Accurate Background Senior Software Engineer Interview Questions and Answers

Q1. How event loop works
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Event loop is a mechanism that allows for efficient handling of multiple events in a single thread.
• Event loop is used in asynchronous programming to handle non-blocking I/O operations.

• It continuously checks for events in a queue and executes their associated callbacks.

• Event loop is commonly used in JavaScript for handling browser events and Node.js for handling server requests.

• It prevents blocking of the main thread by...read more
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Q2. Polyfill of promise.all
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Q3. Polyfill of bind
Ans. 
Polyfill of bind is a function that allows you to bind a specific context to a function.
• The bind polyfill can be implemented using the apply method.

• It returns a new function with the specified context bound to it.

• The polyfill can also accept additional arguments that will be passed to the original function.

• Here's an example of a bind polyfill implementation:

• ```javascript if (!Function.prototype.bind) { Function.proto...read more
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Q1. IBM storage replication
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Q2. Dell EMC storage
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Q1. Talked about CTC
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Q2. Talked about notice period
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Write word count program

Q1. Architecture of Spark
Ans. 
Spark is a distributed computing framework that provides in-memory processing capabilities for big data analytics.
• Spark has a master-slave architecture with a central coordinator called the Spark Master and distributed workers called Spark Workers.

• It uses Resilient Distributed Datasets (RDDs) for fault-tolerant distributed data processing.

• Spark supports various programming languages like Scala, Java, Python, and R for ...read more
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Q2. What is AWS Glue job
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AWS Glue job is a serverless ETL service that makes it easy to prepare and load data for analytics.
• AWS Glue job is used for extracting, transforming, and loading data from various sources into data lakes or data warehouses.

• It allows users to create and run ETL jobs in a fully managed serverless environment.

• AWS Glue job supports various data formats and integrates with other AWS services like S3, Redshift, and RDS.

• Users...read more
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Q1. Basic overall skill verification
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Q1. Tell me about yourself.
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Q1. Abot hays
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Q2. Not yet
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