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Top 50 Docker Interview Questions and Answers

Author : Knowledge Powerhouse

Publisher :

Page : 43 pages

File Size : 32,61 MB

Release : 2016-12-22

Category :

ISBN : 9781520212500

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Book Description

This book contains basic to expert level Docker interview questions that an interviewer asks. Each question is accompanied with an answer so that you can prepare for job interview in short time. We have compiled this list after attending dozens of technical interviews in top-notch companies like- Google, Facebook, Netflix, Amazon etc.Often, these questions and concepts are used in our daily programming work. But these are most helpful when an Interviewer is trying to test your deep knowledge of Docker.The difficulty rating on these Questions varies from a Fresher level software programmer to a Senior software programmer. Once you go through them in the first pass, mark the questions that you could not answer by yourself. Then, in second pass go through only the difficult questions. After going through this book 2-3 times, you will be well prepared to face a technical interview on Docker for an experienced programmer.Sample Questions are:What is Docker?What is the difference between Docker image and Docker container?How will you remove an image from Docker?How is a Docker container different from a hypervisor?Can we write compose file in json file instead of yaml?Can we run multiple apps on one server with Docker?What are the common use cases of Docker?What are the main features of Docker-compose?What is the most popular use of Docker?What is the role of open source development in the popularity of Docker?What is the difference between Docker commands: up, run and start?What is Docker Swarm?What are the features of Docker Swarm?What is a Docker Image?What is a Docker Container?What is Docker Machine?Why do we use Docker Machine?How will you create a Container in Docker?Do you think Docker is Application-centric or Machine-centric?Can we lose our data when a Docker Container exits?Can we run more than one process in a Docker container?What are the objects created by Docker Cloud in Amazon Web Services (AWS) EC2?How will you take backup of Docker container volumes in AWS S3?What are the three main steps of Docker Compose?What is Pluggable Storage Driver architecture in Docker based containers?What is Docker Hub?What are the main features of Docker Hub?What are the main security concerns with Docker based containers?What are the security benefits of using Container based system?How can we check the status of a Container in Docker?What are the main benefits of using Docker?How does Docker simplify Software Development process?What is the basic architecture behind Docker?What are the popular tasks that you can do with Docker Command line tool?What type of applications- Stateless or Stateful are more suitable for Docker Container?How can Docker run on different Linux distributions?Why do we use Docker on top of a virtual machine?How can Docker container share resources?What is the difference between Add and Copy command in a Dockerfile?What is Docker Entrypoint?What is ONBUILD command in Docker?What is Build cache in Docker?What are the most common instructions in Dockerfile?What is the purpose of EXPOSE command in Dockerfile?What are the different kinds of namespaces available in a Container?How will you monitor Docker in production?What are the Cloud platforms that support Docker?How can we control the startup order of services in Docker compose?Why Docker compose does not wait for a container to be ready before moving on to start next service in dependency order?How will you customize Docker compose file for different environments?



Java/J2EE Job Interview Companion

Author : Arulkumaran Kumaraswamipillai

Publisher :

Page : 356 pages

File Size : 50,48 MB

Release : 2007

Category : Computers

ISBN : 9781411668249

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Book Description

400+ Java/J2EE Interview questions with clear and concise answers for: job seekers (junior/senior developers, architects, team/technical leads), promotion seekers, pro-active learners and interviewers. Lulu top 100 best seller. Increase your earning potential by learning, applying and succeeding. Learn the fundamentals relating to Java/J2EE in an easy to understand questions and answers approach. Covers 400+ popular interview Q&A with lots of diagrams, examples, code snippets, cross referencing and comparisons. This is not only an interview guide but also a quick reference guide, a refresher material and a roadmap covering a wide range of Java/J2EE related topics. More Java J2EE interview questions and answers & resume resources at http: //www.lulu.com/java-succes



The DevOps Engineer's Career Guide

Author : Stephen Fleming

Publisher :

Page : 174 pages

File Size : 49,9 MB

Release : 2019-02-27

Category : Computers

ISBN : 9781644670804

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Book Description

Well, in the last four months, I have been involved in the recruitment process of various DevOps related jobs in my current project. I have come across multiple Entry Level and Mid-Level career professionals inquisitive about expectations of the role and how their earlier experience would contribute to the DevOps role.



