PubMatic Software Qa Automation Engineer Interview Questions and Answers

Leetcode easy-medium

Q1. What is Cyber Security and information security?
Ans. 
Cyber security is the practice of protecting systems, networks, and data from digital attacks.
• Cyber security involves implementing measures to prevent unauthorized access, data breaches, and other cyber threats.

• It includes technologies, processes, and practices designed to protect networks, devices, programs, and data from attack, damage, or unauthorized access.

• Examples of cyber security measures include firewalls, ant...read more
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Q2. What are the types of encryption?
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Types of encryption include symmetric encryption, asymmetric encryption, and hashing.
• Symmetric encryption: Uses the same key for both encryption and decryption, examples include AES and DES.

• Asymmetric encryption: Uses a pair of public and private keys for encryption and decryption, examples include RSA and ECC.

• Hashing: Converts data into a fixed-size string of bytes, examples include MD5 and SHA.
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Q1. Basic Question on Tree Traversals
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Q2. Questions of Linked List
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Question related to tree and graph

Question related to array and tree

Q1. Question related to projects, puzzles, one dsa as well
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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
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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
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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
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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
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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
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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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Networking,Operating system,Dsa,DBMS

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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