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Cisco Interview Questions and Answers

Updated 9 Jul 2025
Popular Designations

323 Interview questions

A Software Engineer was asked 8mo ago
Q. Given an integer array nums, find the contiguous subarray (containing at least one number) which has the largest sum and return its sum.
Ans. 

Find the contiguous subarray with the maximum sum in a given array of integers.

  • Use Kadane's algorithm for an efficient O(n) solution.

  • Initialize two variables: max_sum and current_sum.

  • Iterate through the array, updating current_sum and max_sum.

  • Example: For array [-2,1,-3,4,-1,2,1,-5,4], max sum is 6 (subarray [4,-1,2,1]).

  • If all numbers are negative, return the largest single element.

View all Software Engineer interview questions
A Software Engineer was asked 9mo ago
Q. Given an array, find the next greater element (NGE) for every element. The Next greater element for an element x is the first greater element on the right side of x in the array. Elements for which no great...
Ans. 

Using stack to find the next greater element in an array

  • Create an empty stack to store indices of elements

  • Iterate through the array from right to left

  • Pop elements from stack until a greater element is found or stack is empty

View all Software Engineer interview questions
A Software Engineer was asked 9mo ago
Q. Design a multi-user job scheduler.
Ans. 

A multi user job scheduler allows multiple users to schedule and manage their tasks efficiently.

  • Implement a centralized job scheduling system that can handle multiple users and their tasks simultaneously

  • Include features such as task prioritization, deadline management, and resource allocation

  • Use a database to store user information, task details, and scheduling algorithms

  • Provide a user-friendly interface for users...

View all Software Engineer interview questions
A Data Scientist was asked 9mo ago
Q. What tools have you worked with previously?
Ans. 

I have worked with tools such as Python, R, SQL, Tableau, and Excel for data analysis and visualization.

  • Python

  • R

  • SQL

  • Tableau

  • Excel

View all Data Scientist interview questions
A Data Scientist was asked 9mo ago
Q. When would you use a t-test?
Ans. 

T test is used to determine if there is a significant difference between the means of two groups.

  • Use t test when comparing means of two groups to determine if there is a significant difference.

  • Commonly used in hypothesis testing to assess if there is a statistically significant difference between groups.

  • Example: Comparing the average test scores of students who received tutoring versus those who did not.

  • Example: T...

View all Data Scientist interview questions
A Data Scientist was asked 9mo ago
Q. What is a p-value?
Ans. 

P value is a statistical measure that helps determine the significance of results in hypothesis testing.

  • P value is the probability of obtaining results as extreme as the observed results, assuming the null hypothesis is true.

  • A small p value (typically ≤ 0.05) indicates strong evidence against the null hypothesis, leading to its rejection.

  • Conversely, a large p value (> 0.05) suggests weak evidence against the null ...

View all Data Scientist interview questions

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?
A Software Developer was asked 10mo ago
Q. Write a program to convert a 24-hour time input into AM/PM format.
Ans. 

Program to convert 24hr input into AM-PM formatted output

  • Create a function that takes a 24-hour time input as a string

  • Use the datetime module in Python to convert the input to a datetime object

  • Format the datetime object to display in AM-PM format

  • Return the formatted time as a string

View all Software Developer interview questions
Are these interview questions helpful?
A Summer Intern was asked 10mo ago
Q. Nodal moving using heap at min cost
Ans. 

Nodal moving using heap at min cost involves finding the shortest path between nodes using a heap data structure.

  • Use Dijkstra's algorithm to find the shortest path between nodes in a graph.

  • Implement a min heap to efficiently store and retrieve nodes based on their cost.

  • Update the cost of nodes in the heap as you explore the graph to find the minimum cost path.

  • Example: Find the shortest path between two cities in a...

View all Summer Intern interview questions
A Data Scientist was asked 10mo ago
Q. How do you select the appropriate learning algorithm for a problem?
Ans. 

Selecting the appropriate learning algorithm involves considering the problem's characteristics and requirements.

  • Understand the problem's nature, such as classification, regression, clustering, etc.

  • Consider the size of the dataset and the computational resources available.

  • Evaluate the complexity of the relationships within the data.

