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Introduction: Top 50 Microservices Interview Questions & AnswersUpdated: 2020 versionLatest Architecture: Microservices is the latest trend in Technology world. It is the new architecture on which very few books have been written. If you are aiming to get a job in companies with Microservices architecture like- Netflix, Amazon etc. then this book can help you prepare for the technical interview.Q & A Format: This books also covers Architect level information in Q&A format for easy grasp of the concept. This book helps you in understanding the deep concepts behind Microservices in a Q&A format. It is an important topic for a software developer to know about Microservices. Great Compilation: It is a compilation of advanced Microservices interview questions after attending dozens of technical interviews in top-notch companies like- Facebook, Google, Ebay, Amazon etc. Each question is accompanied with an answer so that you can prepare for job interview in short time. Practical Purpose: 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 Microservices concepts. How will this book help me?By reading this book, you do not have to spend time searching the Internet for Microservices interview questions. We have already compiled the list of the most popular and the latest Microservices Interview questions. Are there answers in this book?Yes, in this book each question is followed by an answer. So you can save time in interview preparation. What is the best way of reading this book?You have to first do a slow reading of all the questions in this book. 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 in Microservices architecture. What is the level of questions in this book?This book contains questions that are good for a Associate Software engineer to an Architect level. The difficulty level of question varies in the book from a Fresher to an Experienced professional. What are the sample questions in this book? What are the characteristics of a Good Microservice? Is it a good idea for Microservices to share a common database? What are the issues in using REST over HTTP for Microservices? What is Reactive Extensions? What is Semantic Versioning? What is Continuous Integration? What is Ubiquitous language? What is Mike Cohn's Test Pyramid? How can we eradicate non-determinism in tests? What is PACT? What is a Consumer Driven Contract (CDC)? What is Canary Releasing? How can we separate Deployment from Release of Microservices? How will you implement Service Discovery in Microservices architecture? What is the difference between Orchestration and Choreography in Microservices architecture?
This book contains basic to expert level MySQL 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 MySQL.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 MySQL for an experienced programmer. Some of the questions are:How will you calculate the number of days between two dates in MySQL?What are the different types of Triggers in MySQL?What are the differences between Heap table and temporary table in MySQL?What is a Heap table in MySQL?What is the difference between BLOB and TEXT data type in MySQL?What will happen when AUTO_INVREMENT on an INTEGER column reaches MAX_VALUE in MySQL?What are the advantages of MySQL as compared with Oracle DB?What are the disadvantages of MySQL?What is the difference between CHAR and VARCHAR datatype in MySQL?What is the use of 'i_am_a_dummy flag' in MySQL?How can we get current date and time in MySQL?What is the difference between timestamp in Unix and MySQL?How will you limit a MySQL query to display only top 10 rows?What is automatic initialization and updating for TIMESTAMP in a MySQL table?How can we get the list of all the indexes on a table?What is SAVEPOINT in MySQL?17. What is the difference between ROLLBACK TO SAVEPOINT and RELEASE SAVEPOINT?How will you search for a String in MySQL column?How can we find the version of the MySQL server and the name of the current database by SELECT query?What is the use of IFNULL() operator in MySQL?How will you check if a table exists in MySQL?How will you see the structure of a table in MySQL?What are the objects that can be created by CREATE statement in MySQL?24. How will you see the current user logged into MySQL connection?How can you copy the structure of a table into another table without copying the data?What is the difference between Batch and Interactive modes of MySQL?How can we get a random number between 1 and 100 in MySQL?What is the difference between Primary key and Candidate key?What is a Federated table in MySQL?How will you get the comma separated values for a column in a MySQL Group query?How can we get the results from a table in a random order in MySQL?How can we prevent duplicate records in a MySQL table?How will you eliminate duplicate values from a query result in MySQL?How will you get the size of data in a MySQL table?What is the option in Amazon Web Services for MySQL?How can we manage multiple MySQL servers?How will you migrate your SQL Server database to MySQL?What is the difference between MySQL and Oracle?What is the order of privileges in MySQL?Is it ok to mention a table name in lower case while creation and in uppercase while retrieving data from MySQL DB?Why this query does not work in MySQL?What is mysqldump?What is the limitation of mysqldump?Can we run Javascript or Python code in MySQL?What are user-defined variables in MySQL?How will you optimize a SELECT query in MySQL?What are the different optimization techniques in MySQL?How can we optimize INSERT query in MySQL?How will you make MySQL system secure against attackers?How can you protect your MySQL server against Denial of Service attacks?