Docker in Practice, Second Edition

Author : Ian Miell

Publisher : Simon and Schuster

Page : 707 pages

File Size : 34,7 MB

Release : 2019-02-06

Category : Computers

ISBN : 1638356300

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Book Description

Summary Docker in Practice, Second Edition presents over 100 practical techniques, hand-picked to help you get the most out of Docker. Following a Problem/Solution/Discussion format, you'll walk through specific examples that you can use immediately, and you'll get expert guidance on techniques that you can apply to a whole range of scenarios. Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications. About the Technology Docker's simple idea-wrapping an application and its dependencies into a single deployable container-created a buzz in the software industry. Now, containers are essential to enterprise infrastructure, and Docker is the undisputed industry standard. So what do you do after you've mastered the basics? To really streamline your applications and transform your dev process, you need relevant examples and experts who can walk you through them. You need this book. About the Book Docker in Practice, Second Edition teaches you rock-solid, tested Docker techniques, such as replacing VMs, enabling microservices architecture, efficient network modeling, offline productivity, and establishing a container-driven continuous delivery process. Following a cookbook-style problem/solution format, you'll explore real-world use cases and learn how to apply the lessons to your own dev projects. What's inside Continuous integration and delivery The Kubernetes orchestration tool Streamlining your cloud workflow Docker in swarm mode Emerging best practices and techniques About the Reader Written for developers and engineers using Docker in production. About the Author Ian Miell and Aidan Hobson Sayers are seasoned infrastructure architects working in the UK. Together, they used Docker to transform DevOps at one of the UK's largest gaming companies. Table of Contents PART 1 - DOCKER FUNDAMENTALS Discovering Docker Understanding Docker: Inside the engine room PART 2 - DOCKER AND DEVELOPMENT Using Docker as a lightweight virtual machine Building images Running containers Day-to-day Docker Configuration management: Getting your house in order PART 3 - DOCKER AND DEVOPS Continuous integration: Speeding up your development pipeline Continuous delivery: A perfect fit for Docker principles Network simulation: Realistic environment testing without the pain PART 4 - ORCHESTRATION FROM A SINGLE MACHINE TO THE CLOUD A primer on container orchestration The data center as an OS with Docker Docker platforms PART 5 - DOCKER IN PRODUCTION Docker and security Plain sailing: Running Docker in production Docker in production: Dealing with challenges



Jesus Outside the Lines

Author : Scott Sauls

Publisher : Tyndale House Publishers, Inc.

Page : 289 pages

File Size : 20,63 MB

Release : 2015-03-01

Category : Religion

ISBN : 1496403835

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Book Description

Whether the issue of the day on Twitter, Facebook, or cable news is our sexuality, political divides, or the perceived conflict between faith and science, today’s media pushes each one of us into a frustrating clash between two opposing sides. Polarizing, us-against-them discussions divide us and distract us from thinking clearly and communicating lovingly with others. Scott Sauls, like many of us, is weary of the bickering and is seeking a way of truth and beauty through the conflicts. Jesus Outside the Lines presents Jesus as this way. Scott shows us how the words and actions of Jesus reveal a response that does not perpetuate the destructive fray. Jesus offers us a way forward—away from harshness, caricatures, and stereotypes. In Jesus Outside the Lines, you will experience a fresh perspective of Jesus, who will not (and should not) fit into the sides.



