ZKTeco Biometrics Technical Support Engineer Interview Questions and Answers

Page development using a framework you are familiar with.

All the languages you have mentioned.

Q1. Compensation and other details
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Aptitude test covering all technical questions

Q1. Profile related technical
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Q1. Salary negotiation and policy brief
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Q2. Salary negotiation and policy brief given
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Q1. Threads vs process
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Threads are lightweight processes within a single process, sharing memory space, while processes are independent instances of a program with their own memory space.
• Threads share memory space within a process, allowing for efficient communication and data sharing.

• Processes have their own memory space, making them more isolated and secure.

• Threads are faster to create and switch between compared to processes.

• Processes are...read more
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Q2. Thread synchronization program using semaphore/mutex
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Thread synchronization using semaphore/mutex in programming
• Use semaphores to control access to shared resources among multiple threads

• Mutex can be used to ensure only one thread can access a resource at a time

• Implement a program where threads wait for a semaphore signal before accessing a shared resource
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Aptitude followed by core C++ questions.

Q1. What are the expectations
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Expectations for a Senior Software Engineer
• Strong technical skills and expertise in relevant programming languages and technologies

• Ability to lead and mentor junior team members

• Experience in designing and implementing complex software systems

• Excellent problem-solving and analytical skills

• Strong communication and collaboration skills
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Q2. Why you want to join
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Q1. Print the largest string from the given 5 strings
Ans. 
Find the largest string from a given array of 5 strings
• Iterate through the array of strings and compare the length of each string

• Keep track of the largest string found so far

• Return the largest string at the end
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Q2. Check if the required dropdown option is displayed or not
Ans. 
Use Selenium WebDriver to locate the dropdown element and check if the required option is displayed
• Locate the dropdown element using Selenium WebDriver

• Use the Select class to interact with the dropdown

• Verify if the required option is displayed using isSelected() method
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Basic coding questions that are available with just one google search