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Cisco Senior Sdet Engineer Interview Questions and Answers

Updated 17 Apr 2025

Cisco Senior Sdet Engineer Interview Experiences

1 interview found

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
-
Result
-

I appeared for an interview in Mar 2025, where I was asked the following questions.

  • Q1. Python some tuple and list related questions
  • Q2. Have to formate the string url
  • Ans. 

    Formatting a URL involves structuring it correctly for web access, ensuring it adheres to standards and is user-friendly.

    • Use 'https://' for secure connections. Example: 'https://www.example.com'.

    • Ensure proper encoding of special characters. Example: 'Hello World' becomes 'Hello%20World'.

    • Maintain a clear structure: scheme, host, path, and query parameters. Example: 'https://www.example.com/path?query=value'.

    • Avoid unnece...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - i have given the first rounf no feedback i got

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anshitanegi
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Planet Spark
When HR’s Chinese English made me drop the interview!
So, I talked to the HR yesterday about the interview. I asked Please send me the location But their English… bro I was shocked! It was like talking to someone jisne english nahi kuch ar hi seekh liya ho, if the HR’s English is this I can only imagine the rest of the company I decided to drop the interview with this chinese english😶‍🌫️
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Interview Questionnaire 

3 Questions

  • Q1. Why do you want to join this company?
  • 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.

  • Answered by AI
  • 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

  • Answered by AI

Interview Preparation Tips

Round: Resume Shortlist
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.

Senior Sdet Engineer Interview Questions Asked at Other Companies

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Q3. Explain the project you worked on and which framework was used.
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Q4. Write the XPath of an element from amazon.in page manually, witho ... read more
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Q5. Write code to split a string into individual letters, each on a n ... read more

Interview Preparation Tips

Round: PRE placement
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

  • Answered by AI
  • 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...

  • Answered by AI
  • Q3. Are you interstedoing in studying further
  • Q4. Reverse a linked list without using extra memory
  • 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 ...

  • Answered by AI
  • 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...

  • Answered by AI
  • Q7. Tell me about yourself.
  • Q8. Where do you want to see yourself in 5 years
  • Q9. Mention two weakness es
  • Q10. Are you intersted in studying further

Interview Preparation Tips

Round: Technical Interview
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.

Round 1 - Face to Face 

(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.

  • Answered by AI
  • 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.

  • Answered by AI
  • 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...

  • Answered by AI

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPAJuniper Networks interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, OS, Networking, Aptitude, OOPSTime required to prepare for the interview - 4 monthsInterview preparation tips for other job seekers

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.

Application resume tips for other job seekers

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.

Final outcome of the interviewRejected

Skills evaluated in this interview

Round 1 - HR 

(1 Question)

  • Q1. Tell me about yourself.

Interview Preparation Tips

Interview preparation tips for other job seekers - All my friend's friends are you doing well come

Cisco HR Interview Questions

55 questions and answers

Q. Tell me about your previous experience.
Q. What are your goals?
Q. Why do you want to work in the networking industry?
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Recruitment Consulltant and was interviewed before Feb 2022. There were 2 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - Technical 

(2 Questions)

  • Q1. Basic javascript questions
  • Q2. Opps concepts of PHP

Interview Preparation Tips

Interview preparation tips for other job seekers - All questions are related to my past experience and projects
Are these interview questions helpful?

I applied via Approached by Company and was interviewed before Sep 2021. There were 4 interview rounds.

Round 1 - Coding Test 

Coding test realted to c or cpp will be taken.

Round 2 - Technical 

(1 Question)

  • Q1. Technical question realted to 4G and 5G NR will be asked.
Round 3 - Technical 

(1 Question)

  • Q1. Technical 2 round questions realted to programming language you need to write and explain.
Round 4 - HR 

(1 Question)

  • Q1. About youself and then salary discussion

Interview Preparation Tips

Interview preparation tips for other job seekers - Just Clear your concepts before attending the interviews.
Interview experience
3
Average
Difficulty level
Moderate
Process Duration
More than 8 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed in Aug 2023. There were 4 interview rounds.

Round 1 - Aptitude Test 

Generic dotnet questions mcq

Round 2 - One-on-one 

(1 Question)

  • Q1. .net, c# , sql , async questions
Round 3 - Coding Test 

One problem is given need to make logic and your current project details

Round 4 - Group Discussion 

Managerial round was taken at the end

Interview Preparation Tips

Interview preparation tips for other job seekers - They are very slow. They take really long time to release offer but want candidate to join immediately.

I applied via Approached by Company and was interviewed in Mar 2022. There were 4 interview rounds.

Round 1 - Aptitude Test 

Standard test

Round 2 - Coding Test 

Difficult problem to solve

Round 3 - HR 

(1 Question)

  • Q1. What are your strengths and weaknesses?
Round 4 - One-on-one 

(1 Question)

  • Q1. Manager discussion to understand career path

Interview Preparation Tips

Topics to prepare for Lumen Technologies Software Engineer interview:
  • Company Research
  • Telecom
  • technology
Interview preparation tips for other job seekers - Doing research about the company is helpful and ask questions about life at Lumen.

Cisco Interview FAQs

What are the top questions asked in Cisco Senior Sdet Engineer interview?

Some of the top questions asked at the Cisco Senior Sdet Engineer interview -

  1. have to formate the string ...read more
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Overall Interview Experience Rating

5/5

based on 1 interview experience

Difficulty level

Moderate 100%
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Cisco Senior Sdet Engineer Salary
based on 4 salaries
₹28.1 L/yr - ₹53.4 L/yr
52% more than the average Senior Sdet Engineer Salary in India
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