Zendesk Interview Questions and Answers

Q1. What are joins in SQL, and what are the different types?
Ans. 
Joins in SQL are used to combine rows from two or more tables based on a related column between them.
• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

• INNER JOIN returns rows when there is at least one match in both tables.

• LEFT JOIN returns all rows from the left table and the matched rows from the right table.

• RIGHT JOIN returns all rows from the right table and the matched rows from the left tabl...read more
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Q2. What is the method to find the third highest salary in a dataset?
Ans. 
Use the SQL query with ORDER BY and LIMIT to find the third highest salary.
• Use the SQL query: SELECT DISTINCT Salary FROM Employees ORDER BY Salary DESC LIMIT 2, 1

• The above query will return the third highest salary from the 'Employees' table

• Make sure to replace 'Employees' and 'Salary' with the appropriate table and column names
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Q1. How do you manage multiple clients simultaneously?
Ans. 
I prioritize tasks, set clear expectations, utilize time management tools, and communicate effectively.
• Prioritize tasks based on urgency and importance

• Set clear expectations with clients regarding response times and availability

• Utilize time management tools such as calendars and task lists

• Communicate effectively with clients to provide updates and manage expectations
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Q2. How do you determine which issue to prioritize when faced with multiple problems?
Ans. 
I prioritize issues based on impact, urgency, and complexity.
• Assess the impact of each issue on the system or users

• Consider the urgency of resolving each issue

• Evaluate the complexity of fixing each issue

• Prioritize critical issues that have high impact, urgency, and low complexity

• Create a priority list based on these factors
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Q1. Support Role Questions 1) Like explaining a case which was done in your previous role and experience
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Q2. Questions on Javascript
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Q1. Technical Interview questions on Javascript, HTML, CSS and behavioural
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Q1. Manager Questions based on Position and previous work experience.
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Basic Python, SQL, and Bash questions

Q1. SQL questions with operations that include changing from string to array. Tip: stick to RDBMS-specific dialects only (like Postgres), I used Spark SQL
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Q2. Simple Python questions with a follow-up to optimise it
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Q3. Bash script-based questions, are pretty basic.
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Q4. Data pipeline design and best practices.
Ans. 
Data pipeline design involves creating a system to efficiently collect, process, and analyze data.
• Understand the data sources and requirements before designing the pipeline.

• Use tools like Apache Kafka, Apache NiFi, or AWS Glue for data ingestion and processing.

• Implement data validation and error handling mechanisms to ensure data quality.

• Consider scalability and performance optimization while designing the pipeline.

• Doc...read more
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Q1. Easy to medium Leetcode-based question. With moderate difficulty.
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Q2. Simple Python-based question with optimisation.
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Q3. Design specific questions based on Data pipelines.
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Q1. SQL-based question with moderate difficulty.
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Q2. Python-based questions, follow questions with some optimisations.
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Q3. Bash-script based round.
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