Iron Systems Project Manager Operations Interview Questions and Answers

Round duration - 45 minutes
Round difficulty - Medium

Timing was 12 PM. Interviewer was nice.

Q1. 
Reverse the String Problem Statement
You are given a string STR which contains alphabets, numbers, and special characters. Your task is to reverse the string.
Example:
Input:
STR = "abcde"
Output:
"e...read more
Ans. 
Reverse a given string containing alphabets, numbers, and special characters.
• Iterate through the string from end to start and append each character to a new string.

• Alternatively, use built-in functions like reverse() or slicing to reverse the string.

• Handle special characters and numbers while reversing the string.

• Ensure to consider the constraints on the length of the string and number of test cases.
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Q2. 
Move Zeros to Left Problem Statement
Your task is to rearrange a given array ARR such that all zero elements appear at the beginning, followed by non-zero elements, while maintaining the relative order of...read more
Ans. 
Rearrange an array such that all zero elements appear at the beginning, followed by non-zero elements, maintaining relative order of non-zero elements.
• Iterate through the array and maintain two pointers - one for the next position to place a zero and one for the next non-zero element.

• Swap the elements at these pointers until all zeros are moved to the left and non-zero elements are in their relative order.

• Time complexi...read more
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Q3. Write an SQL query to find the second highest salary from a table.
Ans. 
SQL query to find the second highest salary from a table
• Use the MAX() function to find the highest salary

• Use the NOT IN operator to exclude the highest salary from the results

• Order the salaries in descending order and limit the result to 1
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Pretty easy just same basic aptitude and output based questions in C/C++ language

Q1. Leetcode medium questions
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Q2. Project discussions
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Round duration - 60 Minutes
Round difficulty - Medium

Online test

Q1. MCQ Questions
Based on c++,c and java basics
Ans. 
MCQ questions based on C++, C, and Java basics.
• Understand the differences between C++, C, and Java syntax and features.

• Be familiar with basic concepts like data types, control structures, and functions.

• Practice solving MCQs to improve your understanding of the languages.
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Round duration - 150 Minutes
Round difficulty - Medium

Technical interview

Q1. 
Distinct Elements in K-Sized Windows
The task is to determine the number of distinct elements in every sliding window of size 'K' across an array 'ARR' of size 'N'. A 'K' sized window is a contiguous sequ...read more
Ans. 
Calculate the count of distinct elements in each sliding window of size 'K' across an array 'ARR'.
• Use a sliding window approach to iterate through the array and keep track of distinct elements using a hashmap or set.

• Update the count of distinct elements in each window as it slides across the array.

• Return the array detailing the count of distinct elements in each 'K' sized window for each test case.
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Q2. 
MergeSort Linked List Problem Statement
You are given a Singly Linked List of integers. Your task is to sort the list using the 'Merge Sort' algorithm.
Input:
The input consists of a single line contain...read more
Ans. 
Sort a Singly Linked List using Merge Sort algorithm.
• Implement the Merge Sort algorithm for linked lists.

• Divide the list into two halves, sort each half recursively, and then merge them.

• Use a fast and slow pointer to find the middle of the list for splitting.

• Handle the base cases of empty list or single node list.

• Example: Input: 4 3 2 1 -1, Output: 1 2 3 4
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Round duration - 20 minutes
Round difficulty - Hard

Hr interview

Generic dotnet questions mcq

Q1. .net, c# , sql , async questions
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One problem is given need to make logic and your current project details

Managerial round was taken at the end

2 data struture question advancevds i cpp

Q1. 5 dsa array string
Ans. 
Implement a data structure for storing and manipulating an array of strings.
• Use a dynamic array to store the strings.

• Implement functions for adding, removing, and accessing strings in the array.

• Consider memory management and resizing the array as needed.
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Q2. Data sturucture
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Q1. Resume based question
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60 min 60 qs and negative marking

Q1. Interview with dsa and oops questions
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Q1. Normal questions
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Difficult to answer some of DSP concepts

Should be able to answer all embedded RTOS concepts

Basic coding questions were there related to string operations

Q1. Technical questions were asked related to networking
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Q2. What is tls handshake
Ans. 
TLS handshake is the process of establishing a secure connection between a client and a server.
• TLS handshake is initiated by the client and involves a series of steps to negotiate encryption parameters and exchange cryptographic keys.

• It ensures the authenticity, integrity, and confidentiality of data transmitted over the network.

• The handshake includes the ClientHello, ServerHello, Certificate Exchange, Key Exchange, an...read more
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Q3. What happens when you hit some url in browser
Ans. 
When you hit a URL in a browser, a request is sent to the server and the server responds with the requested webpage.
• Typically, the browser sends an HTTP GET request to the server.

• The server processes the request and generates a response.

• The response may include HTML, CSS, JavaScript, and other resources needed to render the webpage.

• The browser receives the response and renders the webpage for the user to view and inter...read more
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Q4. What are different protocols you have worked on
Ans. 
I have worked on various protocols including HTTP, TCP/IP, and MQTT.
• HTTP (Hypertext Transfer Protocol) - used for communication between web browsers and servers

• TCP/IP (Transmission Control Protocol/Internet Protocol) - the foundation of the internet

• MQTT (Message Queuing Telemetry Transport) - a lightweight messaging protocol for IoT devices
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