Impetus Technologies Interview Questions, Process, and Tips

Q1. Explain directives
Ans. 
Directives in AngularJS allow you to create custom HTML tags and attributes that extend the functionality of HTML.
• Directives are markers on a DOM element that tell AngularJS to attach a specified behavior to that DOM element.

• They can be used to create reusable components, manipulate the DOM, and add interactivity to an application.

• Examples of directives include ng-model, ng-show, ng-hide, ng-repeat, and custom directiv
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Q1. What is react? What is redux?
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React is a JavaScript library for building user interfaces. Redux is a predictable state container for managing application state.
• React is a front-end library developed by Facebook for building user interfaces.

• React uses a virtual DOM to efficiently update the actual DOM.

• Redux is a state management tool commonly used with React to manage application state.

• Redux stores the entire application state in a single immutable
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Q1. Devops CICD, AWS related questions
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Q1. Kubernetes, Linux, Jenkins
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Q1. Is passible map-reduce have 0 reducer ?
Ans. 
Yes, it is possible to have a MapReduce job with 0 reducers.
• In some cases, the output of the map phase may not require any further processing or aggregation, so having 0 reducers is sufficient.

• For example, if the goal of the MapReduce job is simply to filter out certain data points based on a condition, there may be no need for a reducer.

• Having 0 reducers can also be useful for jobs where the output of the map phase is...read more
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Q2. Write code in spark
Ans. 
Code in Spark for Big Data Engineer Lead interview
• Use SparkSession to create a Spark application

• Read data from a source like HDFS or S3

• Perform transformations and actions on the data using Spark RDDs or DataFrames

• Write the processed data back to a sink like HDFS or S3
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Html5 tags, CSS box model, pseudo selectors in CSS, map v/s forEach, map v/s filter, objects, arrow functions, shallow copy v/s deep copy difference, hoisting, promises

Q1. React Hooks, functional components
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Q2. What are promises? React hooks-based questions like useState, useEffect, useMemo? Asked to create a form in react with various type of inputs
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Q1. Spark archicture and cluster configurations explanation
Ans. 
Spark architecture involves master-slave setup with driver and executor nodes. Cluster configurations include memory allocation, cores allocation, and parallelism settings.
• Spark architecture consists of a master node (driver) and multiple worker nodes (executors)

• Cluster configurations involve setting memory allocation for driver and executors, specifying number of cores per executor, and adjusting parallelism settings

• E...read more
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Q2. Python code, basic to intermediate
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Q3. Sql question basic to intermediate
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Q1. Cluster conf and scenerio based question
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Q2. Sql and python scenerio based questions
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