MongoDB SDE (Software Development Engineer) Interview Questions and Answers

Q1. What technologies did I work on and some basic questions related to it.
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Q1. Technology-related questions and previous project-related questions.
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Q1. This was the manager round he asked me previous project-related questions like application architecture.
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Q1. Basic questions like relocation and compensation.
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Q1. It was online technical interview round with some good java coding programs. Not as tough but as expected for a mid level experience programmer. String Arrays other
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Q1. Java programming interview with some advance level programming questions BDD UI Automation Stack Algorithms String Arrays etc
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Q1. Linux Java Framework level questions
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Q1. 9 questions were there including sql, coding ,and few mcqs
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Q1. One questions based on Convex hull
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Q1. How is kubernetes cluster is exposed to internet ?
Ans. 
Kubernetes cluster can be exposed to the internet using various methods.
• One way is to use a LoadBalancer service type to expose the cluster to the internet.

• Another way is to use an Ingress controller to route traffic from the internet to the cluster.

• A third way is to use a NodePort service type to expose the cluster to the internet.

• It is important to secure the cluster by using authentication and authorization mechanis...read more
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Q2. What is Ingress? What is Prometheus ?What is Grafana?
Ans. 
Ingress is a Kubernetes resource that manages external access to services. Prometheus is a monitoring system and Grafana is a visualization tool.
• Ingress is used to route external traffic to the appropriate Kubernetes service

• Prometheus is used to collect and store metrics from various sources

• Grafana is used to visualize the collected metrics in a user-friendly way

• Ingress can be configured to use different load balancing...read more
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They ask us 40 mcqs and 2 coding questions. Mcqs are from networking,OS,DS,Ada and also have questions of general aptitude like direction,blood relation. Coding question are not easy both the questions are from Graph.

Q1. Subnetting, Supernetting,IPv4,Linkedlist,
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Q2. Find unique character from a string and optimize it
Ans. 
Find unique character from a string and optimize it
• Use a hash table to store the frequency of each character in the string

• Iterate through the hash table to find the character with frequency 1

• If there are multiple characters with frequency 1, return the first one

• Optimization: Stop iterating through the hash table once a character with frequency 1 is found
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They give me a scenario like you have to go from place A to place B then what should You consider.

Q1. Explain linked list reversal ways, explain rabbit mq
Ans. 
Explanation of linked list reversal and RabbitMQ
• Linked list reversal can be done iteratively or recursively

• Iterative reversal involves changing the pointers of each node to point to the previous node

• Recursive reversal involves calling the function recursively on the next node and changing its pointer to the current node

• RabbitMQ is a message broker that allows for asynchronous communication between applications

• It uses a...read more
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Q2. Design patterns es saga
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Round duration - 15 minutes
Round difficulty - Easy

Video Submission Round

Q1. What was the topic of the video you had to submit for your assignment?
Ans. 
The topic of the video I submitted for my assignment was the impact of renewable energy on reducing carbon emissions.
• Discussed various sources of renewable energy such as solar, wind, and hydro power

• Highlighted the benefits of transitioning to renewable energy for the environment and economy

• Provided examples of countries successfully implementing renewable energy initiatives
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Round duration - 60 minutes
Round difficulty - Medium

It was around 4-5 o' clock in evening.

Q1. 
Covid Vaccination Distribution Problem
As the Government ramps up vaccination drives to combat the second wave of Covid-19, you are tasked with helping plan an effective vaccination schedule. Your goal is...read more
Ans. 
Maximize vaccines administered on a specific day while following certain rules.
• Distribute vaccines evenly over the specified number of days.

• Ensure the difference in vaccines between consecutive days is not more than 1.

• Maximize the number of vaccines administered on the given day.

• Keep track of the total number of vaccines administered each day.

• Return the maximum number of vaccines administered on the specified day.
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Round duration - 60 Minutes
Round difficulty - Easy

It was the First Interview round of the shortlisted students from coding round.
It was the Technical Round.

Q1. 
Pattern Search in Strings
Given two strings S and P consisting of lowercase English alphabets, determine if P is present in S as a substring.
Input:
The first line contains an integer T, the number of t...read more
Ans. 
The task is to determine if a given substring is present in a given string.
• Iterate through the string S and check if each substring of length equal to the length of P matches P.

• Use string comparison to check for equality between substrings.

• Return 'YES' if a match is found, otherwise return 'NO'.
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Round duration - 60 minutes
Round difficulty - Easy

It was the MR( Managerial Round). It had questions regarding the major projects, internships and basics of computer network.

Q1. Can you describe how a website sends data to a server?
Ans. 
A website sends data to a server through HTTP requests, which include the data in the request body or parameters.
• When a user interacts with a website (e.g. submits a form), the website sends an HTTP request to the server.

• The data can be sent in the request body (e.g. JSON or XML) or as parameters in the URL.

• The server processes the request, retrieves the data, and sends a response back to the website.

• Examples of data s...read more
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Round duration - 30 minutes
Round difficulty - Easy

It was the Last round. The HR round

Round duration - 60 Minutes
Round difficulty - Medium

25 MCQs+ 1 Coding Question

Computer Networking+ OOPS+ DBMS+ Data Structures+ Output Based

Q1. 
Minimum Cost Path Problem Statement
Given an N x M matrix filled with integers, determine the minimum sum obtainable from a path that starts at a specified cell (x, y) and ends at the top left corner of t...read more
Ans. 
The problem involves finding the minimum sum path from a specified cell to the top left corner of a matrix.
• Start from the specified cell and calculate the minimum sum path to reach the top left corner of the matrix.

• You can move down, right, or diagonally down right from any cell.

• Keep track of the minimum sum obtained at each cell to determine the overall minimum sum path.

• Example: For the input matrix 4 8 2, 2 5 7, 6 1 ...read more
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