Hitachi Digital Services Consultant Interview Questions and Answers

Create a business requirement document

Q1. What are the strengths and weakness
Ans. 
Strengths include strong analytical skills and attention to detail. Weaknesses may include difficulty with public speaking and time management.
• Strengths: strong analytical skills

• Strengths: attention to detail

• Weaknesses: difficulty with public speaking

• Weaknesses: time management
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Q1. Technical questions regarding selenium testing.
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Q1. Two PySpark based question: 1) Count of words in para 2) Creating a flow of pipeline.
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Q1. What is Supervised machine learning? Which algorithm you think you can explain brilliantly? Why we use random forest then normal decision tree
Ans. 
Supervised machine learning is a type of ML where the algorithm learns from labeled data. Random forest is used over normal decision tree for better accuracy and to avoid overfitting.
• Supervised ML learns from labeled data to make predictions on new data

• Random forest is an ensemble learning method that uses multiple decision trees to improve accuracy

• Random forest is preferred over normal decision tree to avoid overfitti...read more
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Q2. Example of case study
Ans. 
Case study on a successful marketing campaign for a new product launch
• Identified target audience and their needs

• Developed a unique selling proposition

• Created a multi-channel marketing plan

• Implemented the plan and tracked results

• Adjusted strategy based on data analysis

• Achieved high sales and positive customer feedback
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Retail case study , company trends salw.. Total sale. Profit charts and reports

Java Coding, Collections and Selenium code was asked

Q1. Maps, Window handling
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Q2. Array String in java
Ans. 
String is a sequence of characters in Java, stored as an array of Unicode characters.
• Strings are immutable in Java, meaning their values cannot be changed once created.

• String objects can be created using string literals or the new keyword.

• String class provides various methods for manipulating strings, such as substring(), length(), etc.

• String concatenation can be done using the + operator or the concat() method.

• String ...read more
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It was related to a Food & Beverage Industry Data