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Top 200 Data Engineer Interview Questions And Answers

Author: Knowledge Powerhouse
Publisher:
ISBN: 9781520879833
Size: 72.48 MB
Format: PDF, Docs
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Top 200 Data Engineer Interview Questions Big Data and Data Science are the most popular technology trends. There is a growing demand for Data Engineer job in technology companies. This book contains technical interview questions that an interviewer asks for Data Engineer position. Each question is accompanied with an answer so that you can prepare for job interview in short time. The book contains questions on Apache Hadoop, Hive, Spark, SQL and MySQL. It is a combination of our five other books. We have compiled this list after attending dozens of technical interviews in top-notch companies like- Airbnb, Netflix, Amazon etc.Often, these questions and concepts are used in our daily work. But these are most helpful when an Interviewer is trying to test your deep knowledge of Big Data topics like- Hadoop, Hive, Spark, SQL, MySQL etc. What are the Big Data topics covered in this book? We cover a wide variety of Big Data and Data Science topics in this book. Some of the topics are Apache Hadoop, Hive, Spark, SQL, MySql etc. How will this book help me? By reading this book, you do not have to spend time searching the Internet for Data Engineer interview questions. We have already compiled the list of the most popular and the latest Data Engineer 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 a Data Engineer position. What is the level of questions in this book? This book contains questions that are good for a beginner Data engineer to a senior Data engineer. The difficulty level of question varies in the book from Fresher to a Seasoned professional. What are the sample questions in this book? What is the difference between ROLLBACK TO SAVEPOINT and RELEASE SAVEPOINT? How will you see the current user logged into MySQL connection? Can we create multiple tables in Hive for a data file? Can we use Hive for Online Transaction Processing (OLTP) systems? Can we use same name for a TABLE and VIEW in Hive? How can we get a random number between 1 and 100 in MySQL? How can you copy the structure of a table into another table without copying the data? How can you find 10 employees with Odd number as Employee ID? How does CONCAT function work in Hive? How will you change the data type of a column in Hive? How will you check if a file exists in HDFS? How will you check if a table exists in MySQL? How will you run Unix commands from Hive? How will you search for a String in MySQL column? How will you see the structure of a table in MySQL? How will you select the storage level in Apache Spark? How will you synchronize the changes made to a file in Distributed Cache in Hadoop? If we set Replication factor 3 for a file, does it mean any computation will also take place 3 times? Is it safe to use ROWID to locate a record in Oracle SQL queries? What are different Persistence levels in Apache Spark? What are the common Transformations in Apache Spark? http://www.knowledgepowerhouse.com

Top 200 Operations Engineer Interview Questions And Answers

Author: Knowledge Powerhouse
Publisher:
ISBN: 9781520881478
Size: 61.33 MB
Format: PDF, Docs
View: 2850
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Top 200 Operations Engineer Interview Questions Operations Engineer is an important technology job. There is a growing demand for Operations Engineer job with knowledge of Unix, Python, Maven, GIT etc in technology companies. This book contains popular technical interview questions that an interviewer asks for Operations Engineer position. The questions cover Python, Unix, GIT and Maven areas. It is a combination of our four other books. We have compiled this list after attending dozens of technical interviews in top-notch companies like- Airbnb, Netflix, Amazon etc.Often, these questions and concepts are used in our daily work. But these are most helpful when an Interviewer is trying to test your deep knowledge of Operations topics like- Python, Unix, Maven, GIT etc. What are the Operations topics covered in this book? We cover a wide variety of Operations topics in this book. Some of the topics are Unix, Python, Maven, GIT etc. How will this book help me? By reading this book, you do not have to spend time searching the Internet for Operations Engineer interview questions. We have already compiled the list of the most popular and the latest Operations Engineer 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 a Operations Engineer position. What is the level of questions in this book? This book contains questions that are good for a beginner Operations engineer to a senior Operations engineer. The difficulty level of question varies in the book from Fresher to a Seasoned professional. What are the sample questions in this book? Can anyone upload JARS or artifacts to Central Repository? Can we create our own directory structure for a project in Maven? GIT is written in which language? How are arguments passed in a Python method? By value or by reference? How can we create a dictionary with ordered set of keys in Python? How can we do Functional programming in Python? How can we exclude a dependency in Maven? How can we get the debug or error messages from the execution of Maven? How can we know if a branch is already merged into master in GIT? How can we resolve a merge conflict in GIT? How can we retrieve data from a MySQL database in a Python script? How can we run a process in background in Unix? How can we kill a process running in background? How can we see n most recent commits in GIT? How can we see the configuration settings of GIT installation? How can we skip the running of tests in Maven? How can you redirect I/O in Unix? How do you perform unit testing for Python code? How do you profile a Python script? How does alias work in Unix? How does memory management work in Python? How many heads can you create in a GIT repository? How Maven searches for JAR corresponding to a dependency? How will you add a new feature to the main branch? How will you check if a remote host is still alive? How will you check in Python, if a class is subclass of another class? How will you check the information about a process in Unix? http://www.knowledgepowerhouse.com

