NTT DATA, Inc. Software Development Senior Analyst Interview Questions and Answers

Q1. SAS macros, Sas character functions, Technicalities of your previous works.
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Q1. Are you a team player
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Q2. Tell me something about yourself.
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Q3. Why are you leaving your job
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Coding test on SQL joins basic concepts on oops coding on def collections, method overloading,overriding,etc.,

Q1. Second round is Hr round
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Q2. Discuss about Salary details
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Q3. Discuss about I'd proofs and company
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Q1. Collections, Java 8 features, hibernate, DevOops
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Q2. Treemap and hashmap difference?
Ans. 
Treemap is a sorted map based on natural ordering of keys, while hashmap is an unordered map.
• Treemap stores key-value pairs in sorted order based on the natural ordering of keys.

• Hashmap does not guarantee any specific order of key-value pairs.

• Treemap uses a red-black tree for storage and retrieval, while hashmap uses hash table.

• Treemap is slower than hashmap for most operations due to the sorting overhead.

• Example: Tree...read more
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Q3. Hashmap internal working?
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HashMap is a data structure that stores key-value pairs and uses hashing to efficiently retrieve values based on keys.
• HashMap internally uses an array of linked lists to store key-value pairs.

• When a key-value pair is added, the key is hashed to determine the index in the array where the pair will be stored.

• If multiple keys hash to the same index, a linked list is used to handle collisions.

• Retrieving a value involves ha...read more
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Q4. Stream api in java 8?
Ans. 
Stream API in Java 8 provides a functional approach to processing collections of objects.
• Stream API allows for processing collections of objects in a functional style.

• It supports operations like filter, map, reduce, and collect.

• Streams can be sequential or parallel, allowing for efficient processing of large datasets.

• Example: List names = Arrays.asList("Alice", "Bob", "Charlie"); names.stream().filter(name -> name.sta
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Q5. Hibernate sessions?
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Q1. Questions based on Core Java OOP Concept
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Q2. 2 coding easy level questions
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Q1. Design pattern, hashmap internal working
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Q2. Microservices vs monolithic
Ans. 
Microservices allow for modular and scalable architecture, while monolithic is simpler but can be harder to maintain.
• Microservices break down applications into smaller, independent services that communicate through APIs.

• Monolithic architecture involves building the entire application as a single unit.

• Microservices offer flexibility, scalability, and fault isolation.

• Monolithic applications are easier to develop and depl...read more
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