ANZ Operations & Technology Interview Questions and Answers

Q1. Write a query to get the shaded part of a venn diagram having 3 tables
Ans. 
To find the shaded area in a Venn diagram of three tables, use SQL to identify unique and overlapping records.
• Identify Unique Records: Use LEFT JOIN to find records in one table not present in the others.

• Find Overlapping Records: Use INNER JOIN to get records that exist in all three tables.

• Combine Results: Use UNION to combine unique and overlapping records to represent the shaded area.

• Example Query: SELECT * FROM Tabl...read more
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Q2. Optimise this query
Ans. 
Optimize SQL queries for better performance and efficiency.
• Use indexes on columns that are frequently queried or filtered. Example: CREATE INDEX idx_column ON table_name(column);

• Avoid SELECT *, specify only the columns needed. Example: SELECT column1, column2 FROM table_name;

• Use JOINs instead of subqueries when possible for better performance. Example: SELECT a.column1 FROM table_a a JOIN table_b b ON a.id = b.a_id;

• Lim...read more
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Q3. Write a python program to get the string with maximum length
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This Python program identifies the longest string from an array of strings, returning it efficiently.
• Input Array: The program takes an array of strings as input, e.g., ['apple', 'banana', 'cherry', 'date'].

• Finding Maximum: It uses the built-in max() function with the key parameter set to len to find the longest string.

• Output: The program returns the longest string, e.g., 'banana' from the input array.

• Edge Cases: It han...read more
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Hacker rank test - had to complete 2 python coding problems in an hour.

Q1. Tell me about yourself
Ans. 
I am a dedicated Security Engineer with a strong background in network security and threat analysis.
• Experienced in implementing and maintaining security measures to protect networks and systems

• Skilled in conducting security assessments and identifying vulnerabilities

• Proficient in incident response and forensic analysis

• Familiar with security tools such as SIEM, IDS/IPS, and endpoint protection solutions
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Q2. Tell me about past projects.
Ans. 
Developed a network security system for a large financial institution.
• Implemented firewalls, intrusion detection systems, and encryption protocols to protect sensitive data

• Conducted regular security audits and penetration testing to identify vulnerabilities

• Collaborated with cross-functional teams to ensure compliance with industry regulations
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Q3. Have you ever been in a situation where you had to deal with a conflict at workplace.
Ans. 
Yes, I have experience dealing with conflicts in the workplace.
• I have encountered conflicts related to project deadlines and resource allocation.

• I have resolved conflicts by facilitating open communication and finding mutually beneficial solutions.

• I have also utilized conflict resolution techniques such as active listening and compromise.

• One example is when team members disagreed on the approach to a project, I organiz...read more
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Q1. Data Engineering Concepts
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Q2. Build ETL pipeline on cloud
Ans. 
ETL pipeline on cloud involves extracting data from various sources, transforming it, and loading it into a cloud-based data warehouse.
• Use cloud-based ETL tools like AWS Glue, Google Cloud Dataflow, or Azure Data Factory to extract, transform, and load data.

• Design the pipeline to handle large volumes of data efficiently and securely.

• Utilize serverless computing and auto-scaling capabilities of cloud platforms to optimi...read more
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Q3. Writing sql queries to solve the logic
Ans. 
SQL queries can be crafted to manipulate and retrieve data based on specific logic requirements.
• Use SELECT statements to retrieve data from tables. Example: SELECT * FROM employees;

• Utilize WHERE clauses to filter results. Example: SELECT * FROM orders WHERE status = 'shipped';

• Implement JOINs to combine data from multiple tables. Example: SELECT a.name, b.order_date FROM customers a JOIN orders b ON a.id = b.customer_id...read more
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Q4. Data Modelling techniques
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Data modelling techniques involve creating a visual representation of data relationships and structures.
• Identifying entities and their relationships

• Creating entity-relationship diagrams

• Normalizing data to reduce redundancy

• Using tools like ERwin, Visio, or Lucidchart

• Implementing data models in databases
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Q5. Performance Optimisation
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Q6. Data Warehouse implementation
Ans. 
Data Warehouse implementation involves designing, building, and maintaining a centralized repository for storing and analyzing data.
• Designing the data warehouse schema to meet business requirements

• Extracting, transforming, and loading data from various sources into the warehouse

• Implementing data quality processes to ensure accuracy and consistency

• Creating data models and reports for analysis and decision-making

• Optimizi...read more
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Iq questions for all and group discussion

Q1. About the ms SQL server database
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Q2. Query writing and performance tuning and Optimization
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Q1. Scenario based questions on technical
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Q2. About past projects experience and challenges
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Q1. Scenario based question are asked
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Q1. Salary discussion, expectation etc
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