Datacomp Web Technologies (i) Senior Technical Support Engineer Interview Questions and Answers

Q1. Questions based on Objects and Classes Basic Questions related to DSA Projects discussions- Your Roles and Tasks Scenario based Questions Few Reasoning Questions
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Q1. Questions related to Trees and Graphs nested SQL Queries Scenario Based Questions Projects Logics for the coding given
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Q1. Just basic HR Questions Reallocation
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Question were based on coding 1 with linked list 1 with string and 1 sql one

Q1. Questions were based on oops, dsa, dbms, and more technical concepts from operating systems
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Basic aptitude test and was unproctored

Q1. It was a online technical round
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Q1. A Lot of OOPS and Virtual concept
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Q2. Basic SQL till joins
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Q3. Java script medium
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Q4. C# oops output based
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This one is a combination of aptitude and coding test where medium questions abt c,cpp are asked
Do few aptitude test and some level of coding and ull be able to clear the test quite easily

Q1. What is inheritance in cpp Basic oops concept question Basic dbms related question
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Q1. For me they just asked me about my project and i was good to go
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Q1. What is singleton design pattern
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Singleton design pattern restricts the instantiation of a class to a single instance and provides global access to it.
• Used when only one instance of a class is required throughout the application

• Provides a global point of access to the instance

• Implemented using a private constructor, static method, and static variable

• Example: Logger class, Database connection class
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Q2. C# LINQ queries for group and sum data from data table
Ans. 
C# LINQ queries for group and sum data from data table
• Use GroupBy() method to group data based on a specific column

• Use Sum() method to calculate the sum of a column

• Use Select() method to select the required columns
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Q3. Solid design principles
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Solid design principles are a set of guidelines for writing maintainable and scalable code.
• Single Responsibility Principle (SRP) - each class should have only one responsibility

• Open/Closed Principle (OCP) - classes should be open for extension but closed for modification

• Liskov Substitution Principle (LSP) - subclasses should be able to replace their parent classes without affecting the program's correctness

• Interface Se...read more
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Q4. OOPS concepts ,like association and all
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MCQ questions on OS, JS and HTML

Basic Questions from resume. String/Array DSA questions