NTT Data Information Processing Services Technology Analyst Interview Questions and Answers

It was a multiple questions test, 90 minutes test 43 questions technical question based on the position i have applied. It is intermediate level of test. I have cleared the test.

Q1. After completed my Assessment test , I got a call from HR for technical round through WebEx. Yesterday interview done in that call panel asked about my role of my current company and asked about my project...read more
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Q2. Put vs patch in restful
Ans. 
In RESTful APIs, 'put' is used to update an entire resource, while 'patch' is used to update only specific fields of a resource.
• PUT is used to update the entire resource, while PATCH is used to update specific fields

• PUT requires the client to send the entire updated resource, while PATCH only requires the client to send the specific fields to be updated

• PUT is idempotent, meaning multiple identical requests will have th...read more
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Q3. Different between restful and webclient
Ans. 
Restful is an architectural style for designing networked applications, while WebClient is a class in Java used for making HTTP requests.
• RESTful is an architectural style that uses HTTP methods like GET, POST, PUT, DELETE to perform operations on resources.

• WebClient is a class in Java that provides a higher-level API for making HTTP requests and handling responses.

• RESTful APIs are stateless and use standard HTTP status...read more
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Q4. Serialization and deserialization in java
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Serialization is the process of converting an object into a byte stream, while deserialization is the process of converting a byte stream back into an object in Java.
• Serialization is achieved by implementing the Serializable interface in Java.

• Deserialization is done by reading the byte stream and reconstructing the object using the readObject() method.

• Example: ObjectOutputStream for serialization and ObjectInputStream
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Q5. What are functional interface in java8
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Functional interfaces in Java 8 are interfaces with a single abstract method, used for lambda expressions and method references.
• Functional interfaces have only one abstract method, but can have multiple default or static methods.

• They can be used with lambda expressions and method references.

• Examples include java.lang.Runnable, java.util.Comparator, and java.util.function.Predicate.
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Basic technical questions

Q1. Exepected salary?
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Q1. Substring, collection, sql from creating table to all queries will ask to write
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Q2. They ask to one notepad write prime example and example it.
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Q1. Write substring, sql quire and prime no explain it
Ans. 
Substring is a part of a string, SQL query is used to retrieve data from a database, and prime numbers are numbers divisible only by 1 and themselves.
• Substring: a portion of a string, specified by its starting and ending indices

• SQL query: a statement used to retrieve data from a database, using SELECT, FROM, WHERE, and other clauses

• Prime numbers: numbers that are only divisible by 1 and themselves, such as 2, 3, 5, 7,
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Time duration was 2 hours and question are related to dsa.

Time given was 2 minutes for each student

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Q1. How do u explain class & object with a real time example
Ans. 
A class is a blueprint for creating objects, while an object is an instance of a class.
• A class defines the properties and behaviors that an object can have.

• An object is created using the class as a template.

• For example, consider a class called 'Car' that has properties like 'color', 'brand', and 'model'. An object of this class can be created as 'myCar' with specific values for these properties.

• The class 'Car' can also...read more
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Q2. Multiple inheritance, method overloading, method overriding, jdbc, spring core
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Q1. Salary negotiation
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