Axtria Lead Software Engineer Interview Questions and Answers

Q1. Strengths and weakness
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Question was on Java streams for string

Q1. Lots of questions on java, spring boot, design patterns, scalability, concurrency
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Q1. Java questions. OOPs, Multi-Threading, 1 array based program
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Q1. 1 coding question and Design question of tinyURL
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Hacker rank exam, 2 DSA coding questions

Q1. Backend questions on spring boot
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Q2. Angular routing and service
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Q1. Cultural fit question
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Q2. And prior job experience and mental ability test
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Round duration - 40 minutes
Round difficulty - Medium

The test has 3 sections :
1. Quantitative contains 20 questions. These questions are easy to me. If u practice quant, you can easily solve it.

2. Technical contains 20 questions. Some questions are on C , C++ , java outputs. Remaining are based on DSA. If u Know all the time complexities of algorithms then it is easy . In technical they gave one DSA problem.
 

3. Essay: They have given one picture and then asked to write an essay by seeing the picture.

Q1. 
Dijkstra's Algorithm for Shortest Path
Given an undirected graph with 'V' vertices labeled from 0 to V-1 and 'E' edges. Each edge has a weight that represents the distance between two nodes 'X' and 'Y'.
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Ans. 
Dijkstra's algorithm is used to find the shortest path distances from a source node to all other vertices in a graph.
• Dijkstra's algorithm is a greedy algorithm that finds the shortest path from a source node to all other nodes in a graph.

• It uses a priority queue to select the node with the smallest distance and relaxes its neighbors.

• The algorithm maintains a distance array to keep track of the shortest distances from t...read more
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Round duration - 60 minutes
Round difficulty - Easy

3 persons are there in panel. They are asking questions on basic concepts in subjects and some advanced concepts.

Q1. What is a Daemon Process?
Ans. 
A daemon process is a background process that runs continuously to perform system tasks.
• Daemon processes do not have a controlling terminal.

• They typically run in the background and perform tasks such as managing hardware devices, network services, or system maintenance.

• Examples of daemon processes include cron, sshd, and apache.

• Daemon processes are often started during system boot and run until the system is shut down.
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Q2. What are the advantages of system calls in operating systems?
Ans. 
System calls provide a way for user-level processes to interact with the operating system kernel.
• System calls allow user programs to request services from the operating system.

• They provide a secure and controlled way for applications to access system resources.

• System calls enable processes to perform tasks such as file operations, network communication, and process management.

• Examples of system calls include open(), re
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Q3. Can you explain the select() system call?
Ans. 
The select() system call is used in Unix-like operating systems to monitor multiple file descriptors for activity.
• select() allows a program to wait for multiple I/O operations to complete on multiple file descriptors.

• It takes three sets of file descriptors as arguments - readfds, writefds, and errorfds.

• The function will block until an activity is detected on one of the file descriptors or until a timeout occurs.

• select(...read more
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