Infosys Interview Questions, Process, and Tips

Leetcode Problems
Medium to easy

Q1. Find the vowels
Ans. 
Identify and list the vowels in a given string.
• Loop through each character in the string

• Check if the character is a vowel (a, e, i, o, u)

• Add the vowel to a list/array
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Q2. Project you worked on
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30 question related to aptitude and coding sudo code.

Q1. Why we use while loop and for loop.
Ans. 
While loops are used when the number of iterations is unknown, while for loops are used when the number of iterations is known.
• While loops are used when a condition needs to be checked before each iteration.

• For loops are used when the number of iterations is known beforehand.

• While loops are more flexible but can lead to infinite loops if not properly controlled.

• For loops are more structured and easier to read for repet...read more
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Q2. What is machine learning and Artificial intelligence
Ans. 
Machine learning is a subset of artificial intelligence that allows systems to learn and improve from experience without being explicitly programmed.
• Machine learning involves algorithms that learn patterns and make predictions based on data.

• Artificial intelligence is the broader concept of machines being able to carry out tasks in a way that we would consider 'smart'.

• AI can include machine learning, but also encompasse...read more
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Q1. Tell me about yourself
Ans. 
I am a dedicated and experienced System Engineer with a strong background in network infrastructure and troubleshooting.
• Over 5 years of experience in designing, implementing, and maintaining network systems

• Proficient in troubleshooting hardware and software issues

• Skilled in network security protocols and best practices

• Certified in Cisco networking technologies

• Strong communication and problem-solving skills
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Q2. Why we hire you
Ans. 
I have the technical skills, experience, and passion to successfully contribute to the team and help achieve company goals.
• Strong technical skills in system engineering

• Proven track record of successfully completing projects

• Passionate about staying up-to-date with the latest technologies

• Ability to work well in a team and communicate effectively
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Q1. Diff between innumerable and iqueryable?
Ans. 
Innumerable is a collection that cannot be counted, while IQueryable is an interface that allows querying data sources.
• Innumerable represents a collection that cannot be enumerated or counted.

• IQueryable is an interface in LINQ that allows querying data sources like databases, collections, etc.

• Innumerable collections are evaluated immediately, while IQueryable collections are evaluated when the query is executed.

• Example...read more
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Q2. Write a code to check palindrome
Ans. 
Code to check if a given string is a palindrome.
• Convert the string to lowercase and remove spaces and punctuation.

• Compare the string with its reverse to check for palindrome.

• Return true if the string is a palindrome, false otherwise.
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Q3. Types of polymorphism
Ans. 
Types of polymorphism in programming include compile-time polymorphism (method overloading) and runtime polymorphism (method overriding).
• Compile-time polymorphism is achieved through method overloading, where multiple methods have the same name but different parameters.

• Runtime polymorphism is achieved through method overriding, where a subclass provides a specific implementation of a method that is already defined in i
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Q4. Oops properties
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Q5. Rest API
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Q6. What is linq
Ans. 
LINQ is a feature in C# that allows for querying data from different data sources using a syntax similar to SQL.
• LINQ stands for Language Integrated Query

• It allows for querying data from collections, databases, XML, and more

• LINQ queries are written in a declarative syntax

• Example: var result = from num in numbers where num % 2 == 0 select num;
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Q1. Mainly on project architectures
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Q2. How APIs work
Ans. 
APIs work by allowing different software applications to communicate with each other through a set of rules and protocols.
• APIs define the methods and data formats that applications can use to request and exchange information.

• APIs can be used to access services or data from a remote server or application.

• APIs can be RESTful, SOAP-based, or other types depending on the requirements of the applications.

• APIs often require ...read more
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Q3. How to optimize sps
Ans. 
Methods to optimize SPS include data analysis, training programs, performance incentives, and technology integration.
• Conduct data analysis to identify areas of improvement and track progress over time.

• Implement training programs to enhance sales skills and product knowledge.

• Offer performance incentives such as bonuses or rewards for meeting or exceeding targets.

• Integrate technology solutions like CRM systems to streaml
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Q1. How to manage difficult situation
Ans. 
I use active listening, empathy, problem-solving, and conflict resolution techniques to manage difficult situations.
• Practice active listening to understand the root of the issue

• Show empathy towards the emotions of all parties involved

• Utilize problem-solving skills to find mutually beneficial solutions

• Employ conflict resolution techniques to de-escalate tensions
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Q1. What are Java8 streams
Ans. 
Java8 streams are a sequence of elements that support functional-style operations.
• Streams allow for processing sequences of elements in a functional way

• They can be created from collections, arrays, or other sources

• Operations like map, filter, reduce can be applied to streams

• Streams are lazy, meaning they only process elements when needed

• Example: List names = Arrays.asList("Alice", "Bob", "Charlie"); Stream stream = nam
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Q2. What are aggregate and terminal operations in java8 streams
Ans. 
Aggregate operations perform operations on a stream of elements, while terminal operations produce a result or side-effect.
• Aggregate operations include map, filter, reduce, etc.

• Terminal operations include forEach, collect, reduce, etc.

• Example: stream.filter(x -> x > 5).map(x -> x * 2).forEach(System.out::println);
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Q3. Aggregate function sql
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Q4. Why spring boot over spring
Ans. 
Spring Boot simplifies the setup and development process by providing a pre-configured environment for Spring applications.
• Spring Boot reduces the amount of boilerplate code needed for setting up a Spring application.

• It provides embedded servers like Tomcat, Jetty, or Undertow, making it easier to deploy standalone applications.

• Spring Boot offers a wide range of starter dependencies to quickly add common functionalitie...read more
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Basic apptitude test, cover mathematics, programming and puzzle

Q1. Encapsulation, abstraction, dbms
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Q1. Could you provide a brief self-introduction?
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Q2. Details about my most recent project
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Q3. Number of team members?
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Q4. Did I receive a direct requirement from the client?
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Q5. Education details of BTech and resume skill certifications?
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