Top 50 Apache Spark Interview Questions And Answers

Author: Knowledge Powerhouse
Publisher:
ISBN: 9781520870540
Size: 48.48 MB
Format: PDF, ePub
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Introduction: Top 50 Apache Spark Interview Questions & Answers Apache Spark is a highly popular trend in technology world. There is a growing demand for Data Engineer jobs with Apache Spark knowledge in IT Industry. This book contains technical interview questions that an interviewer asks for Apache Spark. 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- Amazon, Netflix, Uber etc.Often, these questions and concepts are used in our daily work. There is a sample answer with each question. But try to answer these questions in your own words.After going through this book 2-3 times, you will be well prepared to face interview of Apache Spark topic for Data Engineer position. How will this book help me? By reading this book, you do not have to spend time searching the Internet for Apache Spark Data Engineer interview questions. We have already compiled the list of most popular and latest Apache Spark Data Engineer 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 try to go through the difficult questions. After going through this book 2-3 times, you will be well prepared to face Apache Spark Data Engineer interview in IT. What is the level of questions in this book? This book contains questions that are good for Software Engineer, Senior Software Engineer, Principal Engineer and Associate Architect level. What are the sample questions in this book? How will you minimize data transfer while working with Apache Spark? How does Spark Streaming work internally? What are the main features of Apache Spark? What is a Resilient Distribution Dataset in Apache Spark? What is a Transformation in Apache Spark? What are security options in Apache Spark? What are the two ways to create RDD in Spark? What are the main operations that can be done on a RDD in Apache Spark? What is a Shuffle operation in Spark? What are the operations that can cause a shuffle in Spark? What is purpose of Spark SQL? What is a DataFrame in Spark SQL? What is a Parquet file in Spark? What is the difference between Apache Spark and Apache Hadoop MapReduce? What are the main languages supported by Apache Spark? What is the use of SparkContext in Apache Spark? Do we need HDFS for running Spark application? What is Spark Streaming? What is a Pipeline in Apache Spark? How does Pipeline work in Apache Spark? What is the difference between Transformer and Estimator in Apache Spark? What are the different types of Cluster Managers in Apache Spark? What is the main use of MLib in Apache Spark? What is the Checkpointing in Apache Spark? What is an Accumulator in Apache Spark? What is a Broadcast variable in Apache Spark? What is Structured Streaming in Apache Spark? What is a Property Graph? What is Neighborhood Aggregation in Spark? What are different Persistence levels in Apache Spark? How will you select the storage level in Apache Spark? What are the options in Spark to create a Graph? What are the basic Graph operators in Spark? What is the partitioning approach used in GraphX of Apache Spark? http://www.knowledgepowerhouse.com

Ace The Programming Interview

Author: Edward Guiness
Publisher: John Wiley & Sons
ISBN: 1118757963
Size: 53.96 MB
Format: PDF, ePub
View: 1660
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Be prepared to answer the most relevant interview questions and land the job Programmers are in demand, but to land the job, you must demonstrate knowledge of those things expected by today's employers. This guide sets you up for success. Not only does it provide 160 of the most commonly asked interview questions and model answers, but it also offers insight into the context and motivation of hiring managers in today's marketplace. Written by a veteran hiring manager, this book is a comprehensive guide for experienced and first-time programmers alike. Provides insight into what drives the recruitment process and how hiring managers think Covers both practical knowledge and recommendations for handling the interview process Features 160 actual interview questions, including some related to code samples that are available for download on a companion website Includes information on landing an interview, preparing a cheat-sheet for a phone interview, how to demonstrate your programming wisdom, and more Ace the Programming Interview, like the earlier Wiley bestseller Programming Interviews Exposed, helps you approach the job interview with the confidence that comes from being prepared.