  • Experiment with different algorithms and compare their performance using metrics li...

View all Data Scientist interview questions
A Data Scientist was asked 10mo ago
Q. Explain the K-Means algorithm.
Ans. 

K-Means is a clustering algorithm that partitions data into K clusters based on similarity.

  • Divides data points into K clusters based on distance from centroid

  • Iteratively updates centroids to minimize within-cluster variance

  • Requires specifying number of clusters K beforehand

  • Example: Grouping customers based on purchasing behavior

View all Data Scientist interview questions

Cisco Interview Experiences

387 interviews found

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

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

  • Q1. Inheritance in Java allows a class (subclass) to inherit properties and methods from another class (superclass). This promotes code reusability and establishes a hierarchical relationship between classes. ...
  • Ans. 

    Inheritance in Java enables code reusability and establishes class hierarchies.

    • Single Inheritance: Class Dog inherits from class Animal.

    • Multilevel Inheritance: Class Puppy inherits from Dog, which inherits from Animal.

    • Hierarchical Inheritance: Classes Dog and Cat both inherit from Animal.

    • Multiple Inheritance (through interfaces): Class implements interfaces Runnable and Comparable.

    • Hybrid Inheritance: A class inherits f...

  • Answered by AI
  • Q2. Structured Data: Organization: Follows a predefined schema, often stored in relational databases with rows and columns. Examples: Employee tables in databases, banking transaction data, website-related dat...
Interview experience
3
Average
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Not Selected
Round 1 - Aptitude Test 

Fifty multiple-choice questions on C programming, some networking topics, and role-related inquiries.

Round 2 - Technical 

(2 Questions)

  • Q1. After clearing the first round, there are two additional rounds on the same day: Technical Round (TR) and Managerial Round (MR). The TR begins at 8:30 AM and lasts approximately 50 to 55 minutes. During th...
  • Ans. 

    Interview experience was easy, but failure in TR raises questions about performance and preparation.

    • Review your internship and projects thoroughly; be prepared to discuss specific challenges and solutions.

    • Practice common technical questions, especially in backend and frontend integration.

    • Brush up on computer networks; ensure you understand key concepts and can explain them clearly.

    • SQL queries should be practiced; know ...

  • Answered by AI
  • Q2. Resume : All things . Networking : Gateway , Lookup address , IP and types , Firewalls and types , Routers SQL : Update , Insert , alter , count ......joins , left vs right , normalization
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Job Portal and was interviewed in Dec 2024. There were 4 interview rounds.

Round 1 - Aptitude Test 

Topics - mcq of algorithms, networking, dbms

Round 2 - Technical 

(2 Questions)

  • Q1. Based on resume
  • Ans. 

    I have a diverse background in project management and technical skills, enhancing my ability to contribute effectively as an apprentice.

    • Managed a team project in college, leading to a successful presentation that received top marks.

    • Completed an internship where I developed a web application, improving my coding skills and understanding of user experience.

    • Participated in workshops on communication and teamwork, which he...

  • Answered by AI
  • Q2. Questions on linked list, tree,
Round 3 - Behavioral 

(2 Questions)

  • Q1. About how you approach a problem
  • Ans. 

    I approach problems systematically, breaking them down into manageable parts and analyzing each component for effective solutions.

    • Identify the problem clearly: For example, if a project is behind schedule, determine the specific reasons for the delay.

    • Gather relevant information: Research similar cases or consult with team members to understand different perspectives.

    • Break the problem into smaller parts: If facing a com...

  • Answered by AI
  • Q2. Managerial questions on situations
Round 4 - HR 

(1 Question)

  • Q1. Basic hr questions
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Aptitude Test 

It is a very Easy Aptitude test, with only general questions

Round 2 - Technical 

(2 Questions)

  • Q1. Technical general questions were asked
  • Q2. Basic questions about the position you've applied for
Round 3 - One-on-one 

(3 Questions)

  • Q1. Technical interview - Regarding the position you've applied for.
  • Q2. Managerial interview - Normal conversation easy to crack
  • Q3. Hr Interview - General questions about relocation, salary and queries you have if any.
Interview experience
3
Average
Difficulty level
Hard
Process Duration
Less than 2 weeks
Result
Selected Selected

I appeared for an interview in Jan 2025.

