ALDI Data Engineer Interview Questions and Answers

Asked me two string array question one was to reverse a string without any pre build function and second one was a medium question to print the number and the count of it into the next level of the tree

Q1. Who is your idol?
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Q2. How do you menage your work?
Ans. 
I manage my work by prioritizing tasks, setting goals, staying organized, and communicating effectively with team members.
• Prioritize tasks based on deadlines and importance

• Set clear goals and milestones to track progress

• Stay organized with tools like project management software

• Communicate effectively with team members to ensure alignment and collaboration
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Q1. Which formula use in open a word or file in excel
Ans. 
You can use the formula =HYPERLINK("path to file") to open a word or file in Excel.
• Use the HYPERLINK function in Excel

• Insert the path to the file within double quotes

• Example: =HYPERLINK("C:\Users\Documents\example.docx")
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Q2. Details information about excel .
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Q1. Basic C# and oops questions , mostly on inheritance , abstraction ,encapsulation , properties
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Q2. Coding questions related to strings finding longest substring without repeating characters , find the count of vowels in string with using dictionary kr hash ( used ascii value approach)
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Q1. Mostly on project .
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Q2. Was asked about design patterns , had to create a design for a simple . How would I structure all the folders classes , interfaces logics etc .
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Q1. RDD, Datafram, dataset difference
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Q2. Find the 2nd hightest salary
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Q3. What is ADF in azure
Ans. 
ADF in Azure stands for Azure Data Factory, a cloud-based data integration service that allows you to create, schedule, and manage data pipelines.
• Azure Data Factory (ADF) is used to orchestrate and automate data movement and data transformation.

• It supports a wide range of data sources, including Azure Blob Storage, Azure SQL Database, and on-premises data sources.

• ADF allows you to create data pipelines using a visual i...read more
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Q1. Technical questions based on my resume, coding, project architect, etc.
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Q1. System design round. LLD and HLD.
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Q1. Managerial with a little bit of technical. Work ethics, vision and ctc expectations.
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Q1. Compensation discussion.
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Prime Number, Oops, SQL Coding

Q1. Spark, Big Data, Python, SQL
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Q1. What is interrupt vector table
Ans. 
Interrupt vector table is a data structure that maps interrupt numbers to their corresponding interrupt service routines.
• It is used in microcontrollers and operating systems to handle interrupts.

• Each entry in the table contains the address of the interrupt service routine for a specific interrupt.

• When an interrupt occurs, the processor looks up the corresponding entry in the table to find the address of the ISR to exec...read more
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Q2. C program to pass array in function
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Passing array of strings in a C function
• Declare the function prototype with array parameter

• Pass the array as argument when calling the function

• Access elements of the array within the function

• Example: void printStrings(char *strings[], int size) { }
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