Sql Server Interview Questions And Answers

Author: Pinal Dave
Publisher:
ISBN: 9780985226855
Size: 76.78 MB
Format: PDF
View: 3388
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This book will flow in a "Question & Answer" mode from start to finish to help you grasp concepts faster and get to the point quickly. Once you understand the concepts, it gets easier to see twists using that concept within a scenario and to ultimately solve them. Though each of these chapters are geared towards convenience we highly recommend reading each of the sections irrespective of the roles you might be doing since each of the sections have some interesting trivia about working with SQL Server. In the industry the role of accidental DBA's (especially with SQL Server) is very common. Hence if you have performed the role of DBA for a short stint and want to brush-up your fundamentals then the upcoming sections will be a great review.

Top 50 Sql Tricky Interview Questions

Author: Knowledge Powerhouse
Publisher:
ISBN: 9781520101392
Size: 49.66 MB
Format: PDF, ePub
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This book contains tricky and nasty SQL interview questions that an interviewer asks. It is a compilation of advanced SQL interview questions after attending dozens of technical interviews in top-notch companies like- Oracle, Google, Ebay, Amazon etc.Each question is accompanied with an answer because you want to save your time while preparing for an interview.The difficulty rating on these Questions varies from a Junior level programmer to Architect level. Sample Questions are:How can we retrieve alternate records from a table in Oracle?Given a list of student names and grade. Write a query to print a comma separated list of student names in a grade.Write SQL Query to get Student Name and number of Students in same grade.Write SQL query to delete duplicate rows in a table?Write SQL query to get the second highest salary among all Employees?Write SQL Query to get Employee Name, Manager ID and number of employees in the department?Write SQL query to get the nth highest salary among all Employees.Given an Employee table with Manager_ID as column, print First name, Manager ID and Level of employees in Organization Structure?Why is the difference between NVL and NVL2 functions in SQL?What is the difference between UNION and UNION ALL?What are the reasons for de-normalizing the data?What is a Pseudocolumn?How can you find 10 employees with Odd number as Employee ID?What is the difference between DELETE and TRUNCATE in SQL?Which SQL feature can be used to view data in a table sequentially?What are the differences between CASE and DECODE in SQL?Write a SQL Query to get the Quarter from date.http://www.knowledgepowerhouse.com

Top 200 Devops Engineer Interview Questions And Answers

Author: Knowledge Powerhouse
Publisher:
ISBN: 9781520874500
Size: 63.79 MB
Format: PDF, Mobi
View: 2445
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Top 200 DevOps Engineer Interview Questions DevOps is one of the most popular technology trends. There is a growing demand for DevOps Engineer job in technology companies. This book contains technical interview questions that an interviewer asks for DevOps Engineer position. Each question is accompanied with an answer so that you can prepare for job interview in short time. The book contains questions on DevOps, Docker, Unix and Cloud Computing. It is a combination of our four other books. We have compiled this list after attending dozens of technical interviews in top-notch companies like- Airbnb, Netflix, Amazon etc.Often, these questions and concepts are used in our daily work. But these are most helpful when an Interviewer is trying to test your deep knowledge of DevOps topics like- Jenkins, Docker, Unix, Cloud Computing etc. What are the DevOps topics covered in this book? We cover a wide variety of DevOps topics in this book. Some of the topics are Docker, AWS OpsWorks Stacks, CloudFormation, Ansible, Jenkins, Nagios, Kubernetes, Docker, Unix, Cloud Computing etc. How will this book help me? By reading this book, you do not have to spend time searching the Internet for DevOps interview questions. We have already compiled the list of the most popular and the latest DevOps 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 a DevOps Engineer position. What is the level of questions in this book? This book contains questions that are good for a beginner DevOps engineer to a senior DevOps engineer. The difficulty level of question varies in the book from Fresher to a Seasoned professional. What are the sample questions in this book? What are the popular DevOps tools that you use? What are the main features of AWS OpsWorks Stacks? How does CloudFormation work in AWS? What is CICD in DevOps? What are the benefits of Continuous Integration (CI)? What is the architecture of Chef? What are the main use cases of Ansible? What is Docker Hub? What is Multi-factor authentication? What is State Stalking in Nagios? What is the architecture of Puppet? What is the use of Kubernetes? What is the architecture of Kubernetes? 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 are the features of Docker Swarm? What is a Docker Image? 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? 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 is a Passive check in Nagios? What are the common use cases of Docker? Is there a video course available for this book? We have made a video course based on AWS Interview Preparation book on Udemy. It is very well appreciated by professionals. https://www.udemy.com/course/1127286 http://www.knowledgepowerhouse.com