Top 50 Operating System Interview Questions This book contains Operating System interview questions that an interviewer asks. It is a compilation of easy to advanced Operating System interview questions after attending dozens of technical interviews in top-notch companies like- Oracle, Cisco, IBM, etc. Each question is accompanied with an answer so that you can prepare for job interview in short time. 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 Operating System concepts. How will this book help me? By reading this book, you do not have to spend time searching the Internet for Operating System interview questions. We have already compiled the list of the most popular and the latest Operating System Interview questions. Are there answers in this book? Yes, in this book each question is followed by an answer. So you can save time in interview preparation. What is the best way of reading this book? You have to first do a slow reading of all the questions in this book. 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 for Software Engineer position in Operating System. What is the level of questions in this book? This book contains questions that are good for a Associate Software engineer to a Principal Software engineer. The difficulty level of question varies in the book from a Fresher to an Experienced professional. What are the sample questions in this book? What is a Real time system? What is Virtual memory in OS? What is multi processing in OS? What is a Time sharing system? What is a Thread in OS? What are the advantages of multi-threaded programming? What is FCFS in OS? What is Round Robin scheduling algorithm in OS? What is a Deadlock in OS? What are the necessary conditions for Deadlock to occur? What is Banker
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
Amazon Web Services is the hottest technology in software. It is the new architecture on which very few books have been written. If you are aiming to get a job in companies with AWS based architecture like- Netflix, Amazon etc. then this book can help you prepare for the technical interview.This books also covers Architect level information in Q&A format for easy grasp of the concept.This book helps you in understanding the deep concepts behind AWS in a Q&A format.We keep revising this book from time to time to keep it up to date with the latest changes in Amazon Web Services (AWS) world.Sample Questions are:How can you failover gracefully in AWS?What is the use of Availability Zones in AWS?Why AWS systems are built on "Design to Fail" approach?What are the best practices to build a resilient system in AWS?What are the tools in AWS that can be used for creating a system based on "Design to Fail" principle?How can we build a Scalable system in AWS?What are the advantages of messaging queues to decouple components?How can we implement Message Queue based system in AWS?What are the different ways to implement Elasticity in AWS?What are the benefits of bootstrapping instances in AWS?What are the best practices to Automate deployment in AWS?How will you automate your software infrastructure in AWS?What are the AWS specific techniques for parallelization of software work?Why it is recommended to keep dynamic data closer to the compute and static data closer to the end user in Cloud computing?What are the features in AWS for keeping static data closer to end user?What are the best practices to ensure the security of an application in cloud?Why encryption should be used in Amazon S3?What are the best practices of Software Security in Cloud?What is the difference between Stop and Terminate an Amazon EC2 instance?What are the main uses of Amazon Elastic Compute Cloud (EC2)?What is Auto-scaling? How does Auto-scaling work in AWS?What automation tools can be used to create new servers in AWS?How is Amazon Machine Image (AMI) and an Amazon Instance are related?What key components of Amazon Web Service (AWS) do you use in your project?
Gold mine of microservices interview Questions & Answers for aspirants and domain experts. DESCRIPTION An SME typically attends several interviews and discussions for jobs or projects during his or her career. There is always a dire need to look up and read multiple books and references before these interviews/discussions so that you stay on top of things. This book will assist software engineers, programmer analysts, designers, consultants, technical, and solution, domain, and enterprise architects to perform well in microservices interview discussions and to launch a successful career. This book also tackles the NFR domain, which is the key aspect to be addressed while creating microservices applications. This book will also assist SMEs to become competent in their respective areas. Usually, it takes a good amount of time to understand the core concepts, fundamentals, patterns, and principles but this book is a gold mine of topics that are typically discussed during a microservices interview. The book is an honest attempt to share with practitioners, SMEs, and aspirants my experiences, learning, insights and proven methodologies that will benefit them in the long run. Interviewers will also be able to leverage this book to make sure they hire candidates with the right competencies depending on the job requirements. The primary audiences for this title are the gamut of roles starting from IT consultants, Programmer Analysts, Software Engineers, Solution Architects, and Interview Panelists who support strategic and tactical engagements for Fortune 100 customers worldwide. This title is for SMEs with background and competencies in architecture, design, and development of microservices-based applications and people who would like to gain advanced and next-level skills. The book provides a comprehensive approach for preparing for job interviews. It covers all key domains including, Core & Advance Concepts, Patterns, Frameworks & Tools, and DevOps. KEY FEATURES ● More than 200 questions in 5 domains including a chapter on patterns, practices, and NFRs. ● Extended coverage from architecture, design, development to NFRs domains. ● The book can be selectively read based on the relevant domains. ● Extensive coverage in terms of depth and breadth of domains. ● The title has more than 50 diagrams depicting various scenarios, models, and methodologies. WHAT WILL YOU LEARN ● Concepts, principles, and guidelines for various domains for the microservices ecosystem. ● This book presents an exhaustive question bank with special emphasis on practical scenarios and business cases. ● Based on our experience, we assure that at least 80% of the contents will be discussed during a typical interview. ● Common pitfalls to be avoided and patterns to leverage ● Frameworks, methodologies, and design approach leveraged for microservices topologies ● Design guidelines used for architecting microservices applications & systems ● Provides a holistic view of key concepts, design principles, and patterns related to evangelizing microservices applications ● Leverage the book as a reference guide for adopting best practices, standards, and design guidelines ● Extensive coverage in terms of depth and breadth of domains. The book can also be read selectively as per the choice of domain. ● This book has more than two hundred questions in five domains and around 50 depictions. WHO THIS BOOK IS FOR This books is for Enterprise Architects, Solution Architects, and Technical Architects/Designers, Project Managers, Programmer Analysts and Software Engineers, Students and Interview Panelists TABLE OF CONTENTS 1. Introduction 2. Core Concepts 3. Advance Concepts 4. Patterns, Practices and NFRs 5. Tools and Frameworks 6. DevOps
