PSK Infrastructures Senior Engineer Interview Questions and Answers

Q1. About salary and experience
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Q1. Chiller trouble shooting
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Q2. Work of cchiller
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A chiller is a machine that removes heat from a liquid via a vapor-compression or absorption refrigeration cycle.
• Chillers are commonly used in air conditioning systems to cool buildings or industrial processes.

• They work by transferring heat from the liquid being chilled to a separate fluid, which is then circulated through a heat exchanger to cool it down.

• Chillers can be water-cooled or air-cooled, depending on the app
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Q3. Alarm and solutions
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Q4. Controlling andetc
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Salary and job responsibilities

Hacker Rank test with medium difficulty

Q1. Technical discussion mainly around system design, different architectures, problem solving and coding question may be asked.
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A case study for a problem statement

Q1. Do you have working experience of SwiftUI
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Q2. Have you ever implemented or worked with server driven UIs
Ans. 
Yes, I have experience implementing server driven UIs.
• Implemented server driven UIs using JSON responses to dynamically update UI elements

• Worked with frameworks like React and Angular to handle server driven UI updates

• Used server driven UIs to efficiently manage and display large amounts of data
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Q1. What is closure and types?
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Closure is a function that captures variables from its surrounding scope, allowing it to access those variables even after the scope has closed.
• Closure allows a function to access variables from its lexical scope even after the function has finished executing.

• Types of closures include lexical closures, which capture variables from the surrounding lexical scope, and function closures, which capture variables from the fu...read more
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Q2. What is Core data and all operations with example/scenarios
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Core Data is a framework provided by Apple for managing the model layer objects in an iOS application.
• Core Data is used for storing, retrieving, and managing data in an iOS app.

• It provides an object-oriented interface to work with data.

• Operations include creating, reading, updating, and deleting data.

• Example: Creating a new record in Core Data for a user profile.

• Example: Fetching a list of items from Core Data to displ
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Q1. Why you want to join the company?
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Q2. Why should we hire you
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Write word count program

Q1. Architecture of Spark
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Q2. What is AWS Glue job
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Q1. Write a query to obtain the third transaction of every user
Ans. 
Query to retrieve the third transaction of every user
• Use a subquery to rank the transactions for each user

• Filter the results to only include the third transaction for each user
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Q2. Write a query that outputs the name of the credit card and how many cards are issued in it's launch month
Ans. 
Query to output the name of credit card and number of cards issued in launch month
• Use GROUP BY to group by launch month

• Count the number of cards issued in each launch month

• Select the name of the credit card and the count of cards issued
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Q1. Short Introduction
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Q2. Experience and salary
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Q1. Introduce yourself
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Q2. Mock call & product pitch
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Was asked to profile companies

Q1. How will you approach a market research problem
Ans. 
I will approach a market research problem by first defining the objectives, conducting thorough research, analyzing data, and presenting actionable insights.
• Define the research objectives clearly to ensure focus

• Conduct thorough research using a mix of qualitative and quantitative methods

• Analyze the data collected to identify trends, patterns, and insights

• Present actionable recommendations based on the findings

• Stay upda
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Q1. I am unable to understand why they conduct interview if the interviewer is not fimilier about the role. waste of time to attend the interview
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Q2. Unrelated queations
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Q1. Unrelated scenarios and questions
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