Round 1 - Technical 

(2 Questions)

  • Q1. Technical discussion
  • Q2. One-to-one round , technical discussion
Round 2 - HR 

(1 Question)

  • Q1. HR Round, salary

Interview Questions & Answers

user image Anonymous

posted on 21 Feb 2025

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I appeared for an interview in Aug 2024.

Round 1 - Coding Test 

Online assessments consisting of Linked list , stacks , string manipulations with medium difficulty for string manipulation and easy traversal for linked lists.

Round 2 - Technical 

(3 Questions)

  • Q1. Write code for rate limiter in python or any language? If don't know rate limiter , then they will explain the logic but needs to be alligned with rate limiting logic.
  • Ans. 

    Rate limiter code implementation in Python

    • Use a dictionary to store the timestamps of each request

    • Check the dictionary to see if the request should be allowed based on the rate limit

    • Update the dictionary with the current timestamp for each request

  • Answered by AI
  • Q2. Check the logic of your code , if you find any limitations.
  • Ans. 

    Check code logic for limitations

    • Review code for potential edge cases

    • Test code with different inputs to identify any issues

    • Consider scalability and performance implications of code

    • Ensure error handling is robust and comprehensive

  • Answered by AI
  • Q3. Managerial and Technical Round 3 with same set of questions as above.
Round 3 - Technical 

(2 Questions)

  • Q1. Kubernetes pods , deployments , replicas , deamon sets , aws services and experience in mitigating issues in devops.
  • Q2. Explain full pipeline which you worked from Code Integration to deployment and security check. What all python library used , have you used flask and other libraries for request and response.
  • Ans. 

    I have experience working on full pipeline from code integration to deployment with security checks. Used Flask and other Python libraries for request and response handling.

    • Used Git for version control and continuous integration tools like Jenkins for automated builds

    • Utilized Docker for containerization and Kubernetes for orchestration

    • Implemented security checks using tools like SonarQube and OWASP ZAP

    • Used Flask for bu...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Get ready for python in Flask , request response concepts to write full code.

Associate Engineer Interview Questions & Answers

user image Radheshyam Dhote

posted on 2 Jan 2025

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Write a code for Fibonacci series?

Round 2 - Technical 

(1 Question)

  • Q1. What is aws and explain how you deployed your project.
  • Ans. 

    AWS is a cloud computing platform that offers a wide range of services for storage, computing, networking, databases, and more.

    • AWS stands for Amazon Web Services

    • I deployed my project on AWS using services like EC2 for virtual servers, S3 for storage, and RDS for databases

    • I used AWS Elastic Beanstalk for easy deployment and scaling of my application

    • I configured security groups and IAM roles to ensure secure access to my...

  • Answered by AI
Round 3 - Technical 

(1 Question)

  • Q1. What is AI, explain its application
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Development topics: LWC related questions, trigger, batch apex, governor limits, future method
  • Q2. Admin Topics: Flow, price rules, product rules, some scenario based questions
Round 2 - Technical 

(2 Questions)

  • Q1. LWC, Aura, Test Class, Best Practice - trigger, Decorators, Error Handling
  • Q2. Rest API, Deployments, Some scenario based questions
Round 3 - One-on-one 

(1 Question)

  • Q1. Managerial Round: Intro & Scenario based questions

Apprentice Interview Questions & Answers

user image Anonymous

posted on 13 Jan 2025

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Instagram and was interviewed in Jul 2024. There were 3 interview rounds.

Round 1 - Technical 

(2 Questions)

  • Q1. It's all from your Resume only Basic coding questions
  • Q2. Be Honest in resume Many technical questions It's about 30 to 40 mins Be confident Show you are enthusiastic and willingness to learn
  • Ans. 

    Honesty in resumes builds trust; showcase skills and eagerness to learn during technical interviews.

    • Be truthful about your skills; exaggeration can lead to issues later.

    • Highlight relevant projects; for example, discuss a coding project you completed.

    • Express enthusiasm; share what excites you about the role or company.

    • Demonstrate willingness to learn; mention online courses or certifications you've pursued.

