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Cisco Data Engineer Interview Questions and Answers
6 Interview questions
To build a pipeline for a Machine learning project, you need to collect data, preprocess it, train the model, evaluate its performance, and deploy it.
Collect relevant data from various sources
Preprocess the data by cleaning, transforming, and normalizing it
Split the data into training and testing sets
Train the machine learning model using the training data
Evaluate the model's performance using the testing data
Fine...
Performance of a model can be measured using various metrics such as accuracy, precision, recall, F1 score, ROC curve, and confusion matrix.
Use accuracy to measure the overall correctness of the model's predictions.
Precision measures the proportion of true positive predictions out of all positive predictions.
Recall measures the proportion of true positive predictions out of all actual positives.
F1 score is the har...
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 ...
This question asks for finding the maximum number of vaccines administered on a specific day during a vaccination drive, given the total number of days, total number of vaccines available, and the day number.
Read the number of test cases
For each test case, read the number of days, day number, and total number of vaccines available
Implement a logic to find the maximum number of vaccines administered on the given da...
Next Greater Number Problem Statement
Given a string S which represents a number, determine the smallest number strictly greater than the original number composed of the same digits. Each digit's frequency...
The task is to find the smallest number greater than the given number, with the same set of digits.
Iterate through the digits of the given number from right to left.
Find the first digit that is smaller than the digit to its right.
Swap this digit with the smallest digit to its right that is greater than it.
Sort the digits to the right of the swapped digit in ascending order.
If no such digit is found, return -1.
Problem: Search In Rotated Sorted Array
Given a sorted array that has been rotated clockwise by an unknown amount, you need to answer Q queries. Each query is represented by an integer Q[i], and you must d...
This is a problem where we need to search for a given number in a rotated sorted array.
The array is sorted and then rotated, so we can use binary search to find the number.
We can find the pivot point where the rotation happened and then perform binary search on the appropriate half of the array.
To find the pivot point, we can use a modified binary search algorithm.
Once we find the pivot point, we can determine whi...
Optimal Strategy for a Coin Game
You are playing a coin game with your friend Ninjax. There are N coins placed in a straight line.
Here are the rules of the game:
1. Each coin has a value associated with...The task is to find the maximum amount you can definitely win in a game of coins against an opponent who plays optimally.
The game is played with alternating turns, and each player can pick the first or last coin from the line.
The value associated with the picked coin adds up to the total amount the player wins.
To maximize your winnings, you need to consider all possible combinations of coin picks.
Use dynamic progr...
Cisco Data Engineer Interview Experiences
3 interviews found
Pradeep Yogesh
(1 Question)
- Q1. Asked about projects
DAVID UGOCHUKWU
Selected
I applied via Recruitment Consulltant and was interviewed before Jul 2023. There was 1 interview round.
(2 Questions)
- Q1. How would you build a pipeline for a Machine learning project?
- Ans.
To build a pipeline for a Machine learning project, you need to collect data, preprocess it, train the model, evaluate its performance, and deploy it.
Collect relevant data from various sources
Preprocess the data by cleaning, transforming, and normalizing it
Split the data into training and testing sets
Train the machine learning model using the training data
Evaluate the model's performance using the testing data
Fine-tune...
- Q2. How do you measure the performance of a model?
- Ans.
Performance of a model can be measured using various metrics such as accuracy, precision, recall, F1 score, ROC curve, and confusion matrix.
Use accuracy to measure the overall correctness of the model's predictions.
Precision measures the proportion of true positive predictions out of all positive predictions.
Recall measures the proportion of true positive predictions out of all actual positives.
F1 score is the harmonic...
Skills evaluated in this interview
Anonymous
I appeared for an interview in Jan 2022.
(1 Question)
Round duration - 90 minutes
Round difficulty - Medium
It had 14 MCQ questions and one coding question.
- Q1.
Optimal Strategy for a Coin Game
You are playing a coin game with your friend Ninjax. There are
Ncoins placed in a straight line.Here are the rules of the game:
1. Each coin has a value associated wit... - Ans.
The task is to find the maximum amount you can definitely win in a game of coins against an opponent who plays optimally.
The game is played with alternating turns, and each player can pick the first or last coin from the line.
The value associated with the picked coin adds up to the total amount the player wins.
To maximize your winnings, you need to consider all possible combinations of coin picks.
Use dynamic programmin...
