IRIS Business Services Java Developer Interview Questions, Process, and Tips

It was easy test, basic java mcq questions

Q1. Collection framework
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Q2. JDBC steps with proper explanation
Ans. 
JDBC steps involve loading the driver, establishing a connection, creating a statement, executing the query, and processing the results.
• Load the JDBC driver using Class.forName() method

• Establish a connection to the database using DriverManager.getConnection() method

• Create a statement object using the connection.createStatement() method

• Execute the query using statement.executeQuery() method

• Process the results by iterati
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Round duration - 90 minutes
Round difficulty - Medium

Q1. Cycle Detection in a Singly Linked List
You have given a Singly Linked List of integers, determine if it forms a cycle or not.
A cycle occurs when a node's next points back to a previous node in the ...read more
Ans. 
The task is to determine if a given singly linked list forms a cycle or not.
• A cycle occurs when a node's next points back to a previous node in the list.

• To solve this problem, we can use the Floyd's Cycle-Finding Algorithm.

• The algorithm uses two pointers, one moving at a normal pace and the other moving twice as fast.

• If there is a cycle, the fast pointer will eventually catch up to the slow pointer.

• If the fast pointer ...read more
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Round duration - 60 minutes
Round difficulty - Medium

Q1. Minimum Depth Of Binary Tree
You have been given a Binary Tree of integers, find the minimum depth of this Binary Tree. The minimum depth of a Binary Tree is the number of nodes along the shortest path fro...read more
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The minimum depth of a binary tree is the number of nodes along the shortest path from the root node down to the nearest leaf node.
• The minimum depth can be found by performing a breadth-first search (BFS) traversal of the binary tree

• During the BFS traversal, keep track of the current level and increment the depth by 1 for each level

• Stop the BFS traversal when a leaf node is encountered and return the depth as the minim
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Q2. Intersection Of Two Arrays
You are given two arrays 'A' and 'B' of size 'N' and 'M' respectively. Both these arrays are sorted in non-decreasing order. You have to find the ...read more
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The problem is to find the intersection of two sorted arrays.
• Use two pointers to iterate through the arrays.

• Compare the elements at the current pointers and move the pointers accordingly.

• If the elements are equal, add it to the intersection array and move both pointers.

• If the element in the first array is smaller, move the first pointer.

• If the element in the second array is smaller, move the second pointer.

• Repeat until...read more
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Q3. Operating System Question
What is the difference between a mutex and a semaphore
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A mutex is a binary semaphore used for mutual exclusion, while a semaphore is a generalized synchronization primitive.
• Mutex is used to protect a critical section of code, allowing only one thread to access it at a time.

• Semaphore is used to control access to a shared resource, allowing multiple threads to access it simultaneously.

• Mutex has ownership, meaning the thread that locks it must unlock it.

• Semaphore does not hav...read more
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Round duration - 60 minutes
Round difficulty - Easy

Q1. Technical Questions
It was a managerial round. The interviewer started by introducing himself and then asked for my introduction. We then had an in-depth discussion on Cloud Computing, its importance and di...read more
Ans. 
The interviewer asked about Cloud Computing, OSI layers, network security, and security protocols.
• Discussed the importance of Cloud Computing

• Talked about the different OSI layers

• Explored the significance of network security in today's world

• Discussed various security protocols in place

• Had a healthy and friendly discussion
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Round duration - 25 minutes
Round difficulty - Easy

Q1. Basic HR questions
The interviewer introduced himself and then asked for my introduction. He then asked me why I wanted to join F5 networks and why they should hire me. He then told me in-depth about the co...read more
Ans. 
I wanted to join F5 networks because of their strong reputation in the industry and their commitment to innovation and customer satisfaction.
• I am impressed by F5 networks' track record of delivering cutting-edge solutions to their clients.

• I believe my skills and experience align well with the company's goals and values.

• F5 networks' focus on customer satisfaction resonates with my own commitment to providing excellent s...read more
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