ZKTeco Biometrics Senior Software Engineer Interview Questions and Answers

Q1. What is ETL, and can you explain it in a structured manner?
Ans. 
ETL stands for Extract, Transform, Load. It is a process used to extract data from various sources, transform it into a consistent format, and load it into a target database or data warehouse.
• Extract: Involves extracting data from different sources such as databases, files, APIs, etc.

• Transform: Data is cleaned, validated, and transformed into a consistent format suitable for analysis.

• Load: The transformed data is loade...read more
Answered by AI
Add your answer
Q2. What is the correct structure of a DBMS diagram?
Ans. 
The correct structure of a DBMS diagram includes entities, attributes, relationships, and keys.
• Entities represent the main objects in the database (e.g. Customer, Product).

• Attributes are characteristics of entities (e.g. CustomerID, ProductName).

• Relationships show how entities are related to each other (e.g. one-to-many, many-to-many).

• Keys uniquely identify each record in a table (e.g. Primary Key, Foreign Key).
Answered by AI
Add your answer

Q1. Strengths,weakness,why do we hire you, what are your hobbies
Add your answer

Q1. Find the middle element whose left and right sum is equal
Ans. 
Iterate through array to find middle element with equal left and right sum
• Iterate through array and calculate sum of elements on left and right of each element

• Return element if left sum equals right sum

• Handle edge cases like array with less than 3 elements
Answered by AI
Add your answer

Q1. How many years of experience u hv in this field
Add your answer

Q1. Basic oops concept
Add your answer

It was a DSA based coding test with 3 questions on array ( sorting, binary search and two pointers)

Q1. OOPS, DBMS WAS ASKED
Add your answer

Basic coding questions that are available with just one google search

Basic questions on maths related parts and analysis skills

Coding questions from various Data Structure parts like linkedList stack queue

Standard DSA problems

Q1. Java questions, DBs
Add your answer

Q1. Culture fit for startup
Ans. 
Culture fit for a startup is crucial for success.
• Startup culture is often fast-paced and dynamic.

• Employees need to be adaptable and willing to take on multiple roles.

• Collaboration and teamwork are highly valued.

• Innovation and creativity are encouraged.

• Open communication and transparency are important.

• A strong work ethic and dedication are necessary.

• Risk-taking and learning from failures are embraced.

• Passion and drive f
Answered by AI
Add your answer

Q1. Leadership qualities in the current role
Ans. 
Demonstrated leadership qualities in current role
• Led a team of 5 developers to successfully complete a project ahead of schedule

• Took initiative to organize weekly team meetings to discuss progress and address any challenges

• Mentored junior team members, providing guidance and support to help them improve their skills

• Collaborated with cross-functional teams to ensure smooth coordination and effective communication

• Took ow...read more
Answered by AI
Add your answer