(2 Questions)
Round duration - 60 Minutes
Round difficulty - Medium
It started with introduction , discussion of some projects I did (in depth)
After as i have Machine Learning in my resume , asked some questions regrading data quality , how to improve it . What is considered as bad data
Then 2 DSA questions
3-4 SQL queries : nth largest salary , JOINS, etc
- Q1.
Problem: Search In Rotated Sorted Array
Given a sorted array that has been rotated clockwise by an unknown amount, you need to answer
Qqueries. Each query is represented by an integerQ[i], and you must ... - Ans.
This is a problem where we need to search for a given number in a rotated sorted array.
The array is sorted and then rotated, so we can use binary search to find the number.
We can find the pivot point where the rotation happened and then perform binary search on the appropriate half of the array.
To find the pivot point, we can use a modified binary search algorithm.
Once we find the pivot point, we can determine which ha...
- Q2.
Next Greater Number Problem Statement
Given a string
Swhich represents a number, determine the smallest number strictly greater than the original number composed of the same digits. Each digit's frequenc... - Ans.
The task is to find the smallest number greater than the given number, with the same set of digits.
Iterate through the digits of the given number from right to left.
Find the first digit that is smaller than the digit to its right.
Swap this digit with the smallest digit to its right that is greater than it.
Sort the digits to the right of the swapped digit in ascending order.
If no such digit is found, return -1.
(1 Question)
Round duration - 60 Minutes
Round difficulty - Easy
It was the managerial round
Started from projects , tech stack used , SQL query , Joins, Normalization
and simple discussion of space and time after coding binary search both iterative and recursive
- 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...
- Ans.
This question asks for finding the maximum number of vaccines administered on a specific day during a vaccination drive, given the total number of days, total number of vaccines available, and the day number.
Read the number of test cases
For each test case, read the number of days, day number, and total number of vaccines available
Implement a logic to find the maximum number of vaccines administered on the given day num...
Interview Preparation Tips
Tip 1 : Practice on leetcode ( numbers are not important but you should be able to the approach where its required and that comes with practice)
Tip 2 : Be Clear with your projects, your role. (They really go in depth with projects and internships)
Tip 3 : Do look into the job role and have an idea about the job role and what is expected, (this shows that you are interested in the role)
Tip 1 : Don't make it too fancy as sometime , resume parse wont be parsing your resume correctly that may lead to rejection.
Tip 2 : Don't lie about anything in resume, its a red flag. You should be able to justify everything that is there in the resume.
Tip 3 : Highlight things that you want to showcase . coding profiles , project, tech stack, achievement
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
Interview Questionnaire
3 Questions
- Q1. Why do you want to join this company?
- Ans.
I am excited to join this company because of its reputation for innovation and commitment to employee growth.
I am impressed by the company's track record of developing cutting-edge software solutions.
I appreciate the emphasis on professional development and growth opportunities for employees.
I am excited about the prospect of working with a talented and dedicated team.
I believe that this company's values align with my ...
- Q2. Who is your role model?
- Ans.
My role model is Elon Musk.
I admire his innovative thinking and determination to push boundaries.
His ability to lead multiple successful companies is inspiring.
His focus on sustainable energy and space exploration aligns with my values.
I strive to emulate his work ethic and passion for making a positive impact on the world.
- Q3. What extra-curricular activities have you been involved in?
- Ans.
I have been involved in various extra-curricular activities such as volunteering, sports, and music.
Volunteered at local animal shelter
Played on intramural basketball team
Participated in school choir
Attended coding workshops and hackathons
Interview Preparation Tips
Experience: I consulted my seniors for preparation of my resume. I believe that seniors provide the best possible insights in this regards. I had a standard resume for all the companies.
Round: Test
Experience: I had prepared for the CAT examination which helped me in these written tests. The first round was the written test. The criterion for the written test was to have a CGPA more than 6.0. There was an aptitude test and a technical test. The technical test consisted of programming questions based on C++ and data structures. From data structures they asked a lot questions based on tree traversals and from C++. A large number of questions from pointers and arrays were also asked.
The aptitude test was slightly easier than the CAT examination standards. Majority of the questions were related to data interpretation and some were of based on logical reasoning. The total duration of the both the tests combined was 90 minutes.
Around 50 people appeared for the first round and nearly 13 got shortlisted for the next round.
Tips: For the written tests, particularly the aptitude section, if would really help if you have prepared for the CAT examination. There is a book written by an author named R.S. Agarwal which would prove to be beneficial from the point of view of these written tests.
