Safexpress Softwaretest Engineer Interview Questions and Answers

Q1. What is restful api
Ans. 
RESTful API is an architectural style for designing networked applications
• REST stands for Representational State Transfer

• Uses standard HTTP methods like GET, POST, PUT, DELETE

• Resources are identified by URIs

• Stateless communication between client and server

• Responses are typically in JSON or XML format
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Q2. Bootstarp grid system
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Visual Reasoning questions

Mostly string based questions

Q1. Salary expectations
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Q2. Immediate joining
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Q1. Csharp basics and a coding questing was given to implement
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Q2. .net and angular basics questions
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Q1. Asked deeply about my resume and technologies
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Q2. Coding question to sort a given array using DSA
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Q1. General discussion on experience
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Q1. Knowledge on SQL and how to write a query
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Q2. Knowledge on DSA and coding problems to solve.
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Q3. Knowledge on APIS (structure, security etc.)
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Q1. How to identify and solve race condition.
Ans. 
Identifying and solving race conditions involves understanding concurrent execution and implementing synchronization mechanisms.
• Understand the critical sections of code where race conditions can occur

• Use synchronization mechanisms like locks, semaphores, or atomic operations to control access to shared resources

• Implement thread-safe data structures or use thread-safe libraries to avoid race conditions

• Use tools like sta...read more
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Q2. Solve an array question on finding the third largest in an unsorted array.
Ans. 
Find the third largest element in an unsorted array of strings.
• Sort the array in descending order.

• Remove duplicates if necessary.

• Return the element at index 2 as the third largest.
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Q1. Basic interview questions with project related questions
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Q1. Detailed Questions on projects
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Q1. Normal HR interview questions with casual talks
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Q1. All Java conceptual theory questions. 1. Features of JAVA 8 2.Difference between abstraction and interface. 3. Collections framework 4. Exception handling
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Q2. Try catch resource block.
Ans. 
Try catch resource block is used in Java to automatically close resources after they are no longer needed.
• Try catch resource block is used to manage resources that need to be closed after use, such as file streams or database connections.

• The resources declared within the try block are automatically closed at the end of the block, even if an exception is thrown.

• Example: try (FileInputStream fis = new FileInputStream("fi...read more
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Q3. Should an abstract class always have an abstract method
Ans. 
No, an abstract class can have concrete methods as well.
• An abstract class can have both abstract and concrete methods.

• Abstract methods are meant to be implemented by subclasses, while concrete methods can have a default implementation.

• Having only abstract methods in an abstract class is not a requirement.
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Q1. Coding question. Given an array, remove duplicates from the array. They also asked about my existing project.
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Q1. Why did you chose fedex?
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Q1. What is your knowledge about Sql ?
Ans. 
I have a good understanding of SQL and its syntax.
• Familiar with creating and modifying tables, inserting and updating data, and querying data using SELECT statements

• Knowledge of SQL functions and operators

• Experience with joins and subqueries

• Understanding of database normalization and data integrity constraints

• Proficient in using SQL in various database management systems such as MySQL, Oracle, and SQL Server
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Q2. What is your project dream
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