Dixit Infotech Services Technical Support Engineer Interview Questions and Answers

Q1. What are operating systems, and what are the different types of operating systems?
Ans. 
Operating systems manage computer hardware and software, providing a user interface and enabling application execution.
• 1. System Software: Manages hardware and software resources (e.g., Windows, macOS, Linux).

• 2. Application Software: Performs specific tasks for users (e.g., Microsoft Office, Adobe Photoshop).

• 3. Real-Time Operating Systems (RTOS): Used in embedded systems for time-sensitive tasks (e.g., VxWorks, FreeRTO...read more
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Q2. What is the difference between LAN and Wi-Fi?
Ans. 
LAN is a wired network for local devices, while Wi-Fi is a wireless technology for connecting devices to a network.
• LAN (Local Area Network) typically uses Ethernet cables to connect devices, providing stable and high-speed connections.

• Wi-Fi (Wireless Fidelity) allows devices to connect to a network without physical cables, using radio waves.

• LAN is often used in offices or homes for desktop computers, printers, and serv...read more
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Q3. What are the main aspects you would like to discuss regarding the COVID-19 pandemic?
Ans. 
Discussing the COVID-19 pandemic involves its impact on health, economy, technology, and workplace dynamics.
• Health Impact: Discuss the strain on healthcare systems and the importance of vaccinations.

• Economic Consequences: Explore job losses and shifts in market dynamics, such as the rise of e-commerce.

• Remote Work: Highlight the transition to remote work and its effects on productivity and work-life balance.

• Technology A...read more
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Q1. What is bios explain
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Q2. Explain cloud service providers
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Round duration - 40 minutes
Round difficulty - Medium

Asked about time complexity of algorithm, puzzles, DBMS, cutting edge technologies etc. What are indexes?

Q1. 
Flip Bits Problem Explanation
Given an array of integers ARR of size N, consisting of 0s and 1s, you need to select a sub-array and flip its bits. Your task is to return the maximum count of 1s that can b...read more
Ans. 
Given an array of 0s and 1s, find the maximum count of 1s by flipping a sub-array at most once.
• Iterate through the array and keep track of the maximum count of 1s obtained by flipping a sub-array.

• Consider flipping a sub-array from index i to j and calculate the count of 1s in the resulting array.

• Return the maximum count of 1s obtained by flipping a sub-array at most once.
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Round duration - 20 minutes
Round difficulty - Medium

Asked 1 standard algorithm

Q1. 
Number of Islands Problem Statement
You are provided with a 2-dimensional matrix having N rows and M columns, containing only 1s (land) and 0s (water). Your goal is to determine the number of islands in t...read more
Ans. 
Count the number of islands in a 2D matrix of 1s and 0s.
• Iterate through the matrix and perform depth-first search (DFS) to find connected 1s.

• Mark visited cells to avoid redundant traversal.

• Increment island count whenever a new island is encountered.
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