Wavicle Data Solutions Data Engineer Interview Questions and Answers

Q1. How to configure vpn
Ans. 
To configure a VPN, you need to set up a VPN server, create user accounts, configure client devices, and establish secure connections.
• Set up a VPN server using software like OpenVPN or Windows Server

• Create user accounts with unique credentials for accessing the VPN

• Configure client devices to connect to the VPN server using the provided credentials

• Establish secure connections by encrypting data transmitted over the VPN
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Q2. System slowness how to resolve
Ans. 
To resolve system slowness, check for hardware issues, optimize software, update drivers, and monitor resource usage.
• Check for hardware issues such as low memory or CPU usage

• Optimize software by removing unnecessary programs or services

• Update drivers for hardware components

• Monitor resource usage to identify bottlenecks
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Q1. Coding Round, Design Pattern
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Q1. Coding, Design Pattern
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Q1. Coding, SOLID, System Design
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Test was quiet easy and got selected after making 1 question wrong

Q1. Had this round with the manager and he asked me some logical questions and as I was a fresher no previous experience questions were asked.
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Q1. What is manual testing
Ans. 
Manual testing is the process of manually testing software for defects, errors, and bugs.
• Manual testing involves testers executing test cases without the use of automation tools.

• Testers follow predefined test cases to ensure the software functions correctly.

• Manual testing is time-consuming but allows for human intuition and creativity in finding bugs.

• Examples of manual testing include exploratory testing, ad-hoc testin
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Q2. What is black box and white box testing
Ans. 
Black box testing focuses on testing the functionality of a software without knowing its internal code, while white box testing involves testing the internal code structure.
• Black box testing is based on external expectations and specifications

• White box testing is based on internal code structure and logic

• Black box testing is also known as functional testing

• White box testing is also known as structural testing

• Example: I...read more
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Q3. Explain severity and priority
Ans. 
Severity and priority are used to classify the importance and urgency of issues in software development.
• Severity refers to the impact of an issue on the system or business.

• Priority refers to the urgency of fixing an issue.

• Severity is usually categorized as low, medium, or high.

• Priority is usually categorized as low, medium, or high.

• For example, a critical bug that causes the system to crash would have high severity and
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Q4. Explain your project
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Q1. Explain your last project
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Q2. Write test cases
Ans. 
Writing test cases for software engineer position
• Test case for login functionality: verify valid credentials login successfully, verify invalid credentials show error message

• Test case for search functionality: verify search results display correctly, verify no results message shown for invalid search

• Test case for checkout process: verify items added to cart correctly, verify payment process completes successfully
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Q3. What is QA and QC
Ans. 
QA stands for Quality Assurance and involves the process of ensuring quality in software development. QC stands for Quality Control and involves the process of verifying quality in the final product.
• QA focuses on preventing defects in the software development process

• QC focuses on identifying defects in the final product

• QA involves processes like code reviews, unit testing, and continuous integration

• QC involves processe...read more
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Q4. What is defect cascading
Ans. 
Defect cascading is when a defect in one part of the software causes defects in other parts.
• Occurs when a defect in one module goes undetected and affects other modules

• Can lead to a chain reaction of defects throughout the software

• Often results from poor testing practices or lack of communication among team members
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Q5. What is defect seeding
Ans. 
Defect seeding is the intentional introduction of defects into a software system to evaluate the effectiveness of testing processes.
• Defect seeding helps in identifying weaknesses in the testing process

• Common techniques include adding bugs to the codebase or injecting faults into the system

• It is used to measure the thoroughness and efficiency of testing
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Q6. What is defect life cycle
Ans. 
Defect life cycle is the process of identifying, reporting, fixing, retesting, and closing software bugs.
• Defect identification: Bugs are found during testing or by users.

• Defect reporting: Bugs are documented in a bug tracking system.

• Defect fixing: Developers address and resolve the reported bugs.

• Defect retesting: Testers verify that the bug is fixed.

• Defect closing: Once verified, the bug is marked as closed.
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Q1. Basics to advance concepts of Cloud majorly AWS, Azure. Networking concepts like IP classes, subnetting, vnet etc. Previous project experience in details. How do you manage specific scenario. Real time que...read more
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Q2. If you worked on the technology then you know the answers.
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