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ACS Group Software Engineer Interview Questions, Process, and Tips

Updated 7 Dec 2021

Top ACS Group Software Engineer Interview Questions and Answers

View all 17 questions

ACS Group Software Engineer Interview Experiences

2 interviews found

I applied via Naukri.com and was interviewed in Nov 2021. There were 3 interview rounds.

Interview Questionnaire 

3 Questions

  • Q1. Scenario based ETL load questions
  • Q2. Joins, indexes, query optimization
  • Q3. Sql unmatching records

Interview Preparation Tips

Interview preparation tips for other job seekers - Be honest and real. The interviewer will try to check your knowledge by giving scenario based questions. Be strong with basic concepts, you will crack it

I applied via Naukri.com and was interviewed in Mar 2021. There were 3 interview rounds.

Interview Questionnaire 

17 Questions

  • Q1. What is connection pooling?
  • Ans. 

    Connection pooling is a technique of reusing database connections to improve performance.

    • Connection pooling helps to reduce the overhead of creating and closing database connections.

    • It maintains a pool of database connections that can be reused by multiple clients.

    • It improves the scalability and performance of the application.

    • Connection pooling can be configured with parameters like maximum pool size, timeout, etc.

    • Exam...

  • Answered by AI
  • Q2. What are SOLID Principles?
  • Ans. 

    SOLID principles are a set of five design principles for writing maintainable and scalable code.

    • S - Single Responsibility Principle

    • O - Open-Closed Principle

    • L - Liskov Substitution Principle

    • I - Interface Segregation Principle

    • D - Dependency Inversion Principle

  • Answered by AI
  • Q3. Describe generations of Garbage collection.
  • Ans. 

    Generations of Garbage collection are used to manage memory in Java applications.

    • Garbage collection is the process of automatically freeing up memory that is no longer in use by the application.

    • Generational garbage collection divides objects into different generations based on their age and usage patterns.

    • Young generation is where new objects are created and old objects that survive multiple garbage collections are mov...

  • Answered by AI
  • Q4. IEnumerable vs Iqueryable
  • Ans. 

    IEnumerable is in-memory collection while IQueryable is a queryable data source.

    • IEnumerable is used for querying data from in-memory collections like List, Array, etc.

    • IQueryable is used for querying data from a database or remote data source.

    • IQueryable supports deferred execution while IEnumerable does not.

    • IQueryable allows for filtering, sorting, and paging to be done on the server side.

    • IQueryable is more efficient wh

  • Answered by AI
  • Q5. IEnumerable vs Lists
  • Ans. 

    IEnumerable is an interface while List is a class in C#.

    • IEnumerable is read-only and can only be iterated over.

    • List is a collection that can be modified and indexed.

    • IEnumerable is more memory efficient for large datasets.

    • List has more functionality like sorting and searching.

    • IEnumerable can be used with LINQ queries.

    • List is faster for small datasets.

  • Answered by AI
  • Q6. What is API Versioning?
  • Ans. 

    API versioning is the process of managing and updating different versions of an API.

    • API versioning allows developers to make changes to an API without breaking existing client applications.

    • It involves assigning a version number to each release of the API.

    • Versioning can be done through URL paths, headers, or query parameters.

    • Examples of API versioning include Twitter API v1.1 and Google Maps API v3.

    • API versioning is imp...

  • Answered by AI
  • Q7. How to prevent SQL Injection?
  • Ans. 

    Prevent SQL Injection by using parameterized queries and input validation.

    • Use parameterized queries instead of concatenating user input with SQL statements.

    • Sanitize user input by validating and escaping special characters.

    • Limit database user privileges to only necessary actions.

    • Implement web application firewalls to detect and block SQL injection attempts.

    • Regularly update and patch software to fix known vulnerabilities

  • Answered by AI
  • Q8. What are Delegates and types of delegates?
  • Ans. 

    Delegates are reference types that hold a reference to a method. They are used to achieve loose coupling and extensibility.

    • Delegates allow methods to be passed as parameters to other methods.

    • They can be used to implement callbacks and event handlers.

    • Delegates can be multicast, meaning they can hold references to multiple methods.

    • There are two types of delegates: singlecast and multicast.

  • Answered by AI
  • Q9. What is Multicasting in Angular?
  • Ans. 

