utilities that exist on NetScaler to help you find the root cause of your issues. Style and approach This helpful guide to troubleshooting NetScaler is delivered in a comprehensive and easy-to-follow manner. The topics in the book adopt a step-by-step approach.
Troubleshooting OpenStack
by Tony CampbellGet unstuck and start stacking! About This Book * Easily fix the nagging problems that commonly plague OpenStack and become the go-to person in your organization * Get better equipped to troubleshoot and solve common problems in performance, availability, and automation that confront production-ready OpenStack environments * Save time and decrease frustration by solving significant issues that arise from OpenStack deployments pertaining to storage and networking Who This Book Is For You will need a basic understanding of OpenStack, Linux, and Cloud computing. If you have an understanding of Linux, this book will help you leverage that knowledge in the world of OpenStack, giving you confidence to tackle most issues that may arise. What You Will Learn * Diagnose and remediate authentication and authorization problems in Keystone * Fix common issues with images served through Glance * Master the art of troubleshooting Neutron networking * Navigate and overcome problems with Nova * Troubleshoot and resolve Cinder block storage issues * Identify and correct Swift object storage problems * Isolate and fix issues caused by Heat orchestration * Leverage Ceilometer and other metering and monitoring tools for effective troubleshooting In Detail OpenStack is a collection of software projects that work together to provide a cloud fabric. OpenStack is one of the fastest growing open source projects in history that unlocks cloud computing for everyone. With OpenStack, you are able to create public or private clouds on your own hardware. The flexibility and control afforded by OpenStack puts the cloud within reach of anyone willing to learn this technology. Starting with an introduction to OpenStack troubleshooting tools, we'll walk through each OpenStack service and how you can quickly diagnose, troubleshoot, and correct problems in your OpenStack. Understanding the various projects and how they interact is essential for anyone attempting to troubleshoot an OpenStack cloud. We will start by explaining each of the major components and the dependencies between them, and move on to show you how to identify and utilize an effective set of OpenStack troubleshooting tools and fix common Keystone problems. Next, we will expose you to common errors and problems you may encounter when using the OpenStack Block Storage service (Cinder). We will then examine Heat, the OpenStack Orchestration Service, where you will learn how to trace errors, determine their root cause, and effectively correct the issue. Finally, you will get to know the best practices to architect your OpenStack cloud in order to achieve optimal performance, availability, and reliability. Style and approach This is straight-to-the point guide to fixing your OpenStack cluster. Common problems are identified and suggestions to resolve these problems are presented in a simple, easy-to-understand manner.
Troubleshooting OpenVPN
by Eric F. CristThe book is for system administrators who are experienced and well versed with OpenVPN. You should possess intermediate to master level proficiency with OpenVPN. All OpenVPN users can leverage this book.
Troubleshooting Oracle Performance
by Christian AntogniniTroubleshooting Oracle Performance, 2nd Edition is your systematic guide to diagnosing and resolving performance problems in database-backed applications involving Oracle's database engine. Christian Antognini brings a decade and a half experience to his topic. His first edition is one of the most well-respected books in its field. This second edition has been rigorously updated to cover the latest developments in Oracle Database 11g Release 2 through Oracle Database 12c. What do you do when your database application isn't running fast enough? You troubleshoot, of course. Finding the slow part of an application is often the easy part of the battle. It's finding a solution that's difficult. Troubleshooting Oracle Performance, 2nd Edition helps by providing a systematic approach to addressing the underlying causes of poor database application performance. The author freely shares his experience while explaining the underlying foundations of how SQL statements are executed by the Oracle database engine. You'll be able to draw a solid foundation of theory and shared experience as you face head-on the performance challenges in your daily work. Written for developers by an application developer who has learned by doing Gives a systematic approach to solving database application performance problems Helps you plan for performance as you would for any other application requirement What you'll learn Systematically identify performance problems Configure the query optimizer to meet performance goals Read and recognize inefficient execution plans Minimize the impact of parsing upon performance Optimize data access, joins, and the physical design of your database Improve performance through parallel processing, materialized views, and result caching Apply SQL tuning techniques such as hints, SQL profiles, stored outlines, and SQL plan baselines Reduce inefficiencies from too much procedural code Who this book is for Troubleshooting Oracle Performance, Second Edition is targeted at application developers and database administrators involved in troubleshooting performance problems in Oracle-based applications. Table of Contents Part I: Foundations 1. Performance Problems 2. Key Concepts Part II: Identification 3. Analysis of Reproducible Problems 4. Real-Time Analysis of Irreproducible Problems 5. Postmortem Analysis of Irreproducible Problems Part III: Query Optimizer 6. Introducing the Query Optimizer 7. System Statistics 8. Object Statistics 9. Configuring the Query Optimizer 10. Execution Plans Part IV: Optimization 11. SQL Tuning Techniques 12. Parsing 13. Optimizing Data Access 14. Optimizing Joins 15. Beyond Data Access and Join Optimization 16. Optimizing the Physical Design Appendix A