Vertafore Software Engineer II Interview Questions and Answers

2 easy to moderate questions and 20 multiple choice questions related to C/C++/Netowking/System Calls/OS

Q1. Difference b/w global and static variable in C
Ans. 
Global variables are accessible throughout the program, while static variables are limited to the scope in which they are defined.
• Global variables are declared outside of any function and can be accessed by any function in the program.

• Static variables are declared within a function and retain their value between function calls.

• Example: int globalVar = 10; static int staticVar = 5;

• Example: Global variable can be accesse...read more
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Q2. Process vs Thread
Ans. 
Processes are independent instances of a program, while threads are smaller units within a process sharing resources.
• Processes have their own memory space, while threads share the same memory space within a process.

• Processes are heavyweight, requiring more resources, while threads are lightweight.

• Processes communicate with each other through inter-process communication mechanisms, while threads can communicate directly...read more
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Q3. Internal working of the segmentation fault, how the compiler knows it is a segmentation error.
Ans. 
Segmentation fault occurs when a program tries to access memory it doesn't have permission to access.
• Segmentation fault occurs when a program tries to access memory outside of its allocated space.

• Compiler detects segmentation faults by checking memory access permissions during compilation.

• Segmentation faults are typically caused by dereferencing a null pointer or accessing an out-of-bounds array element.
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Q1. How pagination work in jpa
Ans. 
Pagination in JPA allows for retrieving a subset of results from a query by specifying a limit and offset.
• Use the setFirstResult() method to specify the starting index of the results to retrieve

• Use the setMaxResults() method to specify the maximum number of results to retrieve

• Combine setFirstResult() and setMaxResults() to implement pagination in JPA queries
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Q2. How to create restful api
Ans. 
To create a RESTful API, define endpoints, use HTTP methods, handle requests and responses, and follow REST principles.
• Define endpoints for different resources (e.g. /users, /products)

• Use HTTP methods like GET, POST, PUT, DELETE for CRUD operations

• Handle requests and responses in JSON format

• Follow REST principles like statelessness, uniform interface, and client-server architecture
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