Duration: 90 minutes
Round: Group Discussion
Experience: I did not prepare much for the GD’s. However I did keep myself abreast with certain latest happenings.There were no group activities conducted in the recruitment process of Century Link.
Round: HR Interview
Experience: For HR interviews I prepared answers to some frequently asked HR questions. I found these questions on the internet. Generally the questions asked in the interviews are related to the profile on offer; for instance in A2Z interview I was asked a lot of questions from power systems since it was a core company and in Century Links I was asked questions from C++ and data structures since they had come to recruit for a software engineering profile.
Round: Technical Interview
Experience: In this interview I was questioned on my C++ and data structure knowledge. They asked me questions on pointers and further asked me to explain the concept of dangling pointers. They did not want me to write down the complete code with proper syntax's of the problems asked to me. They only asked me to write the algorithms of the various problems.
They also asked me some puzzles. Unfortunately, I was not able to solve any of them. During the course of the interview they asked me to specify the reason for my keen interest in joining an IT company.
At the end of first interview some candidates were shortlisted and called for the second round of interview.
Round: Technical Interview
Experience: The second interview was conducted by a senior company official. He enquired about my project and again, like in the first interview, asked me to state the reason for my interest in joining an IT company.This interview round was an elimination round.
Round: HR Interview
Experience: The interview was an HR interview. Candidates who reached till this interview were all selected; basically this interview was like a formality to check the candidate’s fit with the company.
College Name: IIT ROORKEE
Motivation: I had never heard of the company before the recruitment season. I attended the PPT organised by the company, I found the company to be a well reputed/established company and thus applied to it. The profile was open for Electrical, Computer Science, Mechanical and Electronics engineering students.
Karthik C
Interview Preparation Tips
Experience: Was accepted through the pre placement offer after a satisfactory internship during the summer.
There was a small test after the internship. Work done in the internship in co-ordination with mentor, employees and manager has more weight-age.
General Tips: Just brush up on your fundamentals. The questions asked will just be a direct or indirect applications of what you have learnt. Good programming practice is also needed.
Good knowledge about Operating systems, Data structures, Networking and Programming is what they generally look for while hiring.
A good internship project helped in securing the PPO.
Skills:
College Name: NIT Surathkal
I applied via Campus Placement and was interviewed in Dec 2016. There were 3 interview rounds.
Interview Questionnaire
10 Questions
- Q1. Write a program to reverse a n integer
- Ans.
Program to reverse an integer
Convert the integer to a string
Reverse the string
Convert the reversed string back to an integer
- Q2. Explain me about your projects
- Ans.
I have worked on various projects including a web application for inventory management and a mobile app for task tracking.
Developed a web application using React for inventory management, allowing users to track stock levels and generate reports.
Created a mobile app using Flutter for task tracking, enabling users to create, assign, and track tasks in real-time.
Collaborated with a team of developers to integrate APIs an...
- Q3. Are you interstedoing in studying further
- Ans.
Yes, I am interested in studying further to enhance my skills and knowledge in software engineering.
Interested in pursuing a Master's degree in Computer Science
Enrolling in online courses to learn new technologies and programming languages
Attending workshops and conferences to stay updated with industry trends
- Q4. Reverse a linked list without using extra memory
- Ans.
Reverse a linked list without using extra memory
Iterate through the linked list and change the next pointers to reverse the list
Use three pointers - prev, current, and next - to keep track of the reversed list
Start with prev and current pointing to null and the head of the linked list respectively
While traversing the list, update the next pointer of the current node to point to the previous node
Move prev and current po...
- Q5. Explain me about all the data structures you know, tell me their advantages over others and applications
- Ans.
Data structures are fundamental concepts in software engineering that organize and store data efficiently.
Arrays: Simple and efficient for storing and accessing elements.
Linked Lists: Dynamic and flexible, efficient for insertion and deletion.
Stacks: LIFO structure, useful for managing function calls and undo operations.
Queues: FIFO structure, ideal for managing tasks and scheduling.
Trees: Hierarchical structure, used ...
- Q6. What is the difference between into arr [5] and malloc (5*sizeof (int))
- Ans.
The difference is that 'int arr[5]' creates an array on the stack, while 'malloc(5*sizeof(int))' allocates memory on the heap.
int arr[5] creates an array of 5 integers on the stack, which is a fixed-size memory allocation.
malloc(5*sizeof(int)) dynamically allocates memory on the heap, allowing for variable-size memory allocation.