    Multicasting in Angular is a technique to broadcast a single stream of data to multiple subscribers.

    • It allows multiple subscribers to receive the same data stream.

    • It reduces the number of HTTP requests made by the application.

    • It can be achieved using RxJS operators like multicast() and refCount().

  • Answered by AI
  • Q10. Observable vs Promises
  • Ans. 

    Observables are streams of data while Promises are one-time operations.

    • Observables can emit multiple values over time while Promises can only resolve once.

    • Observables can be cancelled while Promises cannot.

    • Observables are lazy while Promises are eager.

    • Observables can handle errors within the stream while Promises require a catch block.

    • Observables are used in reactive programming while Promises are used in asynchronous

  • Answered by AI
  • Q11. What is the use of base herf in index.html?
  • Ans. 

    Base href in index.html is used to specify the base URL for all relative URLs in the document.

    • Base href is used to set the base URL for all relative URLs in the document.

    • It is helpful when working with multiple directories or when the website is hosted on a subdirectory.

    • Example: <base href='https://www.example.com/'>

  • Answered by AI
  • Q12. What is the use of polyfills?
  • Ans. 

    Polyfills are code that allows modern browsers to support features that are not natively supported.

    • Polyfills are used to bridge the gap between modern web development and older browsers.

    • They provide a way to use new features without worrying about browser compatibility.

    • Polyfills can be used for features like CSS Grid, Fetch API, and ES6 syntax.

    • They are often included in JavaScript libraries and frameworks like React an

  • Answered by AI
  • Q13. What are Life cycle hooks?
  • Ans. 

    Life cycle hooks are methods that allow you to tap into the lifecycle of a component in Angular.

    • Life cycle hooks are used to perform actions at specific stages of a component's lifecycle.

    • There are eight different life cycle hooks in Angular.

    • Examples of life cycle hooks include ngOnInit, ngOnChanges, and ngOnDestroy.

  • Answered by AI
  • Q14. How component Interaction done?
  • Ans. 

    Component interaction is the process of communication and data exchange between different software components.

    • Components can interact through APIs, events, or shared memory.

    • APIs allow components to expose their functionality to other components.

    • Events enable components to notify each other of changes or trigger actions.

    • Shared memory allows components to access and modify the same data.

    • Component interaction is crucial f

  • Answered by AI
  • Q15. What are route guards?
  • Ans. 

    Route guards are used in Angular to prevent unauthorized access to certain routes.

    • Route guards can be used to check if a user is authenticated before allowing access to a route.

    • There are three types of route guards: CanActivate, CanActivateChild, and CanLoad.

    • CanActivate is used to protect individual routes, while CanActivateChild is used to protect child routes.

    • CanLoad is used to prevent lazy-loaded modules from being

  • Answered by AI
  • Q16. What is AOT?
  • Ans. 

    AOT stands for Ahead of Time compilation, a technique used to compile code before it is executed.

    • AOT is used to improve the performance of applications by compiling code before it is executed.

    • It is commonly used in mobile app development to reduce app startup time.

    • AOT can also help to reduce the size of the application binary.

    • Examples of AOT compilers include Google's Android Runtime (ART) and Apple's LLVM-based compil

  • Answered by AI
  • Q17. How is Two way binding done?
  • Ans. 

    Two way binding is a technique used in software development to keep data synchronized between the model and the view.

    • Two way binding allows changes made to the model to be reflected in the view and vice versa.

    • It is commonly used in front-end frameworks like Angular and React.

    • In Angular, two way binding is achieved using [(ngModel)] directive.

    • In React, two way binding can be achieved using state and props.

    • Two way bindin...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Interview for a .net + angular developer for 2 year experience.

Skills evaluated in this interview

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I applied via Referral and was interviewed before Jan 2021. There was 1 interview round.

Interview Questionnaire 

1 Question

  • Q1. Java questions

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare basic questions

I applied via Campus Placement and was interviewed before Feb 2021. There were 3 interview rounds.

Round 1 - Aptitude Test 

Aptitude round consists Logical reasoning, General Aptitude, Grammar related questions etc. All are moderate level questions.

Round 2 - Technical 

(3 Questions)

  • Q1. Explain OOPs w.r.t Java
  • Ans. 