Top 50 Devops Engineer Interview Questions And Answers

Author: Knowledge Powerhouse
Publisher:
ISBN: 9781520491066
Size: 46.15 MB
Format: PDF, ePub
View: 3899
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Introduction: DevOps Interview Questions DevOps is one of the most popular technology trends. There is a growing demand for DevOps Engineer job in technology companies. This book contains technical interview questions that an interviewer asks for DevOps Engineer position. 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- Airbnb, Netflix, Amazon etc.Often, these questions and concepts are used in our daily work. But these are most helpful when an Interviewer is trying to test your deep knowledge of DevOps. What are the DevOps topics covered in this book? We cover a wide variety of DevOps topics in this book. Some of the topics are Docker, AWS OpsWorks Stacks, CloudFormation, Ansible, Jenkins, Nagios, Kubernetes etc. How will this book help me? By reading this book, you do not have to spend time searching the Internet for DevOps interview questions. We have already compiled the list of the most popular and the latest DevOps 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 a DevOps Engineer position. What is the level of questions in this book? This book contains questions that are good for a beginner DevOps engineer to a senior DevOps engineer. The difficulty level of question varies in the book from Fresher to a Seasoned professional. What are the sample questions in this book? What are the popular DevOps tools that you use? What are the main benefits of DevOps? What is the typical DevOps workflow you use in your organization? How do you take DevOps approach with Amazon Web Services? How will you run a script automatically when a developer commits a change into GIT? What are the main features of AWS OpsWorks Stacks? How does CloudFormation work in AWS? What is CICD in DevOps? What are the best practices of Continuous Integration (CI)? What are the benefits of Continuous Integration (CI)? What are the options for security in Jenkins? What are the main benefits of Chef? What is the architecture of Chef? What are the main use cases of Ansible? What is Docker Hub? What is your favorite scripting language for DevOps? What is Multi-factor authentication? What is State Stalking in Nagios? What are the main features of Nagios? What is the architecture of Puppet? What is the use of Kubernetes? What is the architecture of Kubernetes? How does Kubernetes provide high availability of applications in a Cluster? What is Chaos Monkey in DevOps? How do you perform Test Automation in DevOps? What is a Deployment Pipeline? What are the main features of Docker Hub? What are the security benefits of using Container based system? What is a Passive check in Nagios? What is a Docker container? What are the common use cases of Docker? Can we lose our data when a Docker Container exits? http://www.knowledgepowerhouse.com

101 Job Interview Questions You Ll Never Fear Again

Author: James Reed
Publisher: Penguin
ISBN: 0143129236
Size: 21.30 MB
Format: PDF, ePub
View: 7682
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“An insider's guide to the perfect interview.” —Daily Express What are job interviewers actually looking for in a candidate? What questions will they ask? What does each question really mean? What are the answers that will secure you the job? James Reed, chairman of one of the world’s largest recruiting agencies, takes you into the minds of top interviewers and reveals the answers that will land your dream job. 101 Job Interview Questions You'll Never Fear Again provides the best strategies for dealing with everything from classic questions like "Tell me about yourself" and "What are your greatest weaknesses?" to puzzlers like "Sell me this pen" and "How many traffic lights are there in New York?" You’ll learn: · The “Fateful 15” questions that form the basis of nearly every question you’ll be asked. · The 101 most common questions and what the interviewer is really asking. · Top line tactics for formulating winning answers about your career goals, character, competency, and creativity. · How to identify the types of interviewers and adapt accordingly. · How to adopt the right mindset, dress code, and approach to stand out from the pack. “Gives you the answers they really want. Great as interview preparation.” —The Sun “Takes much of the fear out of preparing for a job interview.” —Sunday Post “Well-written and well-organized. Strongly recommended for anyone preparing for a job interview.” —Library Journal