The memory allocated with malloc must be explicitly freed with free() to avoid memory leaks...
- Q7. Tell me about yourself.
- Ans.
I am a passionate software engineer with a strong background in computer science and experience in developing innovative solutions.
Completed a Bachelor's degree in Computer Science from XYZ University
Proficient in programming languages such as Java, Python, and C++
Worked on various projects including a mobile app for tracking fitness goals
Familiar with Agile development methodologies and version control systems like Gi...
- Q8. Where do you want to see yourself in 5 years
- Ans.
In 5 years, I see myself as a senior software engineer leading a team of developers on innovative projects.
Continuing to enhance my technical skills and knowledge through ongoing learning and certifications
Taking on more leadership responsibilities and mentoring junior team members
Contributing to the development of cutting-edge software solutions for the company
Possibly pursuing opportunities for advancement within the...
- Q9. Mention two weakness es
- Ans.
I tend to overthink details and can be overly critical of my own work.
Overthinking details can lead to delays in completing tasks
Being overly critical can hinder progress and confidence
- Q10. Are you intersted in studying further
- Ans.
Yes, I am interested in studying further to enhance my skills and stay updated with the latest technologies.
I believe continuous learning is essential in the fast-paced tech industry
Further studies can help me specialize in a specific area of software engineering
Advanced degrees or certifications can open up new career opportunities
Interview Preparation Tips
Experience: Asked me few simple questions related to OS and Network security
Round: Technical Interview
Experience: Asked me few simple questions related to OS and Network security
College Name: IIT Madras
Skills evaluated in this interview
I appeared for an interview before Mar 2021.
(3 Questions)
Round duration - 40 minutes
Round difficulty - Easy
Technical round with questions based on DSA.
- Q1.
Reverse a Number Problem Statement
Create a program to reverse a given integer
N. The output should be the reversed integer.Note:
If a number has trailing zeros, their reversed version should not inclu...
- Ans.
Reverse a given integer while excluding trailing zeros.
Create a program to reverse the given integer by converting it to a string and then reversing it.
Remove any trailing zeros from the reversed string before converting it back to an integer.
Handle the constraints of the input integer being between 0 and 10^8.
Example: For input 1230, the output should be 321.
- Q2.
Reverse a Linked List Problem Statement
You are given a Singly Linked List of integers. Your task is to reverse the Linked List by changing the links between nodes.
Input:
The first line of input contai... - Ans.
Reverse a given singly linked list by changing the links between nodes.
Iterate through the linked list and reverse the links between nodes.
Use three pointers to keep track of the current, previous, and next nodes.
Update the links while traversing the list to reverse it.
Return the head of the reversed linked list.
- Q3. What is the difference in C++ between 'new int[5]' and 'malloc(5 * sizeof(int))'?
- Ans.
new int[5] is C++ specific and initializes the array with default values, while malloc(5 * sizeof(int)) is a C function and does not initialize the array.
new int[5] is C++ specific and calls constructors for each element in the array.
malloc(5 * sizeof(int)) is a C function and does not call constructors, leaving the array uninitialized.
new int[5] returns a pointer to the first element of the array, while malloc(5 * siz...
Interview Preparation Tips
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
Skills evaluated in this interview
I applied via Approached by Company and was interviewed before Sep 2021. There were 4 interview rounds.
Coding test realted to c or cpp will be taken.
(1 Question)
- Q1. Technical question realted to 4G and 5G NR will be asked.
(1 Question)
- Q1. Technical 2 round questions realted to programming language you need to write and explain.
(1 Question)
- Q1. About youself and then salary discussion
Interview Preparation Tips
I appeared for an interview in Aug 2021.
Interview Questionnaire
1 Question
- Q1. First few minutes to understand what each of us is doing. Then After evaluating basics/syntax of Golang I was asked to write an efficient algorithm to implement LRU cache
Interview Preparation Tips
C,C++,Linux internals,Networking
(1 Question)
- Q1. Data Structure, Algorithm,
(1 Question)
- Q1. More on DS and Linux internals
(1 Question)
- Q1. Salary expectation and some normal questions
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Overall Interview Experience Rating
based on 2 interview experiences
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Cisco Data Engineer Reviews and Ratings
based on 3 reviews
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