Cornerstone OnDemand QA QC Engineer Interview Questions and Answers

Time and Speed, Percentages, Averages, Ratio and Proportion, Time and Work etc.

Platform was Mettle Assessment, Topics were Tree and Binary Search

Work from office vs Work from Home

Q1. Multi-threading, Communication between thread, dynamic programming, trees, sorting techniques.
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Q2. What is TCP, UDP, Difference between TCP and UDP, Three way handshaking problem, socket programming, HTTP Protocol.
Ans. 
TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) are protocols used for data transmission over networks.
• TCP is a connection-oriented protocol that guarantees reliable delivery of data.

• UDP is a connectionless protocol that does not guarantee reliable delivery of data.

• The main difference between TCP and UDP is that TCP provides reliable, ordered, and error-checked delivery of data, while UDP does not.

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Q3. Write code to print bottom view of Binary Search Tree
Ans. 
Print the bottom view of a Binary Search Tree.
• Use a map to store the horizontal distance and the bottom-most node at that distance.

• Traverse the tree in level order and update the map with each node's horizontal distance and level.

• Print the nodes in the map in ascending order of their horizontal distance.
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Q1. Why you want to work from office
Ans. 
I believe working from the office allows for better collaboration and communication with colleagues.
• Better collaboration and communication with colleagues

• Opportunity for face-to-face interactions

• Easier access to resources and equipment

• Faster problem-solving through immediate discussions

• Building stronger relationships with team members
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Q2. Why should we hire you
Ans. 
I have the technical skills, experience, and passion for software engineering that make me a valuable asset to your team.
• I have a strong background in computer science and software development

• I have experience working on various software projects and have a proven track record of delivering high-quality code

• I am a quick learner and can adapt to new technologies and programming languages

• I am a team player and can effect...read more
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Q3. Tell any moment when you felt motivated and depressed at same time. etc
Ans. 
Yes
• When I received a promotion at work but also had to deal with the loss of a loved one

• When I achieved a personal goal but also faced criticism from others

• When I received positive feedback on a project but also experienced imposter syndrome
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Q1. Why you choose to work in qa
Ans. 
I chose to work in QA because I enjoy ensuring quality and improving processes.
• I have a keen eye for detail and enjoy finding and fixing bugs in software.

• I like the challenge of testing different scenarios and ensuring the product meets requirements.

• I find satisfaction in improving processes and helping to deliver a high-quality product to customers.
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Q2. In which technologys you worked
Ans. 
I have worked with technologies such as Selenium, JUnit, TestNG, Jenkins, and Git.
• Selenium for automated testing of web applications

• JUnit and TestNG for writing and executing test cases

• Jenkins for continuous integration and continuous deployment

• Git for version control and collaboration
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MCQ questions on Linux Networking and SQL

Q1. Questions about Linux Sql and Networking
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Q2. Questions about the project
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Q1. Two sum of an array
Ans. 
Find two numbers in an array that add up to a specific target value.
• Use a hashmap to store the difference between the target value and each element in the array.

• Iterate through the array and check if the current element's complement exists in the hashmap.

• Return the indices of the two numbers that add up to the target value.
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Q2. Stack balance parenthesis
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Q1. Is circular loop is there in a linkedList
Ans. 
No, a circular loop is not present in a linked list.
• A linked list does not have a circular loop by default.

• If a linked list has a circular loop, it is considered a circular linked list.

• Circular linked lists can be detected using Floyd's Cycle Detection Algorithm.
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Q2. How to identify the duplicates in circular linkedList
Ans. 
To identify duplicates in a circular linked list, use a hash set to keep track of visited nodes.
• Traverse the circular linked list while adding each node to a hash set.

• If a node is already in the hash set, it is a duplicate.

• Consider edge cases such as an empty list or a list with only one node.
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Q1. Oops concepts in c#
Ans. 
Oops concepts in C# include inheritance, polymorphism, encapsulation, and abstraction.
• Inheritance allows a class to inherit properties and behavior from another class.

• Polymorphism allows objects to be treated as instances of their parent class.

• Encapsulation hides the internal state of an object and only exposes necessary functionality.

• Abstraction focuses on the essential characteristics of an object while hiding irrele
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Q2. Automation Framework related questions
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Q1. What is Test case
Ans. 
A test case is a set of conditions or variables under which a tester will determine whether a system under test satisfies requirements or works correctly.
• Test cases are designed to validate the functionality of a system.

• They include steps to be executed, expected results, and actual results.

• Test cases can be automated or manual.

• Examples: Login functionality, search feature, checkout process.
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Q2. Diffrence between validation and verification in testing
Ans. 
Validation ensures the right product is built, while verification ensures the product is built right.
• Validation confirms that the product meets the customer's requirements and expectations.

• Verification ensures that the product conforms to its specified requirements.

• Validation answers the question 'Are we building the right product?' while verification answers 'Are we building the product right?'

• Examples: Validating tha...read more
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Q1. About project and details of project
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Q2. Some puzzles to test the logic reasoning
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1 hr test, simple aptitude questions

Simple coding questions

Q1. Reverse the string
Ans. 
Reverse a given string
• Iterate through the string from end to start and append each character to a new string

• Use built-in functions like reverse() in Python or StringBuilder.reverse() in Java

• Convert the string to an array, reverse the array, and convert it back to a string
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Q2. Basic Networking questions
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Q3. Questions on working of jvm
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