Quest Global Senior Software Engineer 2 Interview Questions and Answers

You need to give a coding test which is for 4.5 hours, where you are given a scenarios and you need to create API to fetch the response from an external API and according parse the response for whatever you need and perform some business logic for same.

Q1. Technical questions based on the code you had submitted earlier, and then again they check you for technical skills based on patterns, junit, threading, security, deployments etc
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Q2. What is the need for @Service annotation?
Ans. 
The @Service annotation is used in Spring framework to indicate that a class is a service component.
• Used to mark a class as a service component in Spring framework

• Helps in auto-detection and auto-configuration of Spring beans

• Facilitates dependency injection and inversion of control
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Q1. Here you are given a particular scenario and based on that you need to draw system diagram for same and explain them about why and what is needed.
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Q2. Draw a system diagram for ecommers system to place an order and get order history for a particular customer
Ans. 
System diagram for e-commerce order placement and history retrieval
• Frontend: Customer interface for browsing products, adding to cart, and placing orders

• Backend: Order processing system to handle order placement, payment processing, and order fulfillment

• Database: Store customer information, order details, and order history for retrieval

• APIs: Communication between frontend, backend, and database for seamless order proce...read more
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Q1. This round is to check what kind of behavior you showcase in certain situations and what kind of challenges you face in current team structure
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Q1. This round again judges you on cultural fitment, where they check what do you currently do and what kind of challenges or conflicts you face in team structure.
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Arrays based 1 hours

Sorting array, streamapi example etc

Q1. Interview Questions about Java, Spring boot and other technical frameworks you worked on
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Q2. Implement Binary search tree
Ans. 
Binary search tree is a data structure where each node has at most two children, with the left child being less than the parent and the right child being greater.
• Start with a root node and insert new nodes by comparing values and traversing left or right accordingly.

• Implement functions for insertion, deletion, search, and traversal (inorder, preorder, postorder).

• Ensure the tree remains balanced to maintain efficient se
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Q3. How hash map works in java
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HashMap in Java is a data structure that stores key-value pairs and allows for fast retrieval of values based on keys.
• HashMap uses hashing to store key-value pairs in an array of linked lists.

• It uses the hashCode() method of keys to determine the index where the value will be stored.

• If two keys have the same hashCode, they are stored in the same linked list at that index.

• HashMap allows null keys and values, but only on...read more
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Q1. Salary discussion
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Average to easy difficulty level.

Q1. Java code of string manipulation
Ans. 
String manipulation in Java involves various methods like substring, concat, replace, etc.
• Use substring() to extract a part of the string

• Use concat() to concatenate two strings

• Use replace() to replace a specific character or substring in a string
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Q2. What is the Java code for various types of sorting algorithms?
Ans. 
Various sorting algorithms in Java code
• Bubble Sort: int[] arr = {5, 2, 8, 1, 3}; Arrays.sort(arr);

• Selection Sort: int[] arr = {5, 2, 8, 1, 3}; Arrays.sort(arr);

• Insertion Sort: int[] arr = {5, 2, 8, 1, 3}; Arrays.sort(arr);

• Merge Sort: int[] arr = {5, 2, 8, 1, 3}; Arrays.sort(arr);

• Quick Sort: int[] arr = {5, 2, 8, 1, 3}; Arrays.sort(arr);
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Q3. Sql query and topics related to joins.
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Q1. About yourself and family
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Q2. What do you know about the company?
Ans. 
The company is a leading software development firm specializing in creating innovative solutions for various industries.
• Specializes in creating innovative software solutions

• Works with clients from various industries

• Known for high-quality and reliable products

• Has a strong team of software engineers and developers
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Q3. Can you provide examples of real-life scenarios where you handled conflicts with either a colleague or a manager?
Ans. 
Handled conflicts by addressing issues directly, seeking compromise, and maintaining professionalism.
• Addressed a disagreement with a colleague by scheduling a one-on-one meeting to discuss concerns and find common ground.

• Resolved a conflict with a manager by actively listening to their perspective, providing feedback, and working together to find a solution.

• Maintained professionalism during conflicts by staying calm, r...read more
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Q4. What actions would you take if your manager does not approve your product idea, and how would you attempt to persuade them?
Ans. 
I would gather more data to support my idea, present a compelling case to my manager, and be open to feedback and compromise.
• Gather data to support the idea, such as market research, user feedback, or cost-benefit analysis.

• Prepare a well-structured presentation highlighting the potential benefits of the product idea.

• Listen to the manager's concerns and feedback, and be open to making adjustments or compromises.

• Seek sup...read more
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Topics on electronics and C programming

Q1. Questions on simple python programs and electronics basics
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Q2. Question on simple linked list
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Q3. Program for fibonacci seq
Ans. 
Program to generate Fibonacci sequence
• Start with two initial numbers, 0 and 1

• Add the previous two numbers to get the next number in the sequence

• Repeat this process to generate the Fibonacci sequence

• Example: 0, 1, 1, 2, 3, 5, 8, 13, ...
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Q4. Questions on mosfets
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Q1. Why you would like to join the company, and other questions
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Q1. Explain over all experience
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Q2. Asked question on Core and advance java topic
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Q1. Some advance topic of Java
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Q2. DSA
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Q1. Salary expectation
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Q2. Relocation
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