Introduction: Java 8 Interview Questions Updated 2018 version!! Java 8 is one of the major release from Java with features like Streams, Lambdas etc. A lot of companies are looking for a software developers proficient in Java 8 features. This book contains basic to expert level Java 8 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 Java 8 features. How will this book help me? By reading this book, you do not have to spend time searching the Internet for Python interview questions. We have already compiled the list of the most popular and the latest Java 8 Interview questions. Are there answers in this book? Yes, in this book each question is followed by an answer. So you can save time in interview preparation. What is the best way of reading this book? You have to first do a slow reading of all the questions in this book. 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 for Software Engineer position in Java 8 version. What is the level of questions in this book? This book contains questions that are good for a Associate Software engineer to a Senior Software engineer. The difficulty level of question varies in the book from a Fresher to an Experienced professional. What are the sample questions in this book? How does Internal Iteration work in Java 8? Can we provide implementation of a method in a Java Interface? What are the main differences between an interface with default method and an abstract class in Java 8? Is it mandatory to use @FunctionalInterface annotation to define a Functional interface in Java 8? How can we get duration between two dates or time in Java 8? What is the new method family introduced in Java 8 for processing of Arrays on multi core machines? What are the differences between Collection and Stream API in Java 8? What are the new features released in Java 8? What are the main benefits of new features introduced in Java 8? What is a Lambda expression in Java 8? What are the three main parts of a Lambda expression in Java? What is the data type of a Lambda expression? Why did Oracle release a new version of Java like Java 8? What are the advantages of a lambda expression? What is a Functional interface in Java 8? What is a Single Abstract Method (SAM) interface in Java 8? How can we define a Functional interface in Java 8? Why do we need Functional interface in Java? What are the main uses of Stream API in Java 8? What are the differences between Iterator and Spliterator in Java 8? How can we get current time by using Date/Time API of Java 8? What is Type Inference in Java 8? Does Java 7 support Type Inference? What are the main differences between Internal and External Iterator? What are the main advantages of Internal Iterator over External Iterator in Java 8? What are the applications in which we should use Internal Iteration? http://www.knowledgepowerhouse.com
This ebook discusses 100 plus real problems and their solutions for microservices architecture based on Spring Boot, Spring Cloud, Cloud Native Applications. It covers core concepts of microservices architecture, various design patterns, interview questions & answers, security in microservices, testing strategies and best practices in distributed system design. Table of Contents: 1. Core concepts related Spring powered microservices architecture 2. Introduction to Spring Boot, Spring Cloud, Cloud Native Applications, Netflix OSS 3. Design Patterns in microservices architecture - API Gateway, Hystrix, etc. 4. 100 plus Interview Questions 5. Security - OAuth2 and JWT 6. Testing Strategies in microservices architecture 7. Best Practices and common pitfalls
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Explore a wide variety of popular interview questions and learn various techniques for breaking down tricky bits of code and algorithms into manageable chunks Key FeaturesDiscover over 200 coding interview problems and their solutions to help you secure a job as a Java developerWork on overcoming coding challenges faced in a wide array of topics such as time complexity, OOP, and recursionGet to grips with the nuances of writing good code with the help of step-by-step coding solutionsBook Description Java is one of the most sought-after programming languages in the job market, but cracking the coding interview in this challenging economy might not be easy. This comprehensive guide will help you to tackle various challenges faced in a coding job interview and avoid common interview mistakes, and will ultimately guide you toward landing your job as a Java developer. This book contains two crucial elements of coding interviews - a brief section that will take you through non-technical interview questions, while the more comprehensive part covers over 200 coding interview problems along with their hands-on solutions. This book will help you to develop skills in data structures and algorithms, which technical interviewers look for in a candidate, by solving various problems based on these topics covering a wide range of concepts such as arrays, strings, maps, linked lists, sorting, and searching. You'll find out how to approach a coding interview problem in a structured way that produces faster results. Toward the final chapters, you'll learn to solve tricky questions about concurrency, functional programming, and system scalability. By the end of this book, you'll have learned how to solve Java coding problems commonly used in interviews, and will have developed the confidence to secure your Java-centric dream job. What you will learnSolve the most popular Java coding problems efficientlyTackle challenging algorithms that will help you develop robust and fast logicPractice answering commonly asked non-technical interview questions that can make the difference between a pass and a failGet an overall picture of prospective employers' expectations from a Java developerSolve various concurrent programming, functional programming, and unit testing problemsWho this book is for This book is for students, programmers, and employees who want to be invited to and pass interviews given by top companies. The book assumes high school mathematics and basic programming knowledge.