Build a Career in Data Science

Author : Emily Robinson

Publisher : Manning

Page : 352 pages

File Size : 16,94 MB

Release : 2020-03-24

Category : Computers

ISBN : 1617296244

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Book Description

Summary You are going to need more than technical knowledge to succeed as a data scientist. Build a Career in Data Science teaches you what school leaves out, from how to land your first job to the lifecycle of a data science project, and even how to become a manager. Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications. About the technology What are the keys to a data scientist’s long-term success? Blending your technical know-how with the right “soft skills” turns out to be a central ingredient of a rewarding career. About the book Build a Career in Data Science is your guide to landing your first data science job and developing into a valued senior employee. By following clear and simple instructions, you’ll learn to craft an amazing resume and ace your interviews. In this demanding, rapidly changing field, it can be challenging to keep projects on track, adapt to company needs, and manage tricky stakeholders. You’ll love the insights on how to handle expectations, deal with failures, and plan your career path in the stories from seasoned data scientists included in the book. What's inside Creating a portfolio of data science projects Assessing and negotiating an offer Leaving gracefully and moving up the ladder Interviews with professional data scientists About the reader For readers who want to begin or advance a data science career. About the author Emily Robinson is a data scientist at Warby Parker. Jacqueline Nolis is a data science consultant and mentor. Table of Contents: PART 1 - GETTING STARTED WITH DATA SCIENCE 1. What is data science? 2. Data science companies 3. Getting the skills 4. Building a portfolio PART 2 - FINDING YOUR DATA SCIENCE JOB 5. The search: Identifying the right job for you 6. The application: Résumés and cover letters 7. The interview: What to expect and how to handle it 8. The offer: Knowing what to accept PART 3 - SETTLING INTO DATA SCIENCE 9. The first months on the job 10. Making an effective analysis 11. Deploying a model into production 12. Working with stakeholders PART 4 - GROWING IN YOUR DATA SCIENCE ROLE 13. When your data science project fails 14. Joining the data science community 15. Leaving your job gracefully 16. Moving up the ladder



T-SQL Window Functions

Author : Itzik Ben-Gan

Publisher : Microsoft Press

Page : 716 pages

File Size : 11,14 MB

Release : 2019-10-18

Category : Computers

ISBN : 0135861624

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Book Description

Use window functions to write simpler, better, more efficient T-SQL queries Most T-SQL developers recognize the value of window functions for data analysis calculations. But they can do far more, and recent optimizations make them even more powerful. In T-SQL Window Functions, renowned T-SQL expert Itzik Ben-Gan introduces breakthrough techniques for using them to handle many common T-SQL querying tasks with unprecedented elegance and power. Using extensive code examples, he guides you through window aggregate, ranking, distribution, offset, and ordered set functions. You’ll find a detailed section on optimization, plus an extensive collection of business solutions — including novel techniques available in no other book. Microsoft MVP Itzik Ben-Gan shows how to: • Use window functions to improve queries you previously built with predicates • Master essential SQL windowing concepts, and efficiently design window functions • Effectively utilize partitioning, ordering, and framing • Gain practical in-depth insight into window aggregate, ranking, offset, and statistical functions • Understand how the SQL standard supports ordered set functions, and find working solutions for functions not yet available in the language • Preview advanced Row Pattern Recognition (RPR) data analysis techniques • Optimize window functions in SQL Server and Azure SQL Database, making the most of indexing, parallelism, and more • Discover a full library of window function solutions for common business problems About This Book • For developers, DBAs, data analysts, data scientists, BI professionals, and power users familiar with T-SQL queries • Addresses any edition of the SQL Server 2019 database engine or later, as well as Azure SQL Database Get all code samples at: MicrosoftPressStore.com/TSQLWindowFunctions/downloads