    OOPs is a programming paradigm that uses objects to represent real-world entities. Java is an OOPs language.

    • OOPs stands for Object-Oriented Programming System

    • Java is a class-based OOPs language

    • Encapsulation, Inheritance, Polymorphism, and Abstraction are the four pillars of OOPs

    • Objects have state and behavior

    • Java supports interfaces, which allow for multiple inheritance

    • Example: A car can be represented as an object wit...

  • Answered by AI
  • Q2. Explain about the projects that you have worked on
  • Q3. Explain how Java solves machine dependency of code execution
  • Ans. 

    Java solves machine dependency by using bytecode and virtual machine.

    • Java code is compiled into bytecode which is platform-independent

    • The bytecode is executed by the Java Virtual Machine (JVM) which is platform-specific

    • JVM translates bytecode into machine code for the specific platform

    • This allows Java code to run on any platform with a JVM installed

    • Example: A Java program compiled on Windows can run on Linux or Mac as

  • Answered by AI
Round 3 - HR 

(2 Questions)

  • Q1. Why should we hire you?
  • Q2. Tell me about yourself.

Interview Preparation Tips

Topics to prepare for Infosys System Engineer interview:
  • Java
Interview preparation tips for other job seekers - Keep it simple, Prepare basics of 1st preferred Programming Language.

Skills evaluated in this interview

I applied via Campus Placement and was interviewed before May 2021. There were 2 interview rounds.

Round 1 - Aptitude Test 

Numerical ability and logical reasoning followed by some coding mcqs

Round 2 - Technical 

(1 Question)

  • Q1. Print 1 to 100 without for loop
  • Ans. 

    Printing 1 to 100 without for loop

    • Use recursion to print numbers from 1 to 99

    • Print 100 outside the recursion

    • Use a base case to stop recursion at 100

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare from interview bit and practice mcqs

I applied via Campus Placement and was interviewed before Jun 2021. There were 2 interview rounds.

Round 1 - Aptitude Test 

Simple aptitude test

Round 2 - One-on-one 

(1 Question)

  • Q1. General questions as per your cv

Interview Preparation Tips

Topics to prepare for Infosys System Engineer interview:
  • Aptitude
Interview preparation tips for other job seekers - Great company for freshers.. lot to learn and experience

I applied via Campus Placement and was interviewed before Aug 2021. There were 2 interview rounds.

Round 1 - Aptitude Test 

It was a basic aptitude test.

Round 2 - One-on-one 

(1 Question)

  • Q1. Interview was fine. Mostly asked about my final year project.

Interview Preparation Tips

Interview preparation tips for other job seekers - Attend the interview with cool head. All the best.

I applied via Campus Placement and was interviewed before Jun 2021. There were 2 interview rounds.

Round 1 - Aptitude Test 
Round 2 - Technical 

(1 Question)

  • Q1. Explain the mini projects and main project completed during Engineering.

Interview Preparation Tips

Topics to prepare for Infosys System Engineer interview:
  • DBMS
  • Software Engineering
  • Basic coding
Interview preparation tips for other job seekers - Just make sure the resume should be precise and you have knowledge on the things mentioned in your resume.

Be confident and have a smiling face in the interview round.

I applied via Campus Placement and was interviewed before May 2021. There were 2 interview rounds.

Round 1 - Coding Test 

- basic programming on C

Round 2 - HR 

(1 Question)

  • Q1. - question based on your resume

Interview Preparation Tips

Interview preparation tips for other job seekers - Things are asked only from resume . Make sure you recite every word you mentioned in your resume .
whatever project you are including , you should know enough to explain everything.

I applied via Campus Placement and was interviewed before Oct 2021. There were 3 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - Aptitude Test 

English reasoning and logical question

Round 3 - HR 

(2 Questions)

  • Q1. About self and hobbies
  • Q2. About activities involved in

Interview Preparation Tips

Interview preparation tips for other job seekers - Work on communication skills and brush up on aptitude & english tests

ACS Group Interview FAQs

What are the top questions asked in ACS Group Software Engineer interview?

Some of the top questions asked at the ACS Group Software Engineer interview -

  1. What are Delegates and types of delegat...read more
  2. What is the use of base herf in index.ht...read more
  3. What is Multicasting in Angul...read more

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ACS Group Software Engineer Salary
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