  • Answered by AI
Round 2 - Behavioral 

(3 Questions)

  • Q1. Its all about your understanding of technologies Your opinions with clarity
  • Ans. 

    Understanding technology is crucial for innovation, efficiency, and problem-solving in various fields.

    • Technology enhances communication; for example, social media platforms connect people globally.

    • Automation improves efficiency; consider how robots in manufacturing speed up production.

    • Data analytics drives decision-making; businesses use tools like Google Analytics to understand customer behavior.

    • Artificial Intelligenc...

  • Answered by AI
  • Q2. Be active and give full pledged answers with crystal clear explanation Otherwise they will not move forward
  • Q3. Being confident is only the thing
Round 3 - HR 

(3 Questions)

  • Q1. Explain about yourself
  • Ans. 

    I am a highly motivated and detail-oriented individual with a strong background in project management and team leadership.

    • Experienced in project management and team leadership

    • Detail-oriented and highly motivated

    • Strong communication and interpersonal skills

  • Answered by AI
  • Q2. The HR explain the role package and everything
  • Q3. This is also elimination round.Being active is enough
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I appeared for an interview in Aug 2024.

Round 1 - Aptitude Test 

Code-with-cisco having coding questions and mcq

Round 2 - Technical 

(2 Questions)

  • Q1. Different scheduling algorithms in OS?
  • Ans. 

    Different scheduling algorithms in OS determine how tasks are prioritized and executed.

    • First-Come, First-Served (FCFS)

    • Shortest Job Next (SJN)

    • Round Robin (RR)

    • Priority Scheduling

    • Multi-Level Queue Scheduling

  • Answered by AI
  • Q2. Resume go-through: projects and intern
Round 3 - Technical 

(2 Questions)

  • Q1. Networking: Transfer packet from one device to another
  • Q2. Contact dictionary- data structure used and time complexity
  • Ans. 

    Contact dictionary can be implemented using hash table for fast lookups with O(1) time complexity.

    • Use a hash table to store contacts with keys as names and values as contact information.

    • Example: { 'John Doe': '555-1234', 'Jane Smith': '555-5678' }

    • Time complexity for searching, inserting, and deleting contacts is O(1) with a hash table.

  • Answered by AI
Round 4 - HR 

(2 Questions)

  • Q1. Basic networking
  • Q2. Why cisco, what is cisco?
  • Ans. 

    Cisco is a multinational technology conglomerate known for networking hardware, software, and services.

    • Cisco is a leading provider of networking equipment and solutions.

    • They offer a wide range of products including routers, switches, and security devices.

    • Cisco also provides software solutions for network management and security.

    • The company offers services such as consulting, technical support, and training.

    • Cisco is kno...

  • Answered by AI

Skills evaluated in this interview

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Interview Hub
6d (edited)
anshitanegi
·
ex -
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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Cisco Interview FAQs

How many rounds are there in Cisco interview?
Cisco interview process usually has 2-3 rounds. The most common rounds in the Cisco interview process are Technical, Coding Test and One-on-one Round.
How to prepare for Cisco interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at Cisco. The most common topics and skills that interviewers at Cisco expect are Cisco, Python, Computer Networking, Debugging and Linux Administration.
What are the top questions asked in Cisco interview?

Some of the top questions asked at the Cisco interview -

  1. ONE PUZZLE THAT I REMEMBERED. At the local model boat club, four friends were t...read more
  2. Inheritance in Java allows a class (subclass) to inherit properties and methods...read more
  3. 1.Two routers are connected,Ospf is enabled but link is down, what are the spec...read more
What are the most common questions asked in Cisco HR round?

The most common HR questions asked in Cisco interview are -

  1. What are your salary expectatio...read more
  2. Why should we hire y...read more
  3. Share details of your previous j...read more
How long is the Cisco interview process?

The duration of Cisco interview process can vary, but typically it takes about less than 2 weeks to complete.

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Overall Interview Experience Rating

4.4/5

based on 287 interview experiences

Difficulty level

Easy 15%
Moderate 77%
Hard 8%

Duration

Less than 2 weeks 61%
2-4 weeks 27%
4-6 weeks 9%
6-8 weeks 2%
More than 8 weeks 1%
View more

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