Rigel Networks Senior NOC Engineer Interview Questions and Answers

Q1. Interview based on your programming language , how good you know like java or python or scala
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Q2. Big data & Data science interview question like working of spark , Hive optimization of queries , what is graphx
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Q3. Explain your recent project in detail
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Q1. More deep dive in your expertise technologies like Spark DAG working explain
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Q2. How you do data validation in hive
Ans. 
Data validation in Hive involves using built-in functions and custom scripts to ensure data accuracy and consistency.
• Use built-in functions like IS NULL, IS NOT NULL, and COALESCE to check for missing or null values

• Use regular expressions and pattern matching to validate data formats

• Write custom scripts to perform more complex data validation tasks

• Perform data profiling to identify potential data quality issues

• Use data...read more
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Q1. Salary , why changing job etc..
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Q2. Your complete background of career
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Q1. Business Strategy
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Q2. Client Relationship
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Coding test are just basic Array and linkedList question

Q1. Explain 4 pillar of oops
Ans. 
The 4 pillars of OOP are Inheritance, Encapsulation, Abstraction, and Polymorphism.
• Inheritance allows a class to inherit properties and behavior from another class.

• Encapsulation restricts access to certain components of an object, protecting its integrity.

• Abstraction hides complex implementation details and only shows the necessary features.

• Polymorphism allows objects of different classes to be treated as objects of a
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Q2. Internal working of Hashmap
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HashMap is a data structure that stores key-value pairs and uses hashing to quickly retrieve values based on keys.
• HashMap internally uses an array of linked lists to store key-value pairs.

• When a key-value pair is added, the key is hashed to determine the index in the array where it will be stored.

• If multiple keys hash to the same index, a linked list is used to handle collisions.

• Retrieving a value involves hashing the ...read more
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Q3. Crud operation implementation
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Implementation of Create, Read, Update, and Delete operations in a software system.
• Use SQL queries for database operations

• Create separate functions for each operation

• Handle errors and exceptions properly

• Test thoroughly to ensure functionality

• Consider security measures to prevent unauthorized access
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Q1. Why are you chaning the organisation?
Ans. 
Seeking new challenges and opportunities for growth.
• Looking for a new environment to learn and develop new skills

• Interested in working on different projects and technologies

• Seeking better career advancement opportunities

• Wanting to work in a more collaborative team environment
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Q1. Brief explanation on our resume
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Q1. Finance background questions
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Q2. Basic Journal entries
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Q1. Final level discussion
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Q1. Previous year experience
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Q1. Type of value added to the company
Ans. 
I add value to the company by leveraging my skills and experience to drive growth, improve efficiency, and enhance overall performance.
• Implementing cost-saving initiatives

• Developing innovative solutions to challenges

• Improving processes and workflows

• Increasing revenue through strategic partnerships

• Enhancing customer satisfaction and retention
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Q1. Tell about my self and experience
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Q1. Telling about myself and my experience with my manager
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I was asked t solve 2 coding questions got 20 minutes for each, both were on DS and Algo moderate problems. 1 on trees and second on linked list.

Q1. System design round where i was asked to design a parking lot followed by few DB questions
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Q1. Then there was a UI round where i had to answer few Typescript questions and then was given a case study which i had t solve and propose a UI/UX solution.
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Q1. Current time and their angles
Ans. 
The question is asking for the current time and the angles formed by the hour and minute hands on a clock.
• The angle between the hour and minute hands of a clock can be calculated using the formula: angle = |(30*hour - (11/2)*minutes)|

• At 3:00, the angle between the hour and minute hands is 90 degrees.

• At 6:00, the angle between the hour and minute hands is 180 degrees.

• At 9:00, the angle between the hour and minute hands
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Q1. Didnt qual here btw
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Q1. Didnt qual either btw
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