DATAMARK BPO SERVICE (P) LTD Network Engineer Interview Questions and Answers

1-hour exam, few math questions, and few technical were asked, and all were MCQs

Very general topics were asked to check our communication skills

Q1. Intro, DBMS, SQL questions, OOPs concepts, and real-life examples, About the project I worked in, were asked. Most of the questions are based on the resume.
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Q2. OOPs- inheritance, encapsulation code on it overloading, overriding concept and coding question
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Q3. Coding questions on strings
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Round duration - 126 minutes
Round difficulty - Hard

This round consist of coding questions as well as mcqs based on aptitude as well as some domain sections. This round is hard.

Q1. 
Maximum Path Sum in a Matrix
Given an N*M matrix filled with integer numbers, determine the maximum sum that can be obtained from a path starting from any cell in the first row to any cell in the last row...read more
Ans. 
Find the maximum sum path in a matrix from top row to bottom row by moving down or diagonally.
• Use dynamic programming to keep track of maximum sum at each cell.

• At each cell, consider the maximum sum from the cell above, left diagonal, and right diagonal.

• Add the current cell value to the maximum of the three possibilities.

• Repeat this process for all cells in the matrix to find the maximum sum path.
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Q2. 
Boolean Matrix Transformation Challenge
Given a 2-dimensional boolean matrix mat of size N x M, your task is to modify the matrix such that if any element is 1, set its entire row and column to 1. Specifi...read more
Ans. 
Modify a boolean matrix such that if any element is 1, set its entire row and column to 1.
• Iterate through the matrix to find elements with value 1

• Store the row and column indices of these elements

• Update the entire row and column for each element found to be 1
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Round duration - 45 minutes
Round difficulty - Easy

In this round the interviewer ask few questions related to domain and at last he ask some behavioral questions.

Q1. 
Intersection of Linked List Problem
You are provided with two singly linked lists containing integers, where both lists converge at some node belonging to a third linked list.
Your task is to determine t...read more
Ans. 
Find the node where two linked lists merge, return -1 if no merging occurs.
• Traverse both lists to find the lengths and the last nodes

• Align the starting points of the lists by adjusting the pointers

• Traverse both lists simultaneously until a common node is found
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Q1. What are the responsibilities of a Data Analyst?
Ans. 
Data Analysts are responsible for collecting, processing, and analyzing data to help organizations make informed decisions.
• Collecting and organizing data from various sources

• Cleaning and processing data to ensure accuracy and consistency

• Analyzing data using statistical techniques and tools

• Creating visualizations and reports to present findings

• Interpreting data to provide insights and recommendations

• Collaborating with s...read more
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Q2. Software engineer
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Q1. Tell me about your self
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Q2. What about you usushshsihsvsgs shsbshsis shsjsbsbs dude see dhsb
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Q1. What role your Company
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Q2. Tell me brief hsjsisbdbs shshsvsvg
Ans. 
The question seems to be incomplete or garbled, possibly a technical issue.
• Ask for clarification or request the question to be repeated

• Politely mention that the question seems to be incomplete or unclear
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Q1. What is your current CTC
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Q2. Tell me your address location
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Share current discussions for you position

Q1. About HT and LT Transmission , Distribution and Backup Systems
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Q2. About work place and culture
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Q1. How to maintaine vil mobile network?
Ans. 
Maintaining a mobile network involves regular monitoring, troubleshooting, and updating of network equipment and software.
• Regularly monitor network performance and troubleshoot any issues that arise

• Update network equipment and software to ensure optimal performance and security

• Implement security measures to protect against cyber threats

• Perform regular maintenance tasks such as cleaning equipment and checking for physic...read more
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Q2. Mobile Network is maintained issues or hardware problems & Software problems that is resolved to Snoc,Tnoc, L2 team or power infraissues by mail or call.
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Q1. How to restored network?
Ans. 
To restore a network, identify the issue, troubleshoot, implement a solution, and test the network.
• Identify the issue causing the network problem

• Troubleshoot the network components to pinpoint the exact cause

• Implement a solution to fix the network issue

• Test the network to ensure the problem is resolved
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Q2. Update the mw configuration as pr LB plan and passing through the VLAN by LAN or WAN..
Ans. 
To update the mw configuration as per LB plan and pass through the VLAN by LAN or WAN, you need to configure the load balancer settings and ensure proper routing.
• Configure the load balancer to distribute traffic evenly across multiple servers

• Update the mw configuration to align with the load balancer plan

• Ensure VLAN settings are correctly configured for LAN or WAN transmission
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Q1. Want About your salary?
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Q2. My salary is 4.2 LPA but expected by my work experience of profile role.
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Q1. Explain collection framework and uses
Ans. 
Collection framework is a set of interfaces and classes in Java that provide a way to store and manipulate groups of objects.
• Provides interfaces like List, Set, Map for storing collections of objects

• Includes classes like ArrayList, HashSet, HashMap for implementing these interfaces

• Allows for easy manipulation, sorting, searching, and iteration of collections

• Used in various applications like data processing, data storag
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Q2. Explain springboot and it's annotation
Ans. 
Spring Boot is a Java-based framework used for creating standalone, production-grade Spring-based applications.
• Spring Boot simplifies the process of creating Spring applications by providing defaults for configuration and eliminating the need for XML configuration files.

• Annotations in Spring Boot are used to simplify the configuration of Spring applications by providing metadata about the application.

• Examples of annota...read more
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Q1. RF Parameters,KPI implementation,UL DL Throughput,SINR,RARP
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Q1. Salary Discussion and Documents
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Q1. What is a node?
Ans. 
A node is a device or data point in a network that can send, receive, or forward data.
• Nodes can be computers, servers, routers, switches, or any other network device.

• Nodes are connected to each other through links or connections.

• In a network diagram, nodes are represented by circles or boxes with labels.

• Examples of nodes include laptops, smartphones, printers, and network switches.
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Q2. What is a link?
Ans. 
A link is a connection between two devices that allows them to communicate and share data.
• A link can be physical, such as an Ethernet cable connecting two computers.

• A link can also be virtual, such as a VPN connection over the internet.

• Links can be wired or wireless, depending on the technology used.

• Links are essential for networking and communication between devices.
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Q3. Defined network?
Ans. 
A network is a collection of computers, servers, mainframes, network devices, and other devices connected to one another.
• A network allows devices to communicate with each other and share resources.

• Networks can be classified based on their size (LAN, WAN, MAN) or their connection method (wired or wireless).

• Examples of networks include the internet, intranets, and extranets.
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Q4. What is a gateway of route?
Ans. 
A gateway of route is a device or software that connects different networks, allowing communication between them.
• A gateway of route acts as an entry and exit point for data packets traveling between networks

• It can perform tasks such as protocol translation, packet filtering, and routing

• Examples include routers, firewalls, and proxy servers
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Q5. Types of network names?
Ans. 
Types of network names include SSID, domain name, hostname, and workgroup name.
• SSID (Service Set Identifier)

• Domain name

• Hostname

• Workgroup name
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