Learning Docker

Author : Jeeva S. Chelladhurai

Publisher : Packt Publishing Ltd

Page : 289 pages

File Size : 13,27 MB

Release : 2017-05-31

Category : Computers

ISBN : 178646201X

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Book Description

Docker lets you create, deploy, and manage your applications anywhere at anytime – flexibility is key so you can deploy stable, secure, and scalable app containers across a wide variety of platforms and delve into microservices architecture About This Book This up-to-date edition shows how to leverage Docker's features to deploy your existing applications Learn how to package your applications with Docker and build, ship, and scale your containers Explore real-world examples of securing and managing Docker containers Who This Book Is For This book is ideal for developers, operations managers, and IT professionals who would like to learn about Docker and use it to build and deploy container-based apps. No prior knowledge of Docker is expected. What You Will Learn Develop containerized applications using the Docker version 17.03 Build Docker images from containers and launch them Develop Docker images and containers leveraging Dockerfiles Use Docker volumes to share data Get to know how data is shared between containers Understand Docker Jenkins integration Gain the power of container orchestration Familiarize yourself with the frequently used commands such as docker exec, docker ps, docker top, and docker stats In Detail Docker is an open source containerization engine that offers a simple and faster way for developing and running software. Docker containers wrap software in a complete filesystem that contains everything it needs to run, enabling any application to be run anywhere – this flexibily and portabily means that you can run apps in the cloud, on virtual machines, or on dedicated servers. This book will give you a tour of the new features of Docker and help you get started with Docker by building and deploying a simple application. It will walk you through the commands required to manage Docker images and containers. You'll be shown how to download new images, run containers, list the containers running on the Docker host, and kill them. You'll learn how to leverage Docker's volumes feature to share data between the Docker host and its containers – this data management feature is also useful for persistent data. This book also covers how to orchestrate containers using Docker compose, debug containers, and secure containers using the AppArmor and SELinux security modules. Style and approach This step-by-step guide will walk you through the features and use of Docker, from Docker software installation to the impenetrable security of containers.



Tcl/Tk in a Nutshell

Author : Paul Raines

Publisher : "O'Reilly Media, Inc."

Page : 458 pages

File Size : 21,6 MB

Release : 1999-03-25

Category : Computers

ISBN : 0596555792

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Book Description

The Tcl language and Tk graphical toolkit are simple and powerful building blocks for custom applications. The Tcl/Tk combination is increasingly popular because it lets you produce sophisticated graphical interfaces with a few easy commands, develop and change scripts quickly, and conveniently tie together existing utilities or programming libraries.One of the attractive features of Tcl/Tk is the wide variety of commands, many offering a wealth of options. Most of the things you'd like to do have been anticipated by the language's creator, John Ousterhout, or one of the developers of Tcl/Tk's many powerful extensions. Thus, you'll find that a command or option probably exists to provide just what you need.And that's why it's valuable to have a quick reference that briefly describes every command and option in the core Tcl/Tk distribution as well as the most popular extensions. Keep this book on your desk as you write scripts, and you'll be able to find almost instantly the particular option you need.Most chapters consist of alphabetical listings. Since Tk and mega-widget packages break down commands by widget, the chapters on these topics are organized by widget along with a section of core commands where appropriate. Contents include: Core Tcl and Tk commands and Tk widgets C interface (prototypes) Expect [incr Tcl] and [incr Tk] Tix TclX BLT Oratcl, SybTcl, and Tclodbc



What's Best Next

Author : Matt Perman

Publisher : Zondervan

Page : 375 pages

File Size : 13,12 MB

Release : 2014-03-04

Category : Religion

ISBN : 0310494230

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Book Description

By anchoring your understanding of productivity in God's plan, What's Best Next gives you a practical approach for increasing your effectiveness in everything you do. There are a lot of myths about productivity--what it means to get things done and how to accomplish work that really matters. In our current era of innovation and information overload, it may feel harder than ever to understand the meaning of work or to have a sense of vocation or calling. So how do you get more of the right things done without confusing mere activity for actual productivity? Matt Perman has spent his career helping people learn how to do work in a gospel-centered and effective way. What's Best Next explains his approach to unlocking productivity and fulfillment in work by showing how faith relates to work, even in our everyday grind. What's Best Next is packed with biblical and theological insight and practical counsel that you can put into practice today, such as: How to create a mission statement for your life that's actually practicable. How to delegate to people in a way that really empowers them. How to overcome time killers like procrastination, interruptions, and multitasking by turning them around and making them work for you. How to process workflow efficiently and get your email inbox to zero every day. How to have peace of mind without needing to have everything under control. How generosity is actually the key to unlocking productivity. This expanded edition includes: a new chapter on productivity in a fallen world a new appendix on being more productive with work that requires creative thinking. Productivity isn't just about getting more things done. It's about getting the right things done--the things that count, make a difference, and move the world forward. You can learn how to do work that matters and how to do it well.