Hitachi Interview Questions, Process, and Tips

Q1. Self introduction
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Q1. What you know about CyberSecurity
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Cybersecurity involves protecting computer systems, networks, and data from cyber attacks.
• Cybersecurity focuses on preventing unauthorized access, data breaches, and other cyber threats.

• It includes measures such as firewalls, encryption, antivirus software, and regular security audits.

• Cybersecurity professionals work to identify vulnerabilities and implement solutions to protect against cyber attacks.

• Examples of cyber ...read more
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Q1. Normalization in SQL, What is Cursor in SQL
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Normalization in SQL is the process of organizing data in a database to reduce redundancy and improve data integrity. A cursor in SQL is a database object used to retrieve and manipulate data row by row.
• Normalization in SQL involves breaking down a large table into smaller tables and defining relationships between them to reduce redundancy.

• Cursors in SQL are used to fetch and process individual rows returned by a query...read more
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Q2. .Net Core and API based questions
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Q3. Abstract and interface difference
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Abstract classes can have both abstract and non-abstract methods, while interfaces can only have abstract methods.
• Abstract classes can have constructors, fields, and non-abstract methods along with abstract methods

• Interfaces can only have abstract methods and constants

• A class can implement multiple interfaces but can only inherit from one abstract class
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Q4. Const and read only difference in C#
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Const keyword is used to declare constants at compile time, while read-only keyword is used to create immutable fields that can only be assigned a value at runtime.
• Const values are determined at compile time and cannot be changed, while read-only values can only be assigned a value once at runtime.

• Const fields are implicitly static, while read-only fields are not.

• Example: const int x = 5; read-only int y = 10;
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Q5. Azure basic fundamental questions
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Q6. Sample query to join tables using SQL
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Sample query to join tables using SQL
• Use the JOIN keyword to combine rows from two or more tables based on a related column between them

• Specify the columns to be selected from each table

• Use the ON keyword to specify the join condition
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Aptitude test, quant, grammer, logical

Q1. OOPS concepts like encapsulation, abstraction
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Q2. Code to print most repeated in array
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Code to print most repeated string in array
• Iterate through array and count occurrences of each string

• Store counts in a dictionary

• Find the string with the highest count
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Online sales vs offline sales

Q1. Tell me about your self
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Q2. What have you done is your internship?
Ans. 
During my internship, I worked on developing sales strategies, conducting market research, and assisting with client presentations.
• Developed sales strategies to target new clients

• Conducted market research to identify potential leads

• Assisted in creating and delivering client presentations

• Collaborated with the sales team to analyze sales data and trends
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