Marsh McLennan Senior Software Engineer Interview Questions and Answers

Test was for Web Development - React
75min test
3 Questions
1 Coding Question
2 Scenario based questions

Q1. React Optimization techniques
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Q2. React Advantages
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Q1. How to debug in production environment?
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Q1. Challenges faced during work and how you overcome?
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Q1. Why you choose Wells fargo over other offers?
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Q1. Java difference between Finally, Finalize
Ans. 
Finally is a block of code that always executes, while Finalize is a method used for cleanup before an object is garbage collected.
• Finally block is used in exception handling to ensure certain code is always executed, regardless of whether an exception is thrown or not.

• Finalize method is called by the garbage collector before an object is reclaimed.

• Finally block is used in try-catch-finally blocks, while Finalize metho...read more
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Q2. Programming question - Find second largest string from a given sentence
Ans. 
Find the second largest string from a given sentence
• Split the sentence into an array of strings

• Sort the array based on string length

• Return the second last element in the sorted array
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Q3. Difference between AWS cloud front and cloud formation
Ans. 
AWS CloudFront is a content delivery network (CDN) service, while AWS CloudFormation is an infrastructure as code service.
• CloudFront is used to deliver content to end users with low latency and high data transfer speeds.

• CloudFormation is used to automate the deployment of infrastructure resources in a repeatable and predictable manner.

• CloudFront is a CDN service that caches content at edge locations to reduce latency, ...read more
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Q4. How to improve performance in react js ?
Ans. 
To improve performance in React JS, optimize rendering, minimize re-renders, use virtualization, lazy loading, code splitting, and memoization.
• Optimize rendering by using shouldComponentUpdate or React.memo for functional components

• Minimize re-renders by using PureComponent or memoization techniques like useMemo or useCallback

• Use virtualization for long lists or tables to render only the visible items

• Implement lazy loa...read more
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Q1. What is list comprehension
Ans. 
List comprehension is a concise way to create lists in Python by applying an expression to each item in an iterable.
• List comprehension is written inside square brackets []

• It consists of an expression followed by a for clause, then zero or more if clauses

• Example: squares = [x**2 for x in range(10)]
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Q2. Explain spark architecture
Ans. 
Apache Spark is a distributed computing system that provides an interface for programming entire clusters with implicit data parallelism and fault tolerance.
• Apache Spark follows a master-slave architecture with a driver program that communicates with a cluster manager to distribute work across worker nodes.

• It uses Resilient Distributed Datasets (RDDs) as the basic data structure, which are immutable distributed collect...read more
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Write code for palindtomr

Q1. Maching Coding - Factory design patter
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Q2. Multi-Threading : Object level and class level lock
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Q3. Distributed Caching
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Mostly they asked questions on String or basic coding questions

Q1. Core java questions basics, SpringBoot Microservice ,Sql questions
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Q1. Mostly questions on core java, day to day activities , agile,beghavioural questions
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Q1. Salary Expectation
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Q1. Explain Project Architecture
Ans. 
Project architecture refers to the high-level structure of a software system, including components, relationships, and interactions.
• Project architecture defines how different components of a software system interact with each other.

• It includes the design decisions related to the organization of code, data, and resources.

• Common architectural patterns include MVC, microservices, and serverless.

• Architectural diagrams like...read more
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Q2. Springboot components
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Q3. Angular Lifecycle
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Q1. Tell about yourself
Ans. 
I am a Senior Software Engineer with 8 years of experience in developing scalable and efficient software solutions.
• Experienced in full stack development using technologies like Java, Spring Boot, Angular, and SQL

• Strong background in designing and implementing RESTful APIs

• Proficient in Agile methodologies and working in cross-functional teams

• Passionate about continuous learning and staying updated with the latest techno
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Q2. Your confidence level with Java
Ans. 
Highly confident in Java with 8+ years of experience in developing complex applications
• 8+ years of experience in Java development

• Proficient in Java programming language features and best practices

• Extensive experience in developing complex applications using Java

• Familiar with Java frameworks and libraries such as Spring, Hibernate, and Apache Commons

• Comfortable with multi-threading, performance optimization, and debuggi
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Anagram, Pythagorean triplets

Js coding test with modifications