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OCS Group Software Engineer Interview Questions and Answers

Updated 19 Jul 2021

OCS Group Software Engineer Interview Experiences

1 interview found

I applied via Referral and was interviewed before Jul 2020. There was 1 interview round.

Interview Questionnaire 

1 Question

  • Q1. About VCB, ACB, UPS, inverter, transformers, DG set, chillers, AHU, fire systems and excel work and PPT

Interview Preparation Tips

Interview preparation tips for other job seekers - Need to take full knowledge, & ensure that I'm capable for this post & ready to take any challenge

Interview questions from similar companies

I was interviewed in Dec 2020.

Round 1 - Coding Test 

(1 Question)

Round duration - 60 Minutes
Round difficulty - Medium

The round started at 8 PM. There was one question with several test cases and had to pass every test case in order to get a call for interview.

  • Q1. 

    Nth Fibonacci Number Problem Statement

    Calculate the Nth term in the Fibonacci sequence, where the sequence is defined as follows: F(n) = F(n-1) + F(n-2), with initial conditions F(1) = F(2) = 1.

    Input:

    ...
Round 2 - Video Call 

(1 Question)

Round duration - 45 Minutes
Round difficulty - Medium

It was first round for 45mins and only one question was asked.

  • Q1. 

    Sum Of Zeroes Coverage Calculation

    You are provided with a binary matrix containing dimensions 'N * M', comprised only of 0s and 1s. Your task is to compute the aggregated sum of coverages for all the zer...

Round 3 - Video Call 

(1 Question)

Round duration - 45 Minutes
Round difficulty - Easy

It was again 45 min interview and after an intro we quickly jumped in coding.

  • Q1. 

    Word Occurrence Counting

    Given a string 'S' of words, the goal is to determine the frequency of each word in the string. Consider a word as a sequence of one or more non-space characters. The string can h...

Round 4 - Video Call 

(1 Question)

Round duration - 45 minutes
Round difficulty - Medium

It was an Technical + HR round. The interviewer was very understanding and he checked the overall knowledge of the subject.

  • Q1. 

    Kth Smallest Element Problem Statement

    You are provided with an array of integers ARR of size N and an integer K. Your task is to find and return the K-th smallest value present in the array. All elements...

Interview Preparation Tips

Professional and academic backgroundI applied for the job as Software Engineer in HyderabadEligibility criteriaNoCompass Group interview preparation:Topics to prepare for the interview - Data Structures and Algorithms, Dynamic Programming, Object Oriented Programming, DBMS, Operating SystemTime required to prepare for the interview - 10 monthsInterview preparation tips for other job seekers

Tip 1 : Competitive Coding helps initially, later Leetcode, GFG
Tip 2 : Add at least 2 projects in your resume
 

Application resume tips for other job seekers

Tip 1 : Add atleast two projects on Resume
Tip 2 : Study in depth from Resume and make your friend take your mock interview

Final outcome of the interviewRejected

Skills evaluated in this interview

I applied via Recruitment Consultant and was interviewed in Jan 2020. There were 4 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Questions on C#,SQL,wpf

Interview Preparation Tips

Interview preparation tips for other job seekers - Be confident on whatever knowledge you have. Do not say things that you don't have knowledge about.
Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Aptitude Test 

Basic questions on maths related parts and analysis skills

Round 2 - Coding Test 

Coding questions from various Data Structure parts like linkedList stack queue

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed before Dec 2023. There was 1 interview round.

Round 1 - Technical 

(1 Question)

  • Q1. What is react life cycle?
Interview experience
1
Bad
Difficulty level
-
Process Duration
-
Result
-
Round 1 - One-on-one 

(1 Question)

  • Q1. Basic oops concept

I applied via Naukri.com and was interviewed before May 2021. There was 1 interview round.

Round 1 - Technical 

(1 Question)

  • Q1. What is Mvc life cycle? explian
  • Ans. 

    MVC life cycle is a series of steps that occur when a request is made to an MVC application.

    • Request is received by the routing engine

    • Routing engine determines the controller and action to handle the request

    • Controller is instantiated and action method is called

    • Action method returns a view

    • View is rendered and returned as a response

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - prepare in depth for interview. oops concept with example

Skills evaluated in this interview

I applied via Recruitment Consultant and was interviewed in Jun 2021. There was 1 interview round.

Interview Questionnaire 

1 Question

  • Q1. Work experience in mechanical
  • Ans. 

    I have 10 years of work experience in mechanical engineering.

    • Designed and implemented mechanical systems for various projects

    • Performed analysis and simulations to optimize performance

    • Collaborated with cross-functional teams to ensure project success

    • Managed and supervised junior engineers

    • Implemented cost-saving measures in manufacturing processes

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Once refer your resume first

I applied via Naukri.com and was interviewed before Nov 2019. There was 1 interview round.

Interview Questionnaire 

8 Questions

  • Q1. What is linq?
  • Ans. 

    LINQ (Language Integrated Query) is a Microsoft technology that allows querying data from different sources using a common syntax.

    • LINQ provides a unified way to query data from different sources such as databases, XML documents, and collections.

    • It allows developers to write queries using a common syntax regardless of the data source.

    • LINQ queries are strongly typed and can be checked at compile time.

    • Examples of LINQ pro...

  • Answered by AI
  • Q2. What is ado. Net?
  • Ans. 

    ADO.NET is a data access technology used to connect applications to databases.

    • ADO.NET provides a set of classes to interact with databases.

    • It supports disconnected data architecture.

    • It uses Data Providers to connect to different databases.

    • It supports LINQ to SQL for querying databases.

    • Examples of Data Providers are SQL Server, Oracle, MySQL, etc.

  • Answered by AI
  • Q3. What is wpf?
  • Ans. 

    WPF stands for Windows Presentation Foundation. It is a graphical subsystem for rendering user interfaces in Windows-based applications.

    • WPF is a part of .NET Framework and provides a unified programming model for building desktop applications.

    • It uses XAML (eXtensible Application Markup Language) to define and create user interfaces.

    • WPF supports rich media, 2D and 3D graphics, animation, and data binding.

    • It allows for s...

  • Answered by AI
  • Q4. Why we use wpf instead of windows?
  • Ans. 

    WPF provides better UI design and development options than Windows Forms.

    • WPF allows for more flexible and customizable UI design.

    • WPF supports vector graphics and animations.

    • WPF has better data binding capabilities.

    • WPF is more modern and actively developed than Windows Forms.

    • WPF is better suited for creating modern desktop applications.

  • Answered by AI
  • Q5. What is procedures and triggers?
  • Ans. 

    Procedures and triggers are database objects used to automate tasks and enforce rules.

    • Procedures are a set of SQL statements that can be executed repeatedly.

    • Triggers are special types of procedures that are automatically executed in response to certain events.

    • Triggers can be used to enforce business rules, audit changes, or replicate data.

    • Procedures and triggers can be written in various programming languages such as S

  • Answered by AI
  • Q6. What is abstract class?
  • Ans. 

    An abstract class is a class that cannot be instantiated and is used as a base class for other classes.

    • An abstract class can have abstract and non-abstract methods.

    • Abstract methods have no implementation and must be implemented by the derived class.

    • An abstract class can have constructors and fields.

    • An abstract class can be used to define a common interface for a group of related classes.

    • Example: Animal is an abstract c

  • Answered by AI
  • Q7. What is encapsulation and abstraction.
  • Ans. 

    Encapsulation is hiding implementation details while abstraction is showing only necessary details.

    • Encapsulation is achieved through access modifiers like private, protected, and public.

    • Abstraction is achieved through abstract classes and interfaces.

    • Encapsulation provides data security and prevents unauthorized access.

    • Abstraction helps in reducing complexity and improves maintainability.

    • Example of encapsulation: Class ...

  • Answered by AI
  • Q8. What is singleton design pattern?
  • Ans. 

    Singleton design pattern restricts the instantiation of a class to a single instance.

    • Ensures only one instance of a class exists

    • Provides a global point of access to that instance

    • Used when only one object is needed to coordinate actions across the system

    • Example: Database connection manager

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Interviewer was just 3-4 yrs exp person he also dont have much more technical knowledge.

Skills evaluated in this interview

I was interviewed before Apr 2021.

Round 1 - Video Call 

(4 Questions)

Round duration - 60 Minutes
Round difficulty - Medium

In this round, the interviewer asked me 2 coding questions , the first one was related to Simple Hashing and the second one was to implement Kadane's Algorithm. I coded both the solutions in the given time and at the end was also asked some questions revolving around OOPS and C#.

  • Q1. 

    Find All Pairs Adding Up to Target

    Given an array of integers ARR of length N and an integer Target, your task is to return all pairs of elements such that they add up to the Target.

    Input:

    The first line ...
  • Ans. 

    The task is to find all pairs of elements in an array that add up to a given target.

    • Iterate through the array and for each element, check if the target minus the element exists in a hash set.

    • If it exists, add the pair to the result. If not, add the element to the hash set.

    • Handle cases where the same element is used twice in a pair or no pair is found.

    • Time complexity can be optimized to O(N) using a hash set to store el

  • Answered by AI
  • Q2. 

    Maximum Subarray Sum Task

    Given an array or list ARR consisting of N integers, your objective is to compute the maximum possible sum obtainable from a non-empty subarray (a contiguous sequence) within thi...

  • Ans. 

    Find the maximum sum of a subarray within an array of integers.

    • Iterate through the array and keep track of the maximum sum of subarrays encountered so far.

    • At each index, decide whether to include the current element in the subarray or start a new subarray.

    • Update the maximum sum if a new maximum is found.

    • Example: For input [-2, 1, -3, 4, -1], the maximum subarray sum is 4.

  • Answered by AI
  • Q3. What do you mean by data encapsulation?
  • Ans. 

    Data encapsulation is the concept of bundling data and methods that operate on the data into a single unit.

    • Data encapsulation helps in hiding the internal state of an object and restricting access to it.

    • It allows for better control over the data by preventing direct access from outside the class.

    • Encapsulation also helps in achieving data abstraction, where only relevant information is exposed to the outside world.

    • Examp...

  • Answered by AI
  • Q4. What are the different ways in which a method can be overloaded in C#?
  • Ans. 

    Method overloading in C# allows multiple methods with the same name but different parameters.

    • Method overloading can be achieved by changing the number of parameters in a method.

    • Method overloading can be achieved by changing the data type of parameters in a method.

    • Method overloading can be achieved by changing the order of parameters in a method.

  • Answered by AI
Round 2 - Video Call 

(6 Questions)

Round duration - 60 Minutes
Round difficulty - Medium

This round was preety much mixed and had questions from LINQ , .NET framework, DBMS, OOPS and Design Patterns.

  • Q1. What is LINQ, and what are the advantages of using LINQ in a Dataset?
  • Ans. 

    LINQ (Language Integrated Query) is a feature in C# that provides a consistent way to query data sources.

    • LINQ allows for querying data from different sources like databases, collections, XML, etc.

    • Advantages of using LINQ in a Dataset include improved readability, type safety, and easier data manipulation.

    • LINQ queries are executed at compile time, providing better performance compared to traditional methods.

    • Example: var...

  • Answered by AI
  • Q2. What are the differences between LINQ and Stored Procedures?
  • Ans. 

    LINQ is a query language in C# for querying data from different data sources, while Stored Procedures are precompiled SQL queries stored in a database.

    • LINQ is used to query data from different data sources like collections, databases, XML, etc.

    • Stored Procedures are precompiled SQL queries stored in a database for reuse.

    • LINQ queries are written in C# code, while Stored Procedures are written in SQL.

    • LINQ provides type sa...

  • Answered by AI
  • Q3. What is an Expression Tree in LINQ?
  • Ans. 

    An Expression Tree in LINQ represents code as data structure, allowing queries to be manipulated and executed dynamically.

    • Expression Trees are used to represent lambda expressions in a tree-like data structure.

    • They allow LINQ queries to be translated into a format that can be analyzed and executed at runtime.

    • Expression Trees can be inspected and modified programmatically, enabling dynamic query generation.

    • Example: var ...

  • Answered by AI
  • Q4. What is the difference between a trigger and a procedure in a Database Management System (DBMS)?
  • Ans. 

    Triggers are automatically executed in response to certain events, while procedures are manually executed by users.

    • Triggers are automatically invoked in response to data manipulation events, such as INSERT, UPDATE, DELETE.

    • Procedures are stored sets of SQL statements that can be executed manually by users.

    • Triggers are defined to execute in response to a specific event on a specific table.

    • Procedures can be called explici...

  • Answered by AI
  • Q5. What are abstraction and data encapsulation in object-oriented programming?
  • Ans. 

    Abstraction is hiding complex implementation details, while data encapsulation is bundling data and methods together in a class.

    • Abstraction allows us to focus on the essential features of an object while hiding unnecessary details.

    • Data encapsulation restricts access to some of an object's components, protecting the integrity of the data.

    • Abstraction and data encapsulation help in achieving modularity and reusability in ...

  • Answered by AI
  • Q6. What are the types of design patterns in Java?
  • Ans. 

    Types of design patterns in Java include creational, structural, and behavioral patterns.

    • Creational patterns focus on object creation mechanisms, such as Singleton, Factory, and Builder patterns.

    • Structural patterns deal with object composition, such as Adapter, Decorator, and Proxy patterns.

    • Behavioral patterns focus on communication between objects, such as Observer, Strategy, and Template patterns.

  • Answered by AI
Round 3 - HR 

(1 Question)

Round duration - 30 Minutes
Round difficulty - Easy

This is a cultural fitment testing round. HR was very frank and asked standard questions. Then we discussed about my
role.

  • Q1. What is something about you that is not included in your resume?

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPACapita interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, OOPS, C#, .NET, Design PatternsTime required to prepare for the interview - 4 MonthsInterview preparation tips for other job seekers

Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.

Application resume tips for other job seekers

Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.

Final outcome of the interviewSelected

Skills